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libgo: add misc/cgo files 

Copy all the misc/cgo files from the gc toolchain into libgo/misc.
    
    These will be used for testing purposes by later changes to the
    gotools directory.
    
    Reviewed-on: https://go-review.googlesource.com/46721

From-SVN: r249674
This commit is contained in:
Ian Lance Taylor 2017-06-27 04:21:40 +00:00
parent 9913ef5866
commit 936615752a
270 changed files with 13744 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
gcc/go/gofrontend/MERGE
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@ -1,4 +1,4 @@
bfb18fb16194826bf2bf2d7af873719ddb5e8e42
040dc31406d580e33f82e578a840600fea5004ef
The first line of this file holds the git revision number of the last
merge done from the gofrontend repository.

22
libgo/merge.sh
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@ -182,6 +182,13 @@ done
done
done
(cd ${NEWDIR}/misc/cgo && find . -type f -print) | while read f; do
oldfile=${OLDDIR}/misc/cgo/$f
newfile=${NEWDIR}/misc/cgo/$f
libgofile=misc/cgo/$f
merge $f ${oldfile} ${newfile} ${libgofile}
done
(cd ${OLDDIR}/src && find . -name '*.go' -print) | while read f; do
oldfile=${OLDDIR}/src/$f
newfile=${NEWDIR}/src/$f
@ -197,5 +204,20 @@ done
git rm ${libgofile}
done
(cd ${OLDDIR}/misc/cgo && find . -type f -print) | while read f; do
oldfile=${OLDDIR}/misc/cgo/$f
newfile=${NEWDIR}/misc/cgo/$f
libgofile=misc/cgo/$f
if test -f ${newfile}; then
continue
fi
if ! test -f ${libgofile}; then
continue
fi
echo "merge.sh: ${libgofile}: REMOVED"
rm -f ${libgofile}
git rm ${libgofile}
done
(echo ${new_rev}; sed -ne '2,$p' MERGE) > MERGE.tmp
mv MERGE.tmp MERGE

18
libgo/misc/cgo/errors/err1.go Normal file
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@ -0,0 +1,18 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
/*
#cgo LDFLAGS: -c
void test() {
xxx; // ERROR HERE
}
*/
import "C"
func main() {
C.test()
}

13
libgo/misc/cgo/errors/err2.go Normal file
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@ -0,0 +1,13 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
import "C"
func main() {
s := ""
_ = s
C.malloc(s) // ERROR HERE
}

18
libgo/misc/cgo/errors/err3.go Normal file
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@ -0,0 +1,18 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
/*
typedef struct foo foo_t;
typedef struct bar bar_t;
foo_t *foop;
*/
import "C"
func main() {
x := (*C.bar_t)(nil)
C.foop = x // ERROR HERE
}

15
libgo/misc/cgo/errors/issue11097a.go Normal file
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@ -0,0 +1,15 @@
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
/*
//enum test { foo, bar };
*/
import "C"
func main() {
var a = C.enum_test(1) // ERROR HERE
_ = a
}

15
libgo/misc/cgo/errors/issue11097b.go Normal file
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@ -0,0 +1,15 @@
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
/*
//enum test { foo, bar };
*/
import "C"
func main() {
p := new(C.enum_test) // ERROR HERE
_ = p
}

14
libgo/misc/cgo/errors/issue13129.go Normal file
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@ -0,0 +1,14 @@
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// issue 13129: used to output error about C.unsignedshort with CC=clang
package main
import "C"
func main() {
var x C.ushort
x = int(0) // ERROR HERE
}

12
libgo/misc/cgo/errors/issue13423.go Normal file
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@ -0,0 +1,12 @@
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
// #include <stdio.h>
import "C"
func main() {
_ = C.fopen() // ERROR HERE
}

24
libgo/misc/cgo/errors/issue13635.go Normal file
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@ -0,0 +1,24 @@
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// issue 13635: used to output error about C.unsignedchar.
// This test tests all such types.
package pkg
import "C"
func main() {
var (
_ C.uchar = "uc" // ERROR HERE
_ C.schar = "sc" // ERROR HERE
_ C.ushort = "us" // ERROR HERE
_ C.uint = "ui" // ERROR HERE
_ C.ulong = "ul" // ERROR HERE
_ C.longlong = "ll" // ERROR HERE
_ C.ulonglong = "ull" // ERROR HERE
_ C.complexfloat = "cf" // ERROR HERE
_ C.complexdouble = "cd" // ERROR HERE
)
}

26
libgo/misc/cgo/errors/issue13830.go Normal file
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@ -0,0 +1,26 @@
// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// cgo converts C void* to Go unsafe.Pointer, so despite appearances C
// void** is Go *unsafe.Pointer. This test verifies that we detect the
// problem at build time.
package main
// typedef void v;
// void F(v** p) {}
import "C"
import "unsafe"
type v [0]byte
func f(p **v) {
C.F((**C.v)(unsafe.Pointer(p))) // ERROR HERE
}
func main() {
var p *v
f(&p)
}

23
libgo/misc/cgo/errors/issue14669.go Normal file
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@ -0,0 +1,23 @@
// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Issue 14669: test that fails when build with CGO_CFLAGS selecting
// optimization.
package p
/*
const int E = 1;
typedef struct s {
int c;
} s;
*/
import "C"
func F() {
_ = C.s{
c: C.E,
}
}

12
libgo/misc/cgo/errors/issue16116.go Normal file
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@ -0,0 +1,12 @@
// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
// void f(void *p, int x) {}
import "C"
func main() {
_ = C.f(1) // ERROR HERE
}

17
libgo/misc/cgo/errors/issue16591.go Normal file
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@ -0,0 +1,17 @@
// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Issue 16591: Test that we detect an invalid call that was being
// hidden by a type conversion inserted by cgo checking.
package p
// void f(int** p) { }
import "C"
type x *C.int
func F(p *x) {
C.f(p) // ERROR HERE
}

14
libgo/misc/cgo/errors/issue7757.go Normal file
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@ -0,0 +1,14 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
/*
void foo() {}
*/
import "C"
func main() {
C.foo = C.foo // ERROR HERE
}

17
libgo/misc/cgo/errors/issue8442.go Normal file
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@ -0,0 +1,17 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
// Issue 8442. Cgo output unhelpful error messages for
// invalid C preambles.
/*
void issue8442foo(UNDEF*); // ERROR HERE
*/
import "C"
func main() {
C.issue8442foo(nil)
}

34
libgo/misc/cgo/errors/malloc.go Normal file
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@ -0,0 +1,34 @@
// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Test that C.malloc does not return nil.
package main
// #include <stdlib.h>
import "C"
import (
"fmt"
"runtime"
)
func main() {
var size C.size_t
size--
// The Dragonfly libc succeeds when asked to allocate
// 0xffffffffffffffff bytes, so pass a different value that
// causes it to fail.
if runtime.GOOS == "dragonfly" {
size = C.size_t(0x7fffffff << (32 * (^uintptr(0) >> 63)))
}
p := C.malloc(size)
if p == nil {
fmt.Println("malloc: C.malloc returned nil")
// Just exit normally--the test script expects this
// program to crash, so exiting normally indicates failure.
}
}

576
libgo/misc/cgo/errors/ptr.go Normal file
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@ -0,0 +1,576 @@
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Tests that cgo detects invalid pointer passing at runtime.
package main
import (
"bufio"
"bytes"
"fmt"
"io"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
"runtime"
"strings"
"sync"
)
// ptrTest is the tests without the boilerplate.
type ptrTest struct {
name string // for reporting
c string // the cgo comment
imports []string // a list of imports
support string // supporting functions
body string // the body of the main function
extra []extra // extra files
fail bool // whether the test should fail
expensive bool // whether the test requires the expensive check
}
type extra struct {
name string
contents string
}
var ptrTests = []ptrTest{
{
// Passing a pointer to a struct that contains a Go pointer.
name: "ptr1",
c: `typedef struct s { int *p; } s; void f(s *ps) {}`,
body: `C.f(&C.s{new(C.int)})`,
fail: true,
},
{
// Passing a pointer to a struct that contains a Go pointer.
name: "ptr2",
c: `typedef struct s { int *p; } s; void f(s *ps) {}`,
body: `p := &C.s{new(C.int)}; C.f(p)`,
fail: true,
},
{
// Passing a pointer to an int field of a Go struct
// that (irrelevantly) contains a Go pointer.
name: "ok1",
c: `struct s { int i; int *p; }; void f(int *p) {}`,
body: `p := &C.struct_s{i: 0, p: new(C.int)}; C.f(&p.i)`,
fail: false,
},
{
// Passing a pointer to a pointer field of a Go struct.
name: "ptr-field",
c: `struct s { int i; int *p; }; void f(int **p) {}`,
body: `p := &C.struct_s{i: 0, p: new(C.int)}; C.f(&p.p)`,
fail: true,
},
{
// Passing a pointer to a pointer field of a Go
// struct, where the field does not contain a Go
// pointer, but another field (irrelevantly) does.
name: "ptr-field-ok",
c: `struct s { int *p1; int *p2; }; void f(int **p) {}`,
body: `p := &C.struct_s{p1: nil, p2: new(C.int)}; C.f(&p.p1)`,
fail: false,
},
{
// Passing the address of a slice with no Go pointers.
name: "slice-ok-1",
c: `void f(void **p) {}`,
imports: []string{"unsafe"},
body: `s := []unsafe.Pointer{nil}; C.f(&s[0])`,
fail: false,
},
{
// Passing the address of a slice with a Go pointer.
name: "slice-ptr-1",
c: `void f(void **p) {}`,
imports: []string{"unsafe"},
body: `i := 0; s := []unsafe.Pointer{unsafe.Pointer(&i)}; C.f(&s[0])`,
fail: true,
},
{
// Passing the address of a slice with a Go pointer,
// where we are passing the address of an element that
// is not a Go pointer.
name: "slice-ptr-2",
c: `void f(void **p) {}`,
imports: []string{"unsafe"},
body: `i := 0; s := []unsafe.Pointer{nil, unsafe.Pointer(&i)}; C.f(&s[0])`,
fail: true,
},
{
// Passing the address of a slice that is an element
// in a struct only looks at the slice.
name: "slice-ok-2",
c: `void f(void **p) {}`,
imports: []string{"unsafe"},
support: `type S struct { p *int; s []unsafe.Pointer }`,
body: `i := 0; p := &S{p:&i, s:[]unsafe.Pointer{nil}}; C.f(&p.s[0])`,
fail: false,
},
{
// Passing the address of a slice of an array that is
// an element in a struct, with a type conversion.
name: "slice-ok-3",
c: `void f(void* p) {}`,
imports: []string{"unsafe"},
support: `type S struct { p *int; a [4]byte }`,
body: `i := 0; p := &S{p:&i}; s := p.a[:]; C.f(unsafe.Pointer(&s[0]))`,
fail: false,
},
{
// Passing the address of a slice of an array that is
// an element in a struct, with a type conversion.
name: "slice-ok-4",
c: `typedef void* PV; void f(PV p) {}`,
imports: []string{"unsafe"},
support: `type S struct { p *int; a [4]byte }`,
body: `i := 0; p := &S{p:&i}; C.f(C.PV(unsafe.Pointer(&p.a[0])))`,
fail: false,
},
{
// Passing the address of a static variable with no
// pointers doesn't matter.
name: "varok",
c: `void f(char** parg) {}`,
support: `var hello = [...]C.char{'h', 'e', 'l', 'l', 'o'}`,
body: `parg := [1]*C.char{&hello[0]}; C.f(&parg[0])`,
fail: false,
},
{
// Passing the address of a static variable with
// pointers does matter.
name: "var",
c: `void f(char*** parg) {}`,
support: `var hello = [...]*C.char{new(C.char)}`,
body: `parg := [1]**C.char{&hello[0]}; C.f(&parg[0])`,
fail: true,
},
{
// Storing a Go pointer into C memory should fail.
name: "barrier",
c: `#include <stdlib.h>
char **f1() { return malloc(sizeof(char*)); }
void f2(char **p) {}`,
body: `p := C.f1(); *p = new(C.char); C.f2(p)`,
fail: true,
expensive: true,
},
{
// Storing a Go pointer into C memory by assigning a
// large value should fail.
name: "barrier-struct",
c: `#include <stdlib.h>
struct s { char *a[10]; };
struct s *f1() { return malloc(sizeof(struct s)); }
void f2(struct s *p) {}`,
body: `p := C.f1(); p.a = [10]*C.char{new(C.char)}; C.f2(p)`,
fail: true,
expensive: true,
},
{
// Storing a Go pointer into C memory using a slice
// copy should fail.
name: "barrier-slice",
c: `#include <stdlib.h>
struct s { char *a[10]; };
struct s *f1() { return malloc(sizeof(struct s)); }
void f2(struct s *p) {}`,
body: `p := C.f1(); copy(p.a[:], []*C.char{new(C.char)}); C.f2(p)`,
fail: true,
expensive: true,
},
{
// A very large value uses a GC program, which is a
// different code path.
name: "barrier-gcprog-array",
c: `#include <stdlib.h>
struct s { char *a[32769]; };
struct s *f1() { return malloc(sizeof(struct s)); }
void f2(struct s *p) {}`,
body: `p := C.f1(); p.a = [32769]*C.char{new(C.char)}; C.f2(p)`,
fail: true,
expensive: true,
},
{
// Similar case, with a source on the heap.
name: "barrier-gcprog-array-heap",
c: `#include <stdlib.h>
struct s { char *a[32769]; };
struct s *f1() { return malloc(sizeof(struct s)); }
void f2(struct s *p) {}
void f3(void *p) {}`,
imports: []string{"unsafe"},
body: `p := C.f1(); n := &[32769]*C.char{new(C.char)}; p.a = *n; C.f2(p); n[0] = nil; C.f3(unsafe.Pointer(n))`,
fail: true,
expensive: true,
},
{
// A GC program with a struct.
name: "barrier-gcprog-struct",
c: `#include <stdlib.h>
struct s { char *a[32769]; };
struct s2 { struct s f; };
struct s2 *f1() { return malloc(sizeof(struct s2)); }
void f2(struct s2 *p) {}`,
body: `p := C.f1(); p.f = C.struct_s{[32769]*C.char{new(C.char)}}; C.f2(p)`,
fail: true,
expensive: true,
},
{
// Similar case, with a source on the heap.
name: "barrier-gcprog-struct-heap",
c: `#include <stdlib.h>
struct s { char *a[32769]; };
struct s2 { struct s f; };
struct s2 *f1() { return malloc(sizeof(struct s2)); }
void f2(struct s2 *p) {}
void f3(void *p) {}`,
imports: []string{"unsafe"},
body: `p := C.f1(); n := &C.struct_s{[32769]*C.char{new(C.char)}}; p.f = *n; C.f2(p); n.a[0] = nil; C.f3(unsafe.Pointer(n))`,
fail: true,
expensive: true,
},
{
// Exported functions may not return Go pointers.
name: "export1",
c: `extern unsigned char *GoFn();`,
support: `//export GoFn
func GoFn() *byte { return new(byte) }`,
body: `C.GoFn()`,
fail: true,
},
{
// Returning a C pointer is fine.
name: "exportok",
c: `#include <stdlib.h>
extern unsigned char *GoFn();`,
support: `//export GoFn
func GoFn() *byte { return (*byte)(C.malloc(1)) }`,
body: `C.GoFn()`,
},
{
// Passing a Go string is fine.
name: "pass-string",
c: `#include <stddef.h>
typedef struct { const char *p; ptrdiff_t n; } gostring;
gostring f(gostring s) { return s; }`,
imports: []string{"unsafe"},
body: `s := "a"; r := C.f(*(*C.gostring)(unsafe.Pointer(&s))); if *(*string)(unsafe.Pointer(&r)) != s { panic(r) }`,
},
{
// Passing a slice of Go strings fails.
name: "pass-string-slice",
c: `void f(void *p) {}`,
imports: []string{"strings", "unsafe"},
support: `type S struct { a [1]string }`,
body: `s := S{a:[1]string{strings.Repeat("a", 2)}}; C.f(unsafe.Pointer(&s.a[0]))`,
fail: true,
},
{
// Exported functions may not return strings.
name: "ret-string",
c: `extern void f();`,
imports: []string{"strings"},
support: `//export GoStr
func GoStr() string { return strings.Repeat("a", 2) }`,
body: `C.f()`,
extra: []extra{
{
"call.c",
`#include <stddef.h>
typedef struct { const char *p; ptrdiff_t n; } gostring;
extern gostring GoStr();
void f() { GoStr(); }`,
},
},
fail: true,
},
{
// Don't check non-pointer data.
// Uses unsafe code to get a pointer we shouldn't check.
// Although we use unsafe, the uintptr represents an integer
// that happens to have the same representation as a pointer;
// that is, we are testing something that is not unsafe.
name: "ptrdata1",
c: `#include <stdlib.h>
void f(void* p) {}`,
imports: []string{"unsafe"},
support: `type S struct { p *int; a [8*8]byte; u uintptr }`,
body: `i := 0; p := &S{u:uintptr(unsafe.Pointer(&i))}; q := (*S)(C.malloc(C.size_t(unsafe.Sizeof(*p)))); *q = *p; C.f(unsafe.Pointer(q))`,
fail: false,
},
{
// Like ptrdata1, but with a type that uses a GC program.
name: "ptrdata2",
c: `#include <stdlib.h>
void f(void* p) {}`,
imports: []string{"unsafe"},
support: `type S struct { p *int; a [32769*8]byte; q *int; u uintptr }`,
body: `i := 0; p := S{u:uintptr(unsafe.Pointer(&i))}; q := (*S)(C.malloc(C.size_t(unsafe.Sizeof(p)))); *q = p; C.f(unsafe.Pointer(q))`,
fail: false,
},
{
// Check deferred pointers when they are used, not
// when the defer statement is run.
name: "defer",
c: `typedef struct s { int *p; } s; void f(s *ps) {}`,
body: `p := &C.s{}; defer C.f(p); p.p = new(C.int)`,
fail: true,
},
{
// Check a pointer to a union if the union has any
// pointer fields.
name: "union1",
c: `typedef union { char **p; unsigned long i; } u; void f(u *pu) {}`,
imports: []string{"unsafe"},
body: `var b C.char; p := &b; C.f((*C.u)(unsafe.Pointer(&p)))`,
fail: true,
},
{
// Don't check a pointer to a union if the union does
// not have any pointer fields.
// Like ptrdata1 above, the uintptr represents an
// integer that happens to have the same
// representation as a pointer.
name: "union2",
c: `typedef union { unsigned long i; } u; void f(u *pu) {}`,
imports: []string{"unsafe"},
body: `var b C.char; p := &b; C.f((*C.u)(unsafe.Pointer(&p)))`,
fail: false,
},
}
func main() {
os.Exit(doTests())
}
func doTests() int {
gopath, err := ioutil.TempDir("", "cgoerrors")
if err != nil {
fmt.Fprintln(os.Stderr, err)
return 2
}
defer os.RemoveAll(gopath)
if err := os.MkdirAll(filepath.Join(gopath, "src"), 0777); err != nil {
fmt.Fprintln(os.Stderr, err)
return 2
}
workers := runtime.NumCPU() + 1
var wg sync.WaitGroup
c := make(chan int)
errs := make(chan int)
for i := 0; i < workers; i++ {
wg.Add(1)
go func() {
worker(gopath, c, errs)
wg.Done()
}()
}
for i := range ptrTests {
c <- i
}
close(c)
go func() {
wg.Wait()
close(errs)
}()
tot := 0
for e := range errs {
tot += e
}
return tot
}
func worker(gopath string, c, errs chan int) {
e := 0
for i := range c {
if !doOne(gopath, i) {
e++
}
}
if e > 0 {
errs <- e
}
}
func doOne(gopath string, i int) bool {
t := &ptrTests[i]
dir := filepath.Join(gopath, "src", fmt.Sprintf("dir%d", i))
if err := os.Mkdir(dir, 0777); err != nil {
fmt.Fprintln(os.Stderr, err)
return false
}
name := filepath.Join(dir, fmt.Sprintf("t%d.go", i))
f, err := os.Create(name)
if err != nil {
fmt.Fprintln(os.Stderr, err)
return false
}
b := bufio.NewWriter(f)
fmt.Fprintln(b, `package main`)
fmt.Fprintln(b)
fmt.Fprintln(b, `/*`)
fmt.Fprintln(b, t.c)
fmt.Fprintln(b, `*/`)
fmt.Fprintln(b, `import "C"`)
fmt.Fprintln(b)
for _, imp := range t.imports {
fmt.Fprintln(b, `import "`+imp+`"`)
}
if len(t.imports) > 0 {
fmt.Fprintln(b)
}
if len(t.support) > 0 {
fmt.Fprintln(b, t.support)
fmt.Fprintln(b)
}
fmt.Fprintln(b, `func main() {`)
fmt.Fprintln(b, t.body)
fmt.Fprintln(b, `}`)
if err := b.Flush(); err != nil {
fmt.Fprintf(os.Stderr, "flushing %s: %v\n", name, err)
return false
}
if err := f.Close(); err != nil {
fmt.Fprintf(os.Stderr, "closing %s: %v\n", name, err)
return false
}
for _, e := range t.extra {
if err := ioutil.WriteFile(filepath.Join(dir, e.name), []byte(e.contents), 0644); err != nil {
fmt.Fprintf(os.Stderr, "writing %s: %v\n", e.name, err)
return false
}
}
ok := true
cmd := exec.Command("go", "build")
cmd.Dir = dir
cmd.Env = addEnv("GOPATH", gopath)
buf, err := cmd.CombinedOutput()
if err != nil {
fmt.Fprintf(os.Stderr, "test %s failed to build: %v\n%s", t.name, err, buf)
return false
}
exe := filepath.Join(dir, filepath.Base(dir))
cmd = exec.Command(exe)
cmd.Dir = dir
if t.expensive {
cmd.Env = cgocheckEnv("1")
buf, err := cmd.CombinedOutput()
if err != nil {
var errbuf bytes.Buffer
if t.fail {
fmt.Fprintf(&errbuf, "test %s marked expensive but failed when not expensive: %v\n", t.name, err)
} else {
fmt.Fprintf(&errbuf, "test %s failed unexpectedly with GODEBUG=cgocheck=1: %v\n", t.name, err)
}
reportTestOutput(&errbuf, t.name, buf)
os.Stderr.Write(errbuf.Bytes())
ok = false
}
cmd = exec.Command(exe)
cmd.Dir = dir
}
if t.expensive {
cmd.Env = cgocheckEnv("2")
}
buf, err = cmd.CombinedOutput()
if t.fail {
if err == nil {
var errbuf bytes.Buffer
fmt.Fprintf(&errbuf, "test %s did not fail as expected\n", t.name)
reportTestOutput(&errbuf, t.name, buf)
os.Stderr.Write(errbuf.Bytes())
ok = false
} else if !bytes.Contains(buf, []byte("Go pointer")) {
var errbuf bytes.Buffer
fmt.Fprintf(&errbuf, "test %s output does not contain expected error (failed with %v)\n", t.name, err)
reportTestOutput(&errbuf, t.name, buf)
os.Stderr.Write(errbuf.Bytes())
ok = false
}
} else {
if err != nil {
var errbuf bytes.Buffer
fmt.Fprintf(&errbuf, "test %s failed unexpectedly: %v\n", t.name, err)
reportTestOutput(&errbuf, t.name, buf)
os.Stderr.Write(errbuf.Bytes())
ok = false
}
if !t.expensive && ok {
// Make sure it passes with the expensive checks.
cmd := exec.Command(exe)
cmd.Dir = dir
cmd.Env = cgocheckEnv("2")
buf, err := cmd.CombinedOutput()
if err != nil {
var errbuf bytes.Buffer
fmt.Fprintf(&errbuf, "test %s failed unexpectedly with expensive checks: %v\n", t.name, err)
reportTestOutput(&errbuf, t.name, buf)
os.Stderr.Write(errbuf.Bytes())
ok = false
}
}
}
if t.fail && ok {
cmd = exec.Command(exe)
cmd.Dir = dir
cmd.Env = cgocheckEnv("0")
buf, err := cmd.CombinedOutput()
if err != nil {
var errbuf bytes.Buffer
fmt.Fprintf(&errbuf, "test %s failed unexpectedly with GODEBUG=cgocheck=0: %v\n", t.name, err)
reportTestOutput(&errbuf, t.name, buf)
os.Stderr.Write(errbuf.Bytes())
ok = false
}
}
return ok
}
func reportTestOutput(w io.Writer, name string, buf []byte) {
fmt.Fprintf(w, "=== test %s output ===\n", name)
fmt.Fprintf(w, "%s", buf)
fmt.Fprintf(w, "=== end of test %s output ===\n", name)
}
func cgocheckEnv(val string) []string {
return addEnv("GODEBUG", "cgocheck="+val)
}
func addEnv(key, val string) []string {
env := []string{key + "=" + val}
look := key + "="
for _, e := range os.Environ() {
if !strings.HasPrefix(e, look) {
env = append(env, e)
}
}
return env
}

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#!/usr/bin/env bash
# Copyright 2013 The Go Authors. All rights reserved.
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.
check() {
file=$1
line=$(grep -n 'ERROR HERE' $file | sed 's/:.*//')
if [ "$line" = "" ]; then
echo 1>&2 misc/cgo/errors/test.bash: BUG: cannot find ERROR HERE in $file
exit 1
fi
expect $file $file:$line:
}
expect() {
file=$1
shift
if go build $file >errs 2>&1; then
echo 1>&2 misc/cgo/errors/test.bash: BUG: expected cgo to fail on $file but it succeeded
exit 1
fi
if ! test -s errs; then
echo 1>&2 misc/cgo/errors/test.bash: BUG: expected error output for $file but saw none
exit 1
fi
for error; do
if ! fgrep $error errs >/dev/null 2>&1; then
echo 1>&2 misc/cgo/errors/test.bash: BUG: expected error output for $file to contain \"$error\" but saw:
cat 1>&2 errs
exit 1
fi
done
}
check err1.go
check err2.go
check err3.go
check issue7757.go
check issue8442.go
check issue11097a.go
check issue11097b.go
expect issue13129.go C.ushort
check issue13423.go
expect issue13635.go C.uchar C.schar C.ushort C.uint C.ulong C.longlong C.ulonglong C.complexfloat C.complexdouble
check issue13830.go
check issue16116.go
check issue16591.go
if ! go build issue14669.go; then
exit 1
fi
if ! CGO_CFLAGS="-O" go build issue14669.go; then
exit 1
fi
if ! go run ptr.go; then
exit 1
fi
# The malloc.go test should crash.
rm -f malloc.out
if go run malloc.go >malloc.out 2>&1; then
echo '`go run malloc.go` succeeded unexpectedly'
cat malloc.out
rm -f malloc.out
exit 1
fi
rm -f malloc.out
rm -rf errs _obj
exit 0

9
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! Copyright 2016 The Go Authors. All rights reserved.
! Use of this source code is governed by a BSD-style
! license that can be found in the LICENSE file.
function the_answer() result(j) bind(C)
use iso_c_binding, only: c_int
integer(c_int) :: j ! output
j = 42
end function the_answer

12
libgo/misc/cgo/fortran/fortran.go Normal file
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// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package fortran
// int the_answer();
import "C"
func TheAnswer() int {
return int(C.the_answer())
}

13
libgo/misc/cgo/fortran/fortran_test.go Normal file
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// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package fortran
import "testing"
func TestFortran(t *testing.T) {
if a := TheAnswer(); a != 42 {
t.Errorf("Unexpected result for The Answer. Got: %d Want: 42", a)
}
}

3
libgo/misc/cgo/fortran/helloworld/helloworld.f90 Normal file
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program HelloWorldF90
write(*,*) "Hello World!"
end program HelloWorldF90

39
libgo/misc/cgo/fortran/test.bash Normal file
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#!/usr/bin/env bash
# Copyright 2016 The Go Authors. All rights reserved.
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.
# This directory is intended to test the use of Fortran with cgo.
set -e
FC=$1
goos=$(go env GOOS)
libext="so"
if [ "$goos" == "darwin" ]; then
libext="dylib"
fi
case "$FC" in
*gfortran*)
libpath=$(dirname $($FC -print-file-name=libgfortran.$libext))
export CGO_LDFLAGS="$CGO_LDFLAGS -Wl,-rpath,$libpath -L $libpath"
;;
esac
if ! $FC helloworld/helloworld.f90 -o main.exe >& /dev/null; then
echo "skipping Fortran test: could not build helloworld.f90 with $FC"
exit 0
fi
rm -f main.exe
status=0
if ! go test; then
echo "FAIL: go test"
status=1
fi
exit $status

45
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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build ignore
// Compute Fibonacci numbers with two goroutines
// that pass integers back and forth. No actual
// concurrency, just threads and synchronization
// and foreign code on multiple pthreads.
package main
import (
big "."
"runtime"
)
func fibber(c chan *big.Int, out chan string, n int64) {
// Keep the fibbers in dedicated operating system
// threads, so that this program tests coordination
// between pthreads and not just goroutines.
runtime.LockOSThread()
i := big.NewInt(n)
if n == 0 {
c <- i
}
for {
j := <-c
out <- j.String()
i.Add(i, j)
c <- i
}
}
func main() {
c := make(chan *big.Int)
out := make(chan string)
go fibber(c, out, 0)
go fibber(c, out, 1)
for i := 0; i < 200; i++ {
println(<-out)
}
}

380
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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
/*
An example of wrapping a C library in Go. This is the GNU
multiprecision library gmp's integer type mpz_t wrapped to look like
the Go package big's integer type Int.
This is a syntactically valid Go program—it can be parsed with the Go
parser and processed by godoc—but it is not compiled directly by gc.
Instead, a separate tool, cgo, processes it to produce three output
files. The first two, 6g.go and 6c.c, are a Go source file for 6g and
a C source file for 6c; both compile as part of the named package
(gmp, in this example). The third, gcc.c, is a C source file for gcc;
it compiles into a shared object (.so) that is dynamically linked into
any 6.out that imports the first two files.
The stanza
// #include <gmp.h>
import "C"
is a signal to cgo. The doc comment on the import of "C" provides
additional context for the C file. Here it is just a single #include
but it could contain arbitrary C definitions to be imported and used.
Cgo recognizes any use of a qualified identifier C.xxx and uses gcc to
find the definition of xxx. If xxx is a type, cgo replaces C.xxx with
a Go translation. C arithmetic types translate to precisely-sized Go
arithmetic types. A C struct translates to a Go struct, field by
field; unrepresentable fields are replaced with opaque byte arrays. A
C union translates into a struct containing the first union member and
perhaps additional padding. C arrays become Go arrays. C pointers
become Go pointers. C function pointers become Go's uintptr.
C void pointers become Go's unsafe.Pointer.
For example, mpz_t is defined in <gmp.h> as:
typedef unsigned long int mp_limb_t;
typedef struct
{
int _mp_alloc;
int _mp_size;
mp_limb_t *_mp_d;
} __mpz_struct;
typedef __mpz_struct mpz_t[1];
Cgo generates:
type _C_int int32
type _C_mp_limb_t uint64
type _C___mpz_struct struct {
_mp_alloc _C_int;
_mp_size _C_int;
_mp_d *_C_mp_limb_t;
}
type _C_mpz_t [1]_C___mpz_struct
and then replaces each occurrence of a type C.xxx with _C_xxx.
If xxx is data, cgo arranges for C.xxx to refer to the C variable,
with the type translated as described above. To do this, cgo must
introduce a Go variable that points at the C variable (the linker can
be told to initialize this pointer). For example, if the gmp library
provided
mpz_t zero;
then cgo would rewrite a reference to C.zero by introducing
var _C_zero *C.mpz_t
and then replacing all instances of C.zero with (*_C_zero).
Cgo's most interesting translation is for functions. If xxx is a C
function, then cgo rewrites C.xxx into a new function _C_xxx that
calls the C xxx in a standard pthread. The new function translates
its arguments, calls xxx, and translates the return value.
Translation of parameters and the return value follows the type
translation above except that arrays passed as parameters translate
explicitly in Go to pointers to arrays, as they do (implicitly) in C.
Garbage collection is the big problem. It is fine for the Go world to
have pointers into the C world and to free those pointers when they
are no longer needed. To help, the Go code can define Go objects
holding the C pointers and use runtime.SetFinalizer on those Go objects.
It is much more difficult for the C world to have pointers into the Go
world, because the Go garbage collector is unaware of the memory
allocated by C. The most important consideration is not to
constrain future implementations, so the rule is that Go code can
hand a Go pointer to C code but must separately arrange for
Go to hang on to a reference to the pointer until C is done with it.
*/
package gmp
/*
#cgo LDFLAGS: -lgmp
#include <gmp.h>
#include <stdlib.h>
// gmp 5.0.0+ changed the type of the 3rd argument to mp_bitcnt_t,
// so, to support older versions, we wrap these two functions.
void _mpz_mul_2exp(mpz_ptr a, mpz_ptr b, unsigned long n) {
mpz_mul_2exp(a, b, n);
}
void _mpz_div_2exp(mpz_ptr a, mpz_ptr b, unsigned long n) {
mpz_div_2exp(a, b, n);
}
*/
import "C"
import (
"os"
"unsafe"
)
/*
* one of a kind
*/
// An Int represents a signed multi-precision integer.
// The zero value for an Int represents the value 0.
type Int struct {
i C.mpz_t
init bool
}
// NewInt returns a new Int initialized to x.
func NewInt(x int64) *Int { return new(Int).SetInt64(x) }
// Int promises that the zero value is a 0, but in gmp
// the zero value is a crash. To bridge the gap, the
// init bool says whether this is a valid gmp value.
// doinit initializes z.i if it needs it. This is not inherent
// to FFI, just a mismatch between Go's convention of
// making zero values useful and gmp's decision not to.
func (z *Int) doinit() {
if z.init {
return
}
z.init = true
C.mpz_init(&z.i[0])
}
// Bytes returns z's representation as a big-endian byte array.
func (z *Int) Bytes() []byte {
b := make([]byte, (z.Len()+7)/8)
n := C.size_t(len(b))
C.mpz_export(unsafe.Pointer(&b[0]), &n, 1, 1, 1, 0, &z.i[0])
return b[0:n]
}
// Len returns the length of z in bits. 0 is considered to have length 1.
func (z *Int) Len() int {
z.doinit()
return int(C.mpz_sizeinbase(&z.i[0], 2))
}
// Set sets z = x and returns z.
func (z *Int) Set(x *Int) *Int {
z.doinit()
C.mpz_set(&z.i[0], &x.i[0])
return z
}
// SetBytes interprets b as the bytes of a big-endian integer
// and sets z to that value.
func (z *Int) SetBytes(b []byte) *Int {
z.doinit()
if len(b) == 0 {
z.SetInt64(0)
} else {
C.mpz_import(&z.i[0], C.size_t(len(b)), 1, 1, 1, 0, unsafe.Pointer(&b[0]))
}
return z
}
// SetInt64 sets z = x and returns z.
func (z *Int) SetInt64(x int64) *Int {
z.doinit()
// TODO(rsc): more work on 32-bit platforms
C.mpz_set_si(&z.i[0], C.long(x))
return z
}
// SetString interprets s as a number in the given base
// and sets z to that value. The base must be in the range [2,36].
// SetString returns an error if s cannot be parsed or the base is invalid.
func (z *Int) SetString(s string, base int) error {
z.doinit()
if base < 2 || base > 36 {
return os.ErrInvalid
}
p := C.CString(s)
defer C.free(unsafe.Pointer(p))
if C.mpz_set_str(&z.i[0], p, C.int(base)) < 0 {
return os.ErrInvalid
}
return nil
}
// String returns the decimal representation of z.
func (z *Int) String() string {
if z == nil {
return "nil"
}
z.doinit()
p := C.mpz_get_str(nil, 10, &z.i[0])
s := C.GoString(p)
C.free(unsafe.Pointer(p))
return s
}
func (z *Int) destroy() {
if z.init {
C.mpz_clear(&z.i[0])
}
z.init = false
}
/*
* arithmetic
*/
// Add sets z = x + y and returns z.
func (z *Int) Add(x, y *Int) *Int {
x.doinit()
y.doinit()
z.doinit()
C.mpz_add(&z.i[0], &x.i[0], &y.i[0])
return z
}
// Sub sets z = x - y and returns z.
func (z *Int) Sub(x, y *Int) *Int {
x.doinit()
y.doinit()
z.doinit()
C.mpz_sub(&z.i[0], &x.i[0], &y.i[0])
return z
}
// Mul sets z = x * y and returns z.
func (z *Int) Mul(x, y *Int) *Int {
x.doinit()
y.doinit()
z.doinit()
C.mpz_mul(&z.i[0], &x.i[0], &y.i[0])
return z
}
// Div sets z = x / y, rounding toward zero, and returns z.
func (z *Int) Div(x, y *Int) *Int {
x.doinit()
y.doinit()
z.doinit()
C.mpz_tdiv_q(&z.i[0], &x.i[0], &y.i[0])
return z
}
// Mod sets z = x % y and returns z.
// Like the result of the Go % operator, z has the same sign as x.
func (z *Int) Mod(x, y *Int) *Int {
x.doinit()
y.doinit()
z.doinit()
C.mpz_tdiv_r(&z.i[0], &x.i[0], &y.i[0])
return z
}
// Lsh sets z = x << s and returns z.
func (z *Int) Lsh(x *Int, s uint) *Int {
x.doinit()
z.doinit()
C._mpz_mul_2exp(&z.i[0], &x.i[0], C.ulong(s))
return z
}
// Rsh sets z = x >> s and returns z.
func (z *Int) Rsh(x *Int, s uint) *Int {
x.doinit()
z.doinit()
C._mpz_div_2exp(&z.i[0], &x.i[0], C.ulong(s))
return z
}
// Exp sets z = x^y % m and returns z.
// If m == nil, Exp sets z = x^y.
func (z *Int) Exp(x, y, m *Int) *Int {
m.doinit()
x.doinit()
y.doinit()
z.doinit()
if m == nil {
C.mpz_pow_ui(&z.i[0], &x.i[0], C.mpz_get_ui(&y.i[0]))
} else {
C.mpz_powm(&z.i[0], &x.i[0], &y.i[0], &m.i[0])
}
return z
}
func (z *Int) Int64() int64 {
if !z.init {
return 0
}
return int64(C.mpz_get_si(&z.i[0]))
}
// Neg sets z = -x and returns z.
func (z *Int) Neg(x *Int) *Int {
x.doinit()
z.doinit()
C.mpz_neg(&z.i[0], &x.i[0])
return z
}
// Abs sets z to the absolute value of x and returns z.
func (z *Int) Abs(x *Int) *Int {
x.doinit()
z.doinit()
C.mpz_abs(&z.i[0], &x.i[0])
return z
}
/*
* functions without a clear receiver
*/
// CmpInt compares x and y. The result is
//
// -1 if x < y
// 0 if x == y
// +1 if x > y
//
func CmpInt(x, y *Int) int {
x.doinit()
y.doinit()
switch cmp := C.mpz_cmp(&x.i[0], &y.i[0]); {
case cmp < 0:
return -1
case cmp == 0:
return 0
}
return +1
}
// DivModInt sets q = x / y and r = x % y.
func DivModInt(q, r, x, y *Int) {
q.doinit()
r.doinit()
x.doinit()
y.doinit()
C.mpz_tdiv_qr(&q.i[0], &r.i[0], &x.i[0], &y.i[0])
}
// GcdInt sets d to the greatest common divisor of a and b,
// which must be positive numbers.
// If x and y are not nil, GcdInt sets x and y such that d = a*x + b*y.
// If either a or b is not positive, GcdInt sets d = x = y = 0.
func GcdInt(d, x, y, a, b *Int) {
d.doinit()
x.doinit()
y.doinit()
a.doinit()
b.doinit()
C.mpz_gcdext(&d.i[0], &x.i[0], &y.i[0], &a.i[0], &b.i[0])
}
// ProbablyPrime performs n Miller-Rabin tests to check whether z is prime.
// If it returns true, z is prime with probability 1 - 1/4^n.
// If it returns false, z is not prime.
func (z *Int) ProbablyPrime(n int) bool {
z.doinit()
return int(C.mpz_probab_prime_p(&z.i[0], C.int(n))) > 0
}

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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build ignore
package main
import (
big "."
"fmt"
"runtime"
)
var (
tmp1 = big.NewInt(0)
tmp2 = big.NewInt(0)
numer = big.NewInt(1)
accum = big.NewInt(0)
denom = big.NewInt(1)
ten = big.NewInt(10)
)
func extractDigit() int64 {
if big.CmpInt(numer, accum) > 0 {
return -1
}
tmp1.Lsh(numer, 1).Add(tmp1, numer).Add(tmp1, accum)
big.DivModInt(tmp1, tmp2, tmp1, denom)
tmp2.Add(tmp2, numer)
if big.CmpInt(tmp2, denom) >= 0 {
return -1
}
return tmp1.Int64()
}
func nextTerm(k int64) {
y2 := k*2 + 1
accum.Add(accum, tmp1.Lsh(numer, 1))
accum.Mul(accum, tmp1.SetInt64(y2))
numer.Mul(numer, tmp1.SetInt64(k))
denom.Mul(denom, tmp1.SetInt64(y2))
}
func eliminateDigit(d int64) {
accum.Sub(accum, tmp1.Mul(denom, tmp1.SetInt64(d)))
accum.Mul(accum, ten)
numer.Mul(numer, ten)
}
func main() {
i := 0
k := int64(0)
for {
d := int64(-1)
for d < 0 {
k++
nextTerm(k)
d = extractDigit()
}
eliminateDigit(d)
fmt.Printf("%c", d+'0')
if i++; i%50 == 0 {
fmt.Printf("\n")
if i >= 1000 {
break
}
}
}
fmt.Printf("\n%d calls; bit sizes: %d %d %d\n", runtime.NumCgoCall(), numer.Len(), accum.Len(), denom.Len())
}

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// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
#include <assert.h>
#include "life.h"
#include "_cgo_export.h"
const int MYCONST = 0;
// Do the actual manipulation of the life board in C. This could be
// done easily in Go, we are just using C for demonstration
// purposes.
void
Step(int x, int y, int *a, int *n)
{
struct GoStart_return r;
// Use Go to start 4 goroutines each of which handles 1/4 of the
// board.
r = GoStart(0, x, y, 0, x / 2, 0, y / 2, a, n);
assert(r.r0 == 0 && r.r1 == 100); // test multiple returns
r = GoStart(1, x, y, x / 2, x, 0, y / 2, a, n);
assert(r.r0 == 1 && r.r1 == 101); // test multiple returns
GoStart(2, x, y, 0, x / 2, y / 2, y, a, n);
GoStart(3, x, y, x / 2, x, y / 2, y, a, n);
GoWait(0);
GoWait(1);
GoWait(2);
GoWait(3);
}
// The actual computation. This is called in parallel.
void
DoStep(int xdim, int ydim, int xstart, int xend, int ystart, int yend, int *a, int *n)
{
int x, y, c, i, j;
for(x = xstart; x < xend; x++) {
for(y = ystart; y < yend; y++) {
c = 0;
for(i = -1; i <= 1; i++) {
for(j = -1; j <= 1; j++) {
if(x+i >= 0 && x+i < xdim &&
y+j >= 0 && y+j < ydim &&
(i != 0 || j != 0))
c += a[(x+i)*xdim + (y+j)] != 0;
}
}
if(c == 3 || (c == 2 && a[x*xdim + y] != 0))
n[x*xdim + y] = 1;
else
n[x*xdim + y] = 0;
}
}
}

41
libgo/misc/cgo/life/life.go Normal file
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@ -0,0 +1,41 @@
// skip
// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package life
// #include "life.h"
import "C"
import "unsafe"
func Run(gen, x, y int, a []int32) {
n := make([]int32, x*y)
for i := 0; i < gen; i++ {
C.Step(C.int(x), C.int(y), (*C.int)(unsafe.Pointer(&a[0])), (*C.int)(unsafe.Pointer(&n[0])))
copy(a, n)
}
}
// Keep the channels visible from Go.
var chans [4]chan bool
//export GoStart
// Double return value is just for testing.
func GoStart(i, xdim, ydim, xstart, xend, ystart, yend C.int, a *C.int, n *C.int) (int, int) {
c := make(chan bool, int(C.MYCONST))
go func() {
C.DoStep(xdim, ydim, xstart, xend, ystart, yend, a, n)
c <- true
}()
chans[i] = c
return int(i), int(i + 100)
}
//export GoWait
func GoWait(i C.int) {
<-chans[i]
chans[i] = nil
}

7
libgo/misc/cgo/life/life.h Normal file
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@ -0,0 +1,7 @@
// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
extern void Step(int, int, int *, int *);
extern void DoStep(int, int, int, int, int, int, int *, int *);
extern const int MYCONST;

48
libgo/misc/cgo/life/main.go Normal file
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@ -0,0 +1,48 @@
// cmpout
// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build test_run
// Run the game of life in C using Go for parallelization.
package main
import (
"."
"flag"
"fmt"
)
const MAXDIM = 100
var dim = flag.Int("dim", 16, "board dimensions")
var gen = flag.Int("gen", 10, "generations")
func main() {
flag.Parse()
var a [MAXDIM * MAXDIM]int32
for i := 2; i < *dim; i += 8 {
for j := 2; j < *dim-3; j += 8 {
for y := 0; y < 3; y++ {
a[i**dim+j+y] = 1
}
}
}
life.Run(*gen, *dim, *dim, a[:])
for i := 0; i < *dim; i++ {
for j := 0; j < *dim; j++ {
if a[i**dim+j] == 0 {
fmt.Print(" ")
} else {
fmt.Print("X")
}
}
fmt.Print("\n")
}
}

16
libgo/misc/cgo/life/main.out Normal file
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@ -0,0 +1,16 @@
XXX XXX
XXX XXX

22
libgo/misc/cgo/nocgo/nocgo.go Normal file
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@ -0,0 +1,22 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Test that -static works when not using cgo. This test is in
// misc/cgo to take advantage of the testing framework support for
// when -static is expected to work.
package nocgo
func NoCgo() int {
c := make(chan int)
// The test is run with external linking, which means that
// goroutines will be created via the runtime/cgo package.
// Make sure that works.
go func() {
c <- 42
}()
return <-c
}

14
libgo/misc/cgo/nocgo/nocgo_test.go Normal file
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@ -0,0 +1,14 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package nocgo
import "testing"
func TestNop(t *testing.T) {
i := NoCgo()
if i != 42 {
t.Errorf("got %d, want %d", i, 42)
}
}

48
libgo/misc/cgo/stdio/chain.go Normal file
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@ -0,0 +1,48 @@
// cmpout
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build test_run
// Pass numbers along a chain of threads.
package main
import (
"runtime"
"strconv"
"../stdio"
)
const N = 10
const R = 5
func link(left chan<- int, right <-chan int) {
// Keep the links in dedicated operating system
// threads, so that this program tests coordination
// between pthreads and not just goroutines.
runtime.LockOSThread()
for {
v := <-right
stdio.Stdout.WriteString(strconv.Itoa(v) + "\n")
left <- 1 + v
}
}
func main() {
leftmost := make(chan int)
var left chan int
right := leftmost
for i := 0; i < N; i++ {
left, right = right, make(chan int)
go link(left, right)
}
for i := 0; i < R; i++ {
right <- 0
x := <-leftmost
stdio.Stdout.WriteString(strconv.Itoa(x) + "\n")
}
}

55
libgo/misc/cgo/stdio/chain.out Normal file
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@ -0,0 +1,55 @@
0
1
2
3
4
5
6
7
8
9
10
0
1
2
3
4
5
6
7
8
9
10
0
1
2
3
4
5
6
7
8
9
10
0
1
2
3
4
5
6
7
8
9
10
0
1
2
3
4
5
6
7
8
9
10

52
libgo/misc/cgo/stdio/fib.go Normal file
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@ -0,0 +1,52 @@
// cmpout
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build test_run
// Compute Fibonacci numbers with two goroutines
// that pass integers back and forth. No actual
// concurrency, just threads and synchronization
// and foreign code on multiple pthreads.
package main
import (
"runtime"
"strconv"
"../stdio"
)
func fibber(c, out chan int64, i int64) {
// Keep the fibbers in dedicated operating system
// threads, so that this program tests coordination
// between pthreads and not just goroutines.
runtime.LockOSThread()
if i == 0 {
c <- i
}
for {
j := <-c
stdio.Stdout.WriteString(strconv.FormatInt(j, 10) + "\n")
out <- j
<-out
i += j
c <- i
}
}
func main() {
c := make(chan int64)
out := make(chan int64)
go fibber(c, out, 0)
go fibber(c, out, 1)
<-out
for i := 0; i < 90; i++ {
out <- 1
<-out
}
}

91
libgo/misc/cgo/stdio/fib.out Normal file
View File

@ -0,0 +1,91 @@
0
1
1
2
3
5
8
13
21
34
55
89
144
233
377
610
987
1597
2584
4181
6765
10946
17711
28657
46368
75025
121393
196418
317811
514229
832040
1346269
2178309
3524578
5702887
9227465
14930352
24157817
39088169
63245986
102334155
165580141
267914296
433494437
701408733
1134903170
1836311903
2971215073
4807526976
7778742049
12586269025
20365011074
32951280099
53316291173
86267571272
139583862445
225851433717
365435296162
591286729879
956722026041
1548008755920
2504730781961
4052739537881
6557470319842
10610209857723
17167680177565
27777890035288
44945570212853
72723460248141
117669030460994
190392490709135
308061521170129
498454011879264
806515533049393
1304969544928657
2111485077978050
3416454622906707
5527939700884757
8944394323791464
14472334024676221
23416728348467685
37889062373143906
61305790721611591
99194853094755497
160500643816367088
259695496911122585
420196140727489673
679891637638612258
1100087778366101931
1779979416004714189
2880067194370816120

44
libgo/misc/cgo/stdio/file.go Normal file
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@ -0,0 +1,44 @@
// skip
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
/*
A trivial example of wrapping a C library in Go.
For a more complex example and explanation,
see ../gmp/gmp.go.
*/
package stdio
/*
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <errno.h>
char* greeting = "hello, world";
*/
import "C"
import "unsafe"
type File C.FILE
// Test reference to library symbol.
// Stdout and stderr are too special to be a reliable test.
//var = C.environ
func (f *File) WriteString(s string) {
p := C.CString(s)
C.fputs(p, (*C.FILE)(f))
C.free(unsafe.Pointer(p))
f.Flush()
}
func (f *File) Flush() {
C.fflush((*C.FILE)(f))
}
var Greeting = C.GoString(C.greeting)
var Gbytes = C.GoBytes(unsafe.Pointer(C.greeting), C.int(len(Greeting)))

15
libgo/misc/cgo/stdio/hello.go Normal file
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@ -0,0 +1,15 @@
// cmpout
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build test_run
package main
import "../stdio"
func main() {
stdio.Stdout.WriteString(stdio.Greeting + "\n")
}

1
libgo/misc/cgo/stdio/hello.out Normal file
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@ -0,0 +1 @@
hello, world

150
libgo/misc/cgo/stdio/run.out Normal file
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@ -0,0 +1,150 @@
* hello
hello, world
* fib
0
1
1
2
3
5
8
13
21
34
55
89
144
233
377
610
987
1597
2584
4181
6765
10946
17711
28657
46368
75025
121393
196418
317811
514229
832040
1346269
2178309
3524578
5702887
9227465
14930352
24157817
39088169
63245986
102334155
165580141
267914296
433494437
701408733
1134903170
1836311903
2971215073
4807526976
7778742049
12586269025
20365011074
32951280099
53316291173
86267571272
139583862445
225851433717
365435296162
591286729879
956722026041
1548008755920
2504730781961
4052739537881
6557470319842
10610209857723
17167680177565
27777890035288
44945570212853
72723460248141
117669030460994
190392490709135
308061521170129
498454011879264
806515533049393
1304969544928657
2111485077978050
3416454622906707
5527939700884757
8944394323791464
14472334024676221
23416728348467685
37889062373143906
61305790721611591
99194853094755497
160500643816367088
259695496911122585
420196140727489673
679891637638612258
1100087778366101931
1779979416004714189
2880067194370816120
* chain
0
1
2
3
4
5
6
7
8
9
10
0
1
2
3
4
5
6
7
8
9
10
0
1
2
3
4
5
6
7
8
9
10
0
1
2
3
4
5
6
7
8
9
10
0
1
2
3
4
5
6
7
8
9
10

22
libgo/misc/cgo/stdio/stdio.go Normal file
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@ -0,0 +1,22 @@
// skip
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package stdio
/*
#include <stdio.h>
// on mingw, stderr and stdout are defined as &_iob[FILENO]
// on netbsd, they are defined as &__sF[FILENO]
// and cgo doesn't recognize them, so write a function to get them,
// instead of depending on internals of libc implementation.
FILE *getStdout(void) { return stdout; }
FILE *getStderr(void) { return stderr; }
*/
import "C"
var Stdout = (*File)(C.getStdout())
var Stderr = (*File)(C.getStderr())

76
libgo/misc/cgo/test/align.go Normal file
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@ -0,0 +1,76 @@
// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cgotest
/*
#include <stdio.h>
typedef unsigned char Uint8;
typedef unsigned short Uint16;
typedef enum {
MOD1 = 0x0000,
MODX = 0x8000
} SDLMod;
typedef enum {
A = 1,
B = 322,
SDLK_LAST
} SDLKey;
typedef struct SDL_keysym {
Uint8 scancode;
SDLKey sym;
SDLMod mod;
Uint16 unicode;
} SDL_keysym;
typedef struct SDL_KeyboardEvent {
Uint8 typ;
Uint8 which;
Uint8 state;
SDL_keysym keysym;
} SDL_KeyboardEvent;
void makeEvent(SDL_KeyboardEvent *event) {
unsigned char *p;
int i;
p = (unsigned char*)event;
for (i=0; i<sizeof *event; i++) {
p[i] = i;
}
}
int same(SDL_KeyboardEvent* e, Uint8 typ, Uint8 which, Uint8 state, Uint8 scan, SDLKey sym, SDLMod mod, Uint16 uni) {
return e->typ == typ && e->which == which && e->state == state && e->keysym.scancode == scan && e->keysym.sym == sym && e->keysym.mod == mod && e->keysym.unicode == uni;
}
void cTest(SDL_KeyboardEvent *event) {
printf("C: %#x %#x %#x %#x %#x %#x %#x\n", event->typ, event->which, event->state,
event->keysym.scancode, event->keysym.sym, event->keysym.mod, event->keysym.unicode);
fflush(stdout);
}
*/
import "C"
import (
"testing"
)
func testAlign(t *testing.T) {
var evt C.SDL_KeyboardEvent
C.makeEvent(&evt)
if C.same(&evt, evt.typ, evt.which, evt.state, evt.keysym.scancode, evt.keysym.sym, evt.keysym.mod, evt.keysym.unicode) == 0 {
t.Error("*** bad alignment")
C.cTest(&evt)
t.Errorf("Go: %#x %#x %#x %#x %#x %#x %#x\n",
evt.typ, evt.which, evt.state, evt.keysym.scancode,
evt.keysym.sym, evt.keysym.mod, evt.keysym.unicode)
t.Error(evt)
}
}

30
libgo/misc/cgo/test/api.go Normal file
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@ -0,0 +1,30 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// API Compatibility Checks for cgo
package cgotest
// #include <stdlib.h>
//
// // Test for issue 17723.
// typedef char *cstring_pointer;
// static void cstring_pointer_fun(cstring_pointer dummy) { }
//
// const char *api_hello = "hello!";
import "C"
import "unsafe"
func testAPI() {
var cs *C.char
cs = C.CString("hello")
defer C.free(unsafe.Pointer(cs))
var s string
s = C.GoString((*C.char)(C.api_hello))
s = C.GoStringN((*C.char)(C.api_hello), C.int(6))
var b []byte
b = C.GoBytes(unsafe.Pointer(C.api_hello), C.int(6))
_, _ = s, b
C.cstring_pointer_fun(nil)
}

11
libgo/misc/cgo/test/backdoor.go Normal file
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@ -0,0 +1,11 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cgotest
import _ "unsafe"
//go:linkname lockedOSThread runtime.lockedOSThread
//extern runtime_lockedOSThread
func lockedOSThread() bool

167
libgo/misc/cgo/test/basic.go Normal file
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@ -0,0 +1,167 @@
// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Basic test cases for cgo.
package cgotest
/*
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <errno.h>
#define SHIFT(x, y) ((x)<<(y))
#define KILO SHIFT(1, 10)
#define UINT32VAL 0xc008427bU
enum E {
Enum1 = 1,
Enum2 = 2,
};
typedef unsigned char cgo_uuid_t[20];
void uuid_generate(cgo_uuid_t x) {
x[0] = 0;
}
struct S {
int x;
};
extern enum E myConstFunc(struct S* const ctx, int const id, struct S **const filter);
enum E myConstFunc(struct S *const ctx, int const id, struct S **const filter) { return 0; }
// issue 1222
typedef union {
long align;
} xxpthread_mutex_t;
struct ibv_async_event {
union {
int x;
} element;
};
struct ibv_context {
xxpthread_mutex_t mutex;
};
int add(int x, int y) {
return x+y;
};
*/
import "C"
import (
"runtime"
"syscall"
"testing"
"unsafe"
)
const EINVAL = C.EINVAL /* test #define */
var KILO = C.KILO
func uuidgen() {
var uuid C.cgo_uuid_t
C.uuid_generate(&uuid[0])
}
func Strtol(s string, base int) (int, error) {
p := C.CString(s)
n, err := C.strtol(p, nil, C.int(base))
C.free(unsafe.Pointer(p))
return int(n), err
}
func Atol(s string) int {
p := C.CString(s)
n := C.atol(p)
C.free(unsafe.Pointer(p))
return int(n)
}
func testConst(t *testing.T) {
C.myConstFunc(nil, 0, nil)
}
func testEnum(t *testing.T) {
if C.Enum1 != 1 || C.Enum2 != 2 {
t.Error("bad enum", C.Enum1, C.Enum2)
}
}
func testAtol(t *testing.T) {
l := Atol("123")
if l != 123 {
t.Error("Atol 123: ", l)
}
}
func testErrno(t *testing.T) {
p := C.CString("no-such-file")
m := C.CString("r")
f, err := C.fopen(p, m)
C.free(unsafe.Pointer(p))
C.free(unsafe.Pointer(m))
if err == nil {
C.fclose(f)
t.Fatalf("C.fopen: should fail")
}
if err != syscall.ENOENT {
t.Fatalf("C.fopen: unexpected error: %v", err)
}
}
func testMultipleAssign(t *testing.T) {
p := C.CString("234")
n, m := C.strtol(p, nil, 345), C.strtol(p, nil, 10)
if runtime.GOOS == "openbsd" {
// Bug in OpenBSD strtol(3) - base > 36 succeeds.
if (n != 0 && n != 239089) || m != 234 {
t.Fatal("Strtol x2: ", n, m)
}
} else if n != 0 || m != 234 {
t.Fatal("Strtol x2: ", n, m)
}
C.free(unsafe.Pointer(p))
}
var (
cuint = (C.uint)(0)
culong C.ulong
cchar C.char
)
type Context struct {
ctx *C.struct_ibv_context
}
func benchCgoCall(b *testing.B) {
const x = C.int(2)
const y = C.int(3)
for i := 0; i < b.N; i++ {
C.add(x, y)
}
}
// Issue 2470.
func testUnsignedInt(t *testing.T) {
a := (int64)(C.UINT32VAL)
b := (int64)(0xc008427b)
if a != b {
t.Errorf("Incorrect unsigned int - got %x, want %x", a, b)
}
}
// Static (build-time) test that syntax traversal visits all operands of s[i:j:k].
func sliceOperands(array [2000]int) {
_ = array[C.KILO:C.KILO:C.KILO] // no type error
}
// set in cgo_thread_lock.go init
var testThreadLockFunc = func(*testing.T) {}

77
libgo/misc/cgo/test/buildid_linux.go Normal file
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@ -0,0 +1,77 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cgotest
// Test that we have no more than one build ID. In the past we used
// to generate a separate build ID for each package using cgo, and the
// linker concatenated them all. We don't want that--we only want
// one.
import (
"bytes"
"debug/elf"
"os"
"testing"
)
func testBuildID(t *testing.T) {
f, err := elf.Open("/proc/self/exe")
if err != nil {
if os.IsNotExist(err) {
t.Skip("no /proc/self/exe")
}
t.Fatal("opening /proc/self/exe: ", err)
}
defer f.Close()
c := 0
for i, s := range f.Sections {
if s.Type != elf.SHT_NOTE {
continue
}
d, err := s.Data()
if err != nil {
t.Logf("reading data of note section %d: %v", i, err)
continue
}
for len(d) > 0 {
// ELF standards differ as to the sizes in
// note sections. Both the GNU linker and
// gold always generate 32-bit sizes, so that
// is what we assume here.
if len(d) < 12 {
t.Logf("note section %d too short (%d < 12)", i, len(d))
continue
}
namesz := f.ByteOrder.Uint32(d)
descsz := f.ByteOrder.Uint32(d[4:])
typ := f.ByteOrder.Uint32(d[8:])
an := (namesz + 3) &^ 3
ad := (descsz + 3) &^ 3
if int(12+an+ad) > len(d) {
t.Logf("note section %d too short for header (%d < 12 + align(%d,4) + align(%d,4))", i, len(d), namesz, descsz)
continue
}
// 3 == NT_GNU_BUILD_ID
if typ == 3 && namesz == 4 && bytes.Equal(d[12:16], []byte("GNU\000")) {
c++
}
d = d[12+an+ad:]
}
}
if c > 1 {
t.Errorf("found %d build ID notes", c)
}
}

1782
libgo/misc/cgo/test/callback.go Normal file
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90
libgo/misc/cgo/test/callback_c.c Normal file
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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include "_cgo_export.h"
void
callback(void *f)
{
// use some stack space
volatile char data[64*1024];
data[0] = 0;
goCallback(f);
data[sizeof(data)-1] = 0;
}
void
callGoFoo(void)
{
extern void goFoo(void);
goFoo();
}
void
IntoC(void)
{
BackIntoGo();
}
#ifdef WIN32
#include <windows.h>
long long
mysleep(int seconds) {
long long st = GetTickCount();
Sleep(1000 * seconds);
return st;
}
#else
#include <sys/time.h>
long long
mysleep(int seconds) {
long long st;
struct timeval tv;
gettimeofday(&tv, NULL);
st = tv.tv_sec * 1000 + tv.tv_usec / 1000;
sleep(seconds);
return st;
}
#endif
long long
twoSleep(int n)
{
BackgroundSleep(n);
return mysleep(n);
}
void
callGoStackCheck(void)
{
extern void goStackCheck(void);
goStackCheck();
}
int
returnAfterGrow(void)
{
extern int goReturnVal(void);
goReturnVal();
return 123456;
}
int
returnAfterGrowFromGo(void)
{
extern int goReturnVal(void);
return goReturnVal();
}
void
callGoWithString(void)
{
extern void goWithString(GoString);
const char *str = "string passed from C to Go";
goWithString((GoString){str, strlen(str)});
}

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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build gc
#include "_cgo_export.h"
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
/* Test calling panic from C. This is what SWIG does. */
extern void crosscall2(void (*fn)(void *, int), void *, int);
extern void _cgo_panic(void *, int);
extern void _cgo_allocate(void *, int);
void
callPanic(void)
{
struct { const char *p; } a;
a.p = "panic from C";
crosscall2(_cgo_panic, &a, sizeof a);
*(int*)1 = 1;
}

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libgo/misc/cgo/test/callback_c_gccgo.c Normal file
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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build gccgo
#include "_cgo_export.h"
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
/* Test calling panic from C. This is what SWIG does. */
extern void _cgo_panic(const char *);
extern void *_cgo_allocate(size_t);
void
callPanic(void)
{
_cgo_panic("panic from C");
}

32
libgo/misc/cgo/test/cflags.go Normal file
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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Test that the #cgo CFLAGS directive works,
// with and without platform filters.
// See https://golang.org/issue/5224 for details.
package cgotest
/*
#cgo CFLAGS: -DCOMMON_VALUE=123
#cgo windows CFLAGS: -DIS_WINDOWS=1
#cgo !windows CFLAGS: -DIS_WINDOWS=0
int common = COMMON_VALUE;
int is_windows = IS_WINDOWS;
*/
import "C"
import (
"runtime"
"testing"
)
func testCflags(t *testing.T) {
is_windows := C.is_windows == 1
if is_windows != (runtime.GOOS == "windows") {
t.Errorf("is_windows: %v, runtime.GOOS: %s", is_windows, runtime.GOOS)
}
if C.common != 123 {
t.Errorf("common: %v (expected 123)", C.common)
}
}

12
libgo/misc/cgo/test/cgo_linux_test.go Normal file
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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cgotest
import "testing"
func TestSetgid(t *testing.T) { testSetgid(t) }
func Test6997(t *testing.T) { test6997(t) }
func TestBuildID(t *testing.T) { testBuildID(t) }
func Test9400(t *testing.T) { test9400(t) }

13
libgo/misc/cgo/test/cgo_stubs_android_test.go Normal file
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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cgotest
import "testing"
// Stubs for tests that fails to build on Android
func test6997(t *testing.T) {}
func test3775(t *testing.T) {}
func test8694(t *testing.T) {}
func testSigaltstack(t *testing.T) {}

80
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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cgotest
import "testing"
// The actual test functions are in non-_test.go files
// so that they can use cgo (import "C").
// These wrappers are here for gotest to find.
func TestAlign(t *testing.T) { testAlign(t) }
func TestConst(t *testing.T) { testConst(t) }
func TestEnum(t *testing.T) { testEnum(t) }
func TestAtol(t *testing.T) { testAtol(t) }
func TestErrno(t *testing.T) { testErrno(t) }
func TestMultipleAssign(t *testing.T) { testMultipleAssign(t) }
func TestUnsignedInt(t *testing.T) { testUnsignedInt(t) }
func TestCallback(t *testing.T) { testCallback(t) }
func TestCallbackGC(t *testing.T) { testCallbackGC(t) }
func TestCallbackPanic(t *testing.T) { testCallbackPanic(t) }
func TestCallbackPanicLoop(t *testing.T) { testCallbackPanicLoop(t) }
func TestCallbackPanicLocked(t *testing.T) { testCallbackPanicLocked(t) }
func TestPanicFromC(t *testing.T) { testPanicFromC(t) }
func TestZeroArgCallback(t *testing.T) { testZeroArgCallback(t) }
func TestBlocking(t *testing.T) { testBlocking(t) }
func Test1328(t *testing.T) { test1328(t) }
func TestParallelSleep(t *testing.T) { testParallelSleep(t) }
func TestSetEnv(t *testing.T) { testSetEnv(t) }
func TestHelpers(t *testing.T) { testHelpers(t) }
func TestLibgcc(t *testing.T) { testLibgcc(t) }
func Test1635(t *testing.T) { test1635(t) }
func TestPrintf(t *testing.T) { testPrintf(t) }
func Test4029(t *testing.T) { test4029(t) }
func TestBoolAlign(t *testing.T) { testBoolAlign(t) }
func Test3729(t *testing.T) { test3729(t) }
func Test3775(t *testing.T) { test3775(t) }
func TestCthread(t *testing.T) { testCthread(t) }
func TestCallbackCallers(t *testing.T) { testCallbackCallers(t) }
func Test5227(t *testing.T) { test5227(t) }
func TestCflags(t *testing.T) { testCflags(t) }
func Test5337(t *testing.T) { test5337(t) }
func Test5548(t *testing.T) { test5548(t) }
func Test5603(t *testing.T) { test5603(t) }
func Test6833(t *testing.T) { test6833(t) }
func Test3250(t *testing.T) { test3250(t) }
func TestCallbackStack(t *testing.T) { testCallbackStack(t) }
func TestFpVar(t *testing.T) { testFpVar(t) }
func Test4339(t *testing.T) { test4339(t) }
func Test6390(t *testing.T) { test6390(t) }
func Test5986(t *testing.T) { test5986(t) }
func Test7665(t *testing.T) { test7665(t) }
func TestNaming(t *testing.T) { testNaming(t) }
func Test7560(t *testing.T) { test7560(t) }
func Test5242(t *testing.T) { test5242(t) }
func Test8092(t *testing.T) { test8092(t) }
func Test7978(t *testing.T) { test7978(t) }
func Test8694(t *testing.T) { test8694(t) }
func Test8517(t *testing.T) { test8517(t) }
func Test8811(t *testing.T) { test8811(t) }
func TestReturnAfterGrow(t *testing.T) { testReturnAfterGrow(t) }
func TestReturnAfterGrowFromGo(t *testing.T) { testReturnAfterGrowFromGo(t) }
func Test9026(t *testing.T) { test9026(t) }
func Test9510(t *testing.T) { test9510(t) }
func Test9557(t *testing.T) { test9557(t) }
func Test10303(t *testing.T) { test10303(t, 10) }
func Test11925(t *testing.T) { test11925(t) }
func Test12030(t *testing.T) { test12030(t) }
func TestGCC68255(t *testing.T) { testGCC68255(t) }
func TestCallGoWithString(t *testing.T) { testCallGoWithString(t) }
func Test14838(t *testing.T) { test14838(t) }
func Test8756(t *testing.T) { test8756(t) }
func Test17065(t *testing.T) { test17065(t) }
func TestThreadLock(t *testing.T) { testThreadLockFunc(t) }
func TestCheckConst(t *testing.T) { testCheckConst(t) }
func Test17537(t *testing.T) { test17537(t) }
func Test18126(t *testing.T) { test18126(t) }
func BenchmarkCgoCall(b *testing.B) { benchCgoCall(b) }

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// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build linux,freebsd,openbsd
package cgotest
/*
#include <unistd.h>
#include <sys/syscall.h>
void Gosched(void);
static int Ctid(void) { Gosched(); return syscall(SYS_gettid); }
*/
import "C"
import (
"runtime"
"syscall"
"testing"
"time"
)
//export Gosched
func Gosched() {
runtime.Gosched()
}
func init() {
testThreadLockFunc = testThreadLock
}
func testThreadLock(t *testing.T) {
stop := make(chan int)
go func() {
// We need the G continue running,
// so the M has a chance to run this G.
for {
select {
case <-stop:
return
case <-time.After(time.Millisecond * 100):
}
}
}()
defer close(stop)
for i := 0; i < 1000; i++ {
if C.int(syscall.Gettid()) != C.Ctid() {
t.Fatalf("cgo has not locked OS thread")
}
}
}

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libgo/misc/cgo/test/cgo_unix_test.go Normal file
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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build !windows
package cgotest
import "testing"
func TestSigaltstack(t *testing.T) { testSigaltstack(t) }
func TestSigprocmask(t *testing.T) { testSigprocmask(t) }
func Test18146(t *testing.T) { test18146(t) }

33
libgo/misc/cgo/test/checkconst.go Normal file
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// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Test a constant in conjunction with pointer checking.
package cgotest
/*
#include <stdlib.h>
#define CheckConstVal 0
typedef struct {
int *p;
} CheckConstStruct;
static void CheckConstFunc(CheckConstStruct *p, int e) {
}
*/
import "C"
import (
"testing"
"unsafe"
)
func testCheckConst(t *testing.T) {
// The test is that this compiles successfully.
p := C.malloc(C.size_t(unsafe.Sizeof(C.int(0))))
defer C.free(p)
C.CheckConstFunc(&C.CheckConstStruct{(*C.int)(p)}, C.CheckConstVal)
}

24
libgo/misc/cgo/test/complex.go Normal file
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// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cgotest
/*
struct {
float x;
_Complex float y;
} cplxAlign = { 3.14, 2.17 };
*/
import "C"
import "testing"
func TestComplexAlign(t *testing.T) {
if C.cplxAlign.x != 3.14 {
t.Errorf("got %v, expected 3.14", C.cplxAlign.x)
}
if C.cplxAlign.y != 2.17 {
t.Errorf("got %v, expected 2.17", C.cplxAlign.y)
}
}

44
libgo/misc/cgo/test/cthread.go Normal file
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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cgotest
// extern void doAdd(int, int);
import "C"
import (
"runtime"
"sync"
"testing"
)
var sum struct {
sync.Mutex
i int
}
//export Add
func Add(x int) {
defer func() {
recover()
}()
sum.Lock()
sum.i += x
sum.Unlock()
var p *int
*p = 2
}
func testCthread(t *testing.T) {
if runtime.GOOS == "darwin" && (runtime.GOARCH == "arm" || runtime.GOARCH == "arm64") {
t.Skip("the iOS exec wrapper is unable to properly handle the panic from Add")
}
sum.i = 0
C.doAdd(10, 6)
want := 10 * (10 - 1) / 2 * 6
if sum.i != want {
t.Fatalf("sum=%d, want %d", sum.i, want)
}
}

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libgo/misc/cgo/test/cthread_unix.c Normal file
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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin dragonfly freebsd linux netbsd openbsd solaris
#include <pthread.h>
#include "_cgo_export.h"
static void*
addThread(void *p)
{
int i, max;
max = *(int*)p;
for(i=0; i<max; i++)
Add(i);
return 0;
}
void
doAdd(int max, int nthread)
{
enum { MaxThread = 20 };
int i;
pthread_t thread_id[MaxThread];
if(nthread > MaxThread)
nthread = MaxThread;
for(i=0; i<nthread; i++)
pthread_create(&thread_id[i], 0, addThread, &max);
for(i=0; i<nthread; i++)
pthread_join(thread_id[i], 0);
}

37
libgo/misc/cgo/test/cthread_windows.c Normal file
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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <process.h>
#include "_cgo_export.h"
__stdcall
static unsigned int
addThread(void *p)
{
int i, max;
max = *(int*)p;
for(i=0; i<max; i++)
Add(i);
return 0;
}
void
doAdd(int max, int nthread)
{
enum { MaxThread = 20 };
int i;
uintptr_t thread_id[MaxThread];
if(nthread > MaxThread)
nthread = MaxThread;
for(i=0; i<nthread; i++)
thread_id[i] = _beginthreadex(0, 0, addThread, &max, 0, 0);
for(i=0; i<nthread; i++) {
WaitForSingleObject((HANDLE)thread_id[i], INFINITE);
CloseHandle((HANDLE)thread_id[i]);
}
}

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libgo/misc/cgo/test/duplicate_symbol.go Normal file
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// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// This file contains test cases for cgo.
package cgotest
/*
int base_symbol = 0;
#define alias_one base_symbol
#define alias_two base_symbol
*/
import "C"
import "fmt"
func duplicateSymbols() {
fmt.Printf("%v %v %v\n", C.base_symbol, C.alias_one, C.alias_two)
}

41
libgo/misc/cgo/test/env.go Normal file
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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cgotest
/*
#include <stdlib.h>
*/
import "C"
import (
"os"
"runtime"
"testing"
"unsafe"
)
// This is really an os package test but here for convenience.
func testSetEnv(t *testing.T) {
if runtime.GOOS == "windows" {
// Go uses SetEnvironmentVariable on windows. Howerver,
// C runtime takes a *copy* at process startup of thei
// OS environment, and stores it in environ/envp.
// It is this copy that getenv/putenv manipulate.
t.Logf("skipping test")
return
}
const key = "CGO_OS_TEST_KEY"
const val = "CGO_OS_TEST_VALUE"
os.Setenv(key, val)
keyc := C.CString(key)
defer C.free(unsafe.Pointer(keyc))
v := C.getenv(keyc)
if uintptr(unsafe.Pointer(v)) == 0 {
t.Fatal("getenv returned NULL")
}
vs := C.GoString(v)
if vs != val {
t.Fatalf("getenv() = %q; want %q", vs, val)
}
}

18
libgo/misc/cgo/test/exports.go Normal file
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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cgotest
import "C"
import "runtime"
//export ReturnIntLong
func ReturnIntLong() (int, C.long) {
return 1, 2
}
//export gc
func gc() {
runtime.GC()
}

50
libgo/misc/cgo/test/fpvar.go Normal file
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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// This file contains test cases for cgo with function pointer variables.
package cgotest
/*
typedef int (*intFunc) ();
int
bridge_int_func(intFunc f)
{
return f();
}
int fortytwo()
{
return 42;
}
*/
import "C"
import "testing"
func callBridge(f C.intFunc) int {
return int(C.bridge_int_func(f))
}
func callCBridge(f C.intFunc) C.int {
return C.bridge_int_func(f)
}
func testFpVar(t *testing.T) {
const expected = 42
f := C.intFunc(C.fortytwo)
res1 := C.bridge_int_func(f)
if r1 := int(res1); r1 != expected {
t.Errorf("got %d, want %d", r1, expected)
}
res2 := callCBridge(f)
if r2 := int(res2); r2 != expected {
t.Errorf("got %d, want %d", r2, expected)
}
r3 := callBridge(f)
if r3 != expected {
t.Errorf("got %d, want %d", r3, expected)
}
}

17
libgo/misc/cgo/test/gcc68255.go Normal file
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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cgotest
import (
"testing"
"./gcc68255"
)
func testGCC68255(t *testing.T) {
if !gcc68255.F() {
t.Error("C global variable was not initialized")
}
}

17
libgo/misc/cgo/test/gcc68255/a.go Normal file
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@ -0,0 +1,17 @@
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Test that it's OK to have C code that does nothing other than
// initialize a global variable. This used to fail with gccgo.
package gcc68255
/*
#include "c.h"
*/
import "C"
func F() bool {
return C.v != nil
}

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libgo/misc/cgo/test/gcc68255/c.c Normal file
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@ -0,0 +1,8 @@
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
static void f(void) {
}
void (*v)(void) = f;

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libgo/misc/cgo/test/gcc68255/c.h Normal file
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@ -0,0 +1,5 @@
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
extern void (*v)(void);

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libgo/misc/cgo/test/helpers.go Normal file
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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cgotest
// const char *greeting = "hello, world";
import "C"
import (
"reflect"
"testing"
"unsafe"
)
const greeting = "hello, world"
type testPair struct {
Name string
Got, Want interface{}
}
var testPairs = []testPair{
{"GoString", C.GoString(C.greeting), greeting},
{"GoStringN", C.GoStringN(C.greeting, 5), greeting[:5]},
{"GoBytes", C.GoBytes(unsafe.Pointer(C.greeting), 5), []byte(greeting[:5])},
}
func testHelpers(t *testing.T) {
for _, pair := range testPairs {
if !reflect.DeepEqual(pair.Got, pair.Want) {
t.Errorf("%s: got %#v, want %#v", pair.Name, pair.Got, pair.Want)
}
}
}

76
libgo/misc/cgo/test/issue10303.go Normal file
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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Issue 10303. Pointers passed to C were not marked as escaping (bug in cgo).
package cgotest
import "runtime"
/*
typedef int *intptr;
void setintstar(int *x) {
*x = 1;
}
void setintptr(intptr x) {
*x = 1;
}
void setvoidptr(void *x) {
*(int*)x = 1;
}
typedef struct Struct Struct;
struct Struct {
int *P;
};
void setstruct(Struct s) {
*s.P = 1;
}
*/
import "C"
import (
"testing"
"unsafe"
)
func test10303(t *testing.T, n int) {
if runtime.Compiler == "gccgo" {
t.Skip("gccgo permits C pointers on the stack")
}
// Run at a few different stack depths just to avoid an unlucky pass
// due to variables ending up on different pages.
if n > 0 {
test10303(t, n-1)
}
if t.Failed() {
return
}
var x, y, z, v, si C.int
var s C.Struct
C.setintstar(&x)
C.setintptr(&y)
C.setvoidptr(unsafe.Pointer(&v))
s.P = &si
C.setstruct(s)
if uintptr(unsafe.Pointer(&x))&^0xfff == uintptr(unsafe.Pointer(&z))&^0xfff {
t.Error("C int* argument on stack")
}
if uintptr(unsafe.Pointer(&y))&^0xfff == uintptr(unsafe.Pointer(&z))&^0xfff {
t.Error("C intptr argument on stack")
}
if uintptr(unsafe.Pointer(&v))&^0xfff == uintptr(unsafe.Pointer(&z))&^0xfff {
t.Error("C void* argument on stack")
}
if uintptr(unsafe.Pointer(&si))&^0xfff == uintptr(unsafe.Pointer(&z))&^0xfff {
t.Error("C struct field pointer on stack")
}
}

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libgo/misc/cgo/test/issue11925.go Normal file
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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Issue 11925. Structs with zero-length trailing fields are now
// padded by the Go compiler.
package cgotest
/*
struct a11925 {
int i;
char a[0];
char b[0];
};
struct b11925 {
int i;
char a[0];
char b[];
};
*/
import "C"
import (
"testing"
"unsafe"
)
func test11925(t *testing.T) {
if C.sizeof_struct_a11925 != unsafe.Sizeof(C.struct_a11925{}) {
t.Errorf("size of a changed: C %d, Go %d", C.sizeof_struct_a11925, unsafe.Sizeof(C.struct_a11925{}))
}
if C.sizeof_struct_b11925 != unsafe.Sizeof(C.struct_b11925{}) {
t.Errorf("size of b changed: C %d, Go %d", C.sizeof_struct_b11925, unsafe.Sizeof(C.struct_b11925{}))
}
}

35
libgo/misc/cgo/test/issue12030.go Normal file
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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Issue 12030. sprintf is defined in both ntdll and msvcrt,
// Normally we want the one in the msvcrt.
package cgotest
/*
#include <stdio.h>
#include <stdlib.h>
void issue12030conv(char *buf, double x) {
sprintf(buf, "d=%g", x);
}
*/
import "C"
import (
"fmt"
"testing"
"unsafe"
)
func test12030(t *testing.T) {
buf := (*C.char)(C.malloc(256))
defer C.free(unsafe.Pointer(buf))
for _, f := range []float64{1.0, 2.0, 3.14} {
C.issue12030conv(buf, C.double(f))
got := C.GoString(buf)
if want := fmt.Sprintf("d=%g", f); got != want {
t.Fatalf("C.sprintf failed for %g: %q != %q", f, got, want)
}
}
}

29
libgo/misc/cgo/test/issue1222.go Normal file
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// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// This file contains test cases for cgo.
package cgotest
/*
// issue 1222
typedef union {
long align;
} xxpthread_mutex_t;
struct ibv_async_event {
union {
int x;
} element;
};
struct ibv_context {
xxpthread_mutex_t mutex;
};
*/
import "C"
type AsyncEvent struct {
event C.struct_ibv_async_event
}

30
libgo/misc/cgo/test/issue1328.go Normal file
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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cgotest
import "testing"
// extern void BackIntoGo(void);
// void IntoC(void);
import "C"
//export BackIntoGo
func BackIntoGo() {
x := 1
for i := 0; i < 10000; i++ {
xvariadic(x)
if x != 1 {
panic("x is not 1?")
}
}
}
func xvariadic(x ...interface{}) {
}
func test1328(t *testing.T) {
C.IntoC()
}

10
libgo/misc/cgo/test/issue13402.go Normal file
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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cgotest
import "C"
var _ C.complexfloat
var _ C.complexdouble

13
libgo/misc/cgo/test/issue13930.go Normal file
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// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Issue 13930. Test that cgo's multiple-value special form for
// C function calls works in variable declaration statements.
package cgotest
// #include <stdlib.h>
import "C"
var _, _ = C.abs(0)

37
libgo/misc/cgo/test/issue14838.go Normal file
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// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Issue 14838. add CBytes function
package cgotest
/*
#include <stdlib.h>
int check_cbytes(char *b, size_t l) {
int i;
for (i = 0; i < l; i++) {
if (b[i] != i) {
return 0;
}
}
return 1;
}
*/
import "C"
import (
"testing"
"unsafe"
)
func test14838(t *testing.T) {
data := []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}
cData := C.CBytes(data)
defer C.free(cData)
if C.check_cbytes((*C.char)(cData), C.size_t(len(data))) == 0 {
t.Fatalf("mismatched data: expected %v, got %v", data, (*(*[10]byte)(unsafe.Pointer(cData)))[:])
}
}

50
libgo/misc/cgo/test/issue1560.go Normal file
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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cgotest
/*
// mysleep returns the absolute start time in ms.
long long mysleep(int seconds);
// twoSleep returns the absolute start time of the first sleep
// in ms.
long long twoSleep(int);
*/
import "C"
import (
"testing"
"time"
)
var sleepDone = make(chan int64)
// parallelSleep returns the absolute difference between the start time
// of the two sleeps.
func parallelSleep(n int) int64 {
t := int64(C.twoSleep(C.int(n))) - <-sleepDone
if t < 0 {
return -t
}
return t
}
//export BackgroundSleep
func BackgroundSleep(n int32) {
go func() {
sleepDone <- int64(C.mysleep(C.int(n)))
}()
}
func testParallelSleep(t *testing.T) {
sleepSec := 1
dt := time.Duration(parallelSleep(sleepSec)) * time.Millisecond
t.Logf("difference in start time for two sleep(%d) is %v", sleepSec, dt)
// bug used to run sleeps in serial, producing a 2*sleepSec-second delay.
// we detect if the start times of those sleeps are > 0.5*sleepSec-second.
if dt >= time.Duration(sleepSec)*time.Second/2 {
t.Fatalf("parallel %d-second sleeps slept for %f seconds", sleepSec, dt.Seconds())
}
}

38
libgo/misc/cgo/test/issue1635.go Normal file
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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cgotest
/*
// Mac OS X's gcc will generate scattered relocation 2/1 for
// this function on Darwin/386, and 8l couldn't handle it.
// this example is in issue 1635
#include <stdio.h>
void scatter() {
void *p = scatter;
printf("scatter = %p\n", p);
}
// Adding this explicit extern declaration makes this a test for
// https://gcc.gnu.org/PR68072 aka https://golang.org/issue/13344 .
// It used to cause a cgo error when building with GCC 6.
extern int hola;
// this example is in issue 3253
int hola = 0;
int testHola() { return hola; }
*/
import "C"
import "testing"
func test1635(t *testing.T) {
C.scatter()
if v := C.hola; v != 0 {
t.Fatalf("C.hola is %d, should be 0", v)
}
if v := C.testHola(); v != 0 {
t.Fatalf("C.testHola() is %d, should be 0", v)
}
}

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libgo/misc/cgo/test/issue17065.go Normal file
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// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cgotest
/*
// Test that C symbols larger than a page play nicely with the race detector.
// See issue 17065.
int ii[65537];
*/
import "C"
import (
"runtime"
"testing"
)
var sink C.int
func test17065(t *testing.T) {
if runtime.GOOS == "darwin" {
t.Skip("broken on darwin; issue 17065")
}
for i := range C.ii {
sink = C.ii[i]
}
}

58
libgo/misc/cgo/test/issue17537.go Normal file
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// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Issue 17537. The void* cast introduced by cgo to avoid problems
// with const/volatile qualifiers breaks C preprocessor macros that
// emulate functions.
package cgotest
/*
#include <stdlib.h>
typedef struct {
int i;
} S17537;
int I17537(S17537 *p);
#define I17537(p) ((p)->i)
// Calling this function used to fail without the cast.
const int F17537(const char **p) {
return **p;
}
// Calling this function used to trigger an error from the C compiler
// (issue 18298).
void F18298(const void *const *p) {
}
// Test that conversions between typedefs work as they used to.
typedef const void *T18298_1;
struct S18298 { int i; };
typedef const struct S18298 *T18298_2;
void G18298(T18298_1 t) {
}
*/
import "C"
import "testing"
func test17537(t *testing.T) {
v := C.S17537{i: 17537}
if got, want := C.I17537(&v), C.int(17537); got != want {
t.Errorf("got %d, want %d", got, want)
}
p := (*C.char)(C.malloc(1))
*p = 17
if got, want := C.F17537(&p), C.int(17); got != want {
t.Errorf("got %d, want %d", got, want)
}
C.F18298(nil)
var v18298 C.T18298_2
C.G18298(C.T18298_1(v18298))
}

26
libgo/misc/cgo/test/issue18126.go Normal file
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// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Issue 18126: cgo check of void function returning errno.
package cgotest
/*
#include <stdlib.h>
void Issue18126C(void **p) {
}
*/
import "C"
import (
"testing"
)
func test18126(t *testing.T) {
p := C.malloc(1)
_, err := C.Issue18126C(&p)
C.free(p)
_ = err
}

128
libgo/misc/cgo/test/issue18146.go Normal file
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// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build !windows
// Issue 18146: pthread_create failure during syscall.Exec.
package cgotest
import "C"
import (
"bytes"
"crypto/md5"
"os"
"os/exec"
"runtime"
"syscall"
"testing"
"time"
)
func test18146(t *testing.T) {
if runtime.GOOS == "darwin" {
t.Skipf("skipping flaky test on %s; see golang.org/issue/18202", runtime.GOOS)
}
if runtime.GOARCH == "mips" || runtime.GOARCH == "mips64" {
t.Skipf("skipping on %s", runtime.GOARCH)
}
attempts := 1000
threads := 4
if testing.Short() {
attempts = 100
}
// Restrict the number of attempts based on RLIMIT_NPROC.
// Tediously, RLIMIT_NPROC was left out of the syscall package,
// probably because it is not in POSIX.1, so we define it here.
// It is not defined on Solaris.
var nproc int
setNproc := true
switch runtime.GOOS {
default:
setNproc = false
case "linux":
nproc = 6
case "darwin", "dragonfly", "freebsd", "netbsd", "openbsd":
nproc = 7
}
if setNproc {
var rlim syscall.Rlimit
if syscall.Getrlimit(nproc, &rlim) == nil {
max := int(rlim.Cur) / (threads + 5)
if attempts > max {
t.Logf("lowering attempts from %d to %d for RLIMIT_NPROC", attempts, max)
attempts = max
}
}
}
if os.Getenv("test18146") == "exec" {
runtime.GOMAXPROCS(1)
for n := threads; n > 0; n-- {
go func() {
for {
_ = md5.Sum([]byte("Hello, !"))
}
}()
}
runtime.GOMAXPROCS(threads)
argv := append(os.Args, "-test.run=NoSuchTestExists")
if err := syscall.Exec(os.Args[0], argv, os.Environ()); err != nil {
t.Fatal(err)
}
}
var cmds []*exec.Cmd
defer func() {
for _, cmd := range cmds {
cmd.Process.Kill()
}
}()
args := append(append([]string(nil), os.Args[1:]...), "-test.run=Test18146")
for n := attempts; n > 0; n-- {
cmd := exec.Command(os.Args[0], args...)
cmd.Env = append(os.Environ(), "test18146=exec")
buf := bytes.NewBuffer(nil)
cmd.Stdout = buf
cmd.Stderr = buf
if err := cmd.Start(); err != nil {
// We are starting so many processes that on
// some systems (problem seen on Darwin,
// Dragonfly, OpenBSD) the fork call will fail
// with EAGAIN.
if pe, ok := err.(*os.PathError); ok {
err = pe.Err
}
if se, ok := err.(syscall.Errno); ok && (se == syscall.EAGAIN || se == syscall.EMFILE) {
time.Sleep(time.Millisecond)
continue
}
t.Error(err)
return
}
cmds = append(cmds, cmd)
}
failures := 0
for _, cmd := range cmds {
err := cmd.Wait()
if err == nil {
continue
}
t.Errorf("syscall.Exec failed: %v\n%s", err, cmd.Stdout)
failures++
}
if failures > 0 {
t.Logf("Failed %v of %v attempts.", failures, len(cmds))
}
}

102
libgo/misc/cgo/test/issue2462.go Normal file
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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cgotest
import "C"
//export exportbyte
func exportbyte() byte {
return 0
}
//export exportbool
func exportbool() bool {
return false
}
//export exportrune
func exportrune() rune {
return 0
}
//export exporterror
func exporterror() error {
return nil
}
//export exportint
func exportint() int {
return 0
}
//export exportuint
func exportuint() uint {
return 0
}
//export exportuintptr
func exportuintptr() uintptr {
return (uintptr)(0)
}
//export exportint8
func exportint8() int8 {
return 0
}
//export exportuint8
func exportuint8() uint8 {
return 0
}
//export exportint16
func exportint16() int16 {
return 0
}
//export exportuint16
func exportuint16() uint16 {
return 0
}
//export exportint32
func exportint32() int32 {
return 0
}
//export exportuint32
func exportuint32() uint32 {
return 0
}
//export exportint64
func exportint64() int64 {
return 0
}
//export exportuint64
func exportuint64() uint64 {
return 0
}
//export exportfloat32
func exportfloat32() float32 {
return 0
}
//export exportfloat64
func exportfloat64() float64 {
return 0
}
//export exportcomplex64
func exportcomplex64() complex64 {
return 0
}
//export exportcomplex128
func exportcomplex128() complex128 {
return 0
}

95
libgo/misc/cgo/test/issue3250.go Normal file
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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build !windows
package cgotest
/*
#include <signal.h>
#include <pthread.h>
#include <unistd.h>
#include <stdlib.h>
static void *thread(void *p) {
const int M = 100;
int i;
(void)p;
for (i = 0; i < M; i++) {
pthread_kill(pthread_self(), SIGCHLD);
usleep(rand() % 20 + 5);
}
return NULL;
}
void testSendSIG() {
const int N = 20;
int i;
pthread_t tid[N];
for (i = 0; i < N; i++) {
usleep(rand() % 200 + 100);
pthread_create(&tid[i], 0, thread, NULL);
}
for (i = 0; i < N; i++)
pthread_join(tid[i], 0);
}
*/
import "C"
import (
"os"
"os/signal"
"syscall"
"testing"
"time"
)
func test3250(t *testing.T) {
t.Skip("skipped, see golang.org/issue/5885")
const (
thres = 1
sig = syscall.SIGCHLD
)
type result struct {
n int
sig os.Signal
}
var (
sigCh = make(chan os.Signal, 10)
waitStart = make(chan struct{})
waitDone = make(chan result)
)
signal.Notify(sigCh, sig)
go func() {
n := 0
alarm := time.After(time.Second * 3)
for {
select {
case <-waitStart:
waitStart = nil
case v := <-sigCh:
n++
if v != sig || n > thres {
waitDone <- result{n, v}
return
}
case <-alarm:
waitDone <- result{n, sig}
return
}
}
}()
waitStart <- struct{}{}
C.testSendSIG()
r := <-waitDone
if r.sig != sig {
t.Fatalf("received signal %v, but want %v", r.sig, sig)
}
t.Logf("got %d signals\n", r.n)
if r.n <= thres {
t.Fatalf("expected more than %d", thres)
}
}

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libgo/misc/cgo/test/issue3250w.go Normal file
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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build windows
package cgotest
import "testing"
func test3250(t *testing.T) {}

49
libgo/misc/cgo/test/issue3261.go Normal file
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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cgotest
/*
// libgcc on ARM might be compiled as thumb code, but our 5l
// can't handle that, so we have to disable this test on arm.
#ifdef __ARMEL__
#include <stdio.h>
int vabs(int x) {
puts("testLibgcc is disabled on ARM because 5l cannot handle thumb library.");
return (x < 0) ? -x : x;
}
#elif defined(__arm64__) && defined(__clang__)
#include <stdio.h>
int vabs(int x) {
puts("testLibgcc is disabled on ARM64 with clang due to lack of libgcc.");
return (x < 0) ? -x : x;
}
#else
int __absvsi2(int); // dummy prototype for libgcc function
// we shouldn't name the function abs, as gcc might use
// the builtin one.
int vabs(int x) { return __absvsi2(x); }
#endif
*/
import "C"
import "testing"
func testLibgcc(t *testing.T) {
var table = []struct {
in, out C.int
}{
{0, 0},
{1, 1},
{-42, 42},
{1000300, 1000300},
{1 - 1<<31, 1<<31 - 1},
}
for _, v := range table {
if o := C.vabs(v.in); o != v.out {
t.Fatalf("abs(%d) got %d, should be %d", v.in, o, v.out)
return
}
}
}

47
libgo/misc/cgo/test/issue3729.go Normal file
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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Issue 3729: cmd/cgo: access errno from void C function
// void f(void) returns [0]byte, error in Go world.
// +build !windows
package cgotest
/*
#include <errno.h>
void g(void) {
errno = E2BIG;
}
// try to pass some non-trivial arguments to function g2
const char _expA = 0x42;
const float _expB = 3.14159;
const short _expC = 0x55aa;
const int _expD = 0xdeadbeef;
void g2(int x, char a, float b, short c, int d) {
if (a == _expA && b == _expB && c == _expC && d == _expD)
errno = x;
else
errno = -1;
}
*/
import "C"
import (
"syscall"
"testing"
)
func test3729(t *testing.T) {
_, e := C.g()
if e != syscall.E2BIG {
t.Errorf("got %q, expect %q", e, syscall.E2BIG)
}
_, e = C.g2(C.EINVAL, C._expA, C._expB, C._expC, C._expD)
if e != syscall.EINVAL {
t.Errorf("got %q, expect %q", e, syscall.EINVAL)
}
}

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libgo/misc/cgo/test/issue3729w.go Normal file
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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Issue 3729: cmd/cgo: access errno from void C function
// void f(void) returns [0]byte, error in Go world.
// +build windows
package cgotest
import "testing"
func test3729(t *testing.T) {
t.Log("skip errno test on Windows")
}

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libgo/misc/cgo/test/issue3741.go Normal file
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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cgotest
import "C"
//export exportSliceIn
func exportSliceIn(s []byte) bool {
return len(s) == cap(s)
}
//export exportSliceOut
func exportSliceOut() []byte {
return []byte{1}
}
//export exportSliceInOut
func exportSliceInOut(s []byte) []byte {
return s
}

39
libgo/misc/cgo/test/issue3775.go Normal file
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// +build !android
package cgotest
/*
void lockOSThreadCallback(void);
inline static void lockOSThreadC(void)
{
lockOSThreadCallback();
}
int usleep(unsigned usec);
*/
import "C"
import (
"runtime"
"testing"
)
func init() {
// Same as test3775 but run during init so that
// there are two levels of internal runtime lock
// (1 for init, 1 for cgo).
// This would have been broken by CL 11663043.
C.lockOSThreadC()
}
func test3775(t *testing.T) {
// Used to panic because of the UnlockOSThread below.
C.lockOSThreadC()
}
//export lockOSThreadCallback
func lockOSThreadCallback() {
runtime.LockOSThread()
runtime.UnlockOSThread()
go C.usleep(10000)
runtime.Gosched()
}

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libgo/misc/cgo/test/issue3945.go Normal file
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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cgotest
// Test that cgo reserves enough stack space during cgo call.
// See https://golang.org/issue/3945 for details.
// #include <stdio.h>
//
// void say() {
// printf("%s from C\n", "hello");
// }
//
import "C"
import "testing"
func testPrintf(t *testing.T) {
C.say()
}

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libgo/misc/cgo/test/issue4029.c Normal file
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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build !windows
void call4029(void *arg) {
void (*fn)(void) = arg;
fn();
}

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libgo/misc/cgo/test/issue4029.go Normal file
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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build !windows
package cgotest
/*
#include <dlfcn.h>
#cgo linux LDFLAGS: -ldl
extern void call4029(void *arg);
*/
import "C"
import (
"testing"
)
var callbacks int
//export IMPIsOpaque
func IMPIsOpaque() {
callbacks++
}
//export IMPInitWithFrame
func IMPInitWithFrame() {
callbacks++
}
//export IMPDrawRect
func IMPDrawRect() {
callbacks++
}
//export IMPWindowResize
func IMPWindowResize() {
callbacks++
}
func test4029(t *testing.T) {
loadThySelf(t, "IMPWindowResize")
loadThySelf(t, "IMPDrawRect")
loadThySelf(t, "IMPInitWithFrame")
loadThySelf(t, "IMPIsOpaque")
if callbacks != 4 {
t.Errorf("got %d callbacks, expected 4", callbacks)
}
}
func loadThySelf(t *testing.T, symbol string) {
this_process := C.dlopen(nil, C.RTLD_NOW)
if this_process == nil {
t.Error("dlopen:", C.GoString(C.dlerror()))
return
}
defer C.dlclose(this_process)
symbol_address := C.dlsym(this_process, C.CString(symbol))
if symbol_address == nil {
t.Error("dlsym:", C.GoString(C.dlerror()))
return
}
t.Log(symbol, symbol_address)
C.call4029(symbol_address)
}

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libgo/misc/cgo/test/issue4029w.go Normal file
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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build windows
package cgotest
import "testing"
func test4029(t *testing.T) {
}

23
libgo/misc/cgo/test/issue4054a.go Normal file
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@ -0,0 +1,23 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cgotest
/*
typedef enum {
A = 0,
B,
C,
D,
E,
F,
G,
H,
I,
J,
} issue4054a;
*/
import "C"
var issue4054a = []int{C.A, C.B, C.C, C.D, C.E, C.F, C.G, C.H, C.I, C.J}

23
libgo/misc/cgo/test/issue4054b.go Normal file
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@ -0,0 +1,23 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cgotest
/*
typedef enum {
A = 0,
B,
C,
D,
E,
F,
G,
H,
I,
J,
} issue4054b;
*/
import "C"
var issue4054b = []int{C.A, C.B, C.C, C.D, C.E, C.F, C.G, C.H, C.I, C.J}

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