gcc/libsanitizer/lsan/lsan_mac.cc

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ubsan.c (ubsan_expand_null_ifn): Use _v1 suffixed type mismatch builtins... * ubsan.c (ubsan_expand_null_ifn): Use _v1 suffixed type mismatch builtins, store max (log2 (align), 0) into uchar field instead of align into uptr field. (ubsan_expand_objsize_ifn): Use _v1 suffixed type mismatch builtins, store uchar 0 field instead of uptr 0 field. (instrument_nonnull_return): Use _v1 suffixed nonnull return builtin, instead of passing one address of struct with 2 locations pass two addresses of structs with 1 location each. * sanitizer.def (BUILT_IN_UBSAN_HANDLE_TYPE_MISMATCH, BUILT_IN_UBSAN_HANDLE_TYPE_MISMATCH_ABORT, BUILT_IN_UBSAN_HANDLE_NONNULL_RETURN, BUILT_IN_UBSAN_HANDLE_NONNULL_RETURN_ABORT): Removed. (BUILT_IN_UBSAN_HANDLE_TYPE_MISMATCH_V1, BUILT_IN_UBSAN_HANDLE_TYPE_MISMATCH_V1_ABORT, BUILT_IN_UBSAN_HANDLE_NONNULL_RETURN_V1, BUILT_IN_UBSAN_HANDLE_NONNULL_RETURN_V1_ABORT): New builtins. * c-c++-common/ubsan/float-cast-overflow-1.c: Drop value keyword from expected output regexps. * c-c++-common/ubsan/float-cast-overflow-2.c: Likewise. * c-c++-common/ubsan/float-cast-overflow-3.c: Likewise. * c-c++-common/ubsan/float-cast-overflow-4.c: Likewise. * c-c++-common/ubsan/float-cast-overflow-5.c: Likewise. * c-c++-common/ubsan/float-cast-overflow-6.c: Likewise. * c-c++-common/ubsan/float-cast-overflow-8.c: Likewise. * c-c++-common/ubsan/float-cast-overflow-9.c: Likewise. * c-c++-common/ubsan/float-cast-overflow-10.c: Likewise. * g++.dg/ubsan/float-cast-overflow-bf.C: Likewise. * gcc.dg/ubsan/float-cast-overflow-bf.c: Likewise. * g++.dg/asan/default-options-1.C (__asan_default_options): Add used attribute. * g++.dg/asan/asan_test.C: Run with ASAN_OPTIONS=handle_segv=2 in the environment. * All source files: Merge from upstream 315899. * asan/Makefile.am (nodist_saninclude_HEADERS): Add include/sanitizer/tsan_interface.h. * asan/libtool-version: Bump the libasan SONAME. * lsan/Makefile.am (sanitizer_lsan_files): Add lsan_common_mac.cc. (lsan_files): Add lsan_linux.cc, lsan_mac.cc and lsan_malloc_mac.cc. * sanitizer_common/Makefile.am (sanitizer_common_files): Add sancov_flags.cc, sanitizer_allocator_checks.cc, sanitizer_coverage_libcdep_new.cc, sanitizer_errno.cc, sanitizer_file.cc, sanitizer_mac_libcdep.cc and sanitizer_stoptheworld_mac.cc. Remove sanitizer_coverage_libcdep.cc and sanitizer_coverage_mapping_libcdep.cc. * tsan/Makefile.am (tsan_files): Add tsan_external.cc. * ubsan/Makefile.am (DEFS): Add -DUBSAN_CAN_USE_CXXABI=1. (ubsan_files): Add ubsan_init_standalone.cc and ubsan_signals_standalone.cc. * ubsan/libtool-version: Bump the libubsan SONAME. * asan/Makefile.in: Regenerate. * lsan/Makefile.in: Regenerate. * sanitizer_common/Makefile.in: Regenerate. * tsan/Makefile.in: Regenerate. * ubsan/Makefile.in: Regenerate. From-SVN: r253887
2017-10-19 13:23:59 +02:00
//===-- lsan_mac.cc -------------------------------------------------------===//
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file is a part of LeakSanitizer, a memory leak checker.
//
// Mac-specific details.
//===----------------------------------------------------------------------===//
#include "sanitizer_common/sanitizer_platform.h"
#if SANITIZER_MAC
#include "interception/interception.h"
#include "lsan.h"
#include "lsan_allocator.h"
#include "lsan_thread.h"
#include <pthread.h>
namespace __lsan {
// Support for the following functions from libdispatch on Mac OS:
// dispatch_async_f()
// dispatch_async()
// dispatch_sync_f()
// dispatch_sync()
// dispatch_after_f()
// dispatch_after()
// dispatch_group_async_f()
// dispatch_group_async()
// TODO(glider): libdispatch API contains other functions that we don't support
// yet.
//
// dispatch_sync() and dispatch_sync_f() are synchronous, although chances are
// they can cause jobs to run on a thread different from the current one.
// TODO(glider): if so, we need a test for this (otherwise we should remove
// them).
//
// The following functions use dispatch_barrier_async_f() (which isn't a library
// function but is exported) and are thus supported:
// dispatch_source_set_cancel_handler_f()
// dispatch_source_set_cancel_handler()
// dispatch_source_set_event_handler_f()
// dispatch_source_set_event_handler()
//
// The reference manual for Grand Central Dispatch is available at
// http://developer.apple.com/library/mac/#documentation/Performance/Reference/GCD_libdispatch_Ref/Reference/reference.html
// The implementation details are at
// http://libdispatch.macosforge.org/trac/browser/trunk/src/queue.c
typedef void *dispatch_group_t;
typedef void *dispatch_queue_t;
typedef void *dispatch_source_t;
typedef u64 dispatch_time_t;
typedef void (*dispatch_function_t)(void *block);
typedef void *(*worker_t)(void *block);
// A wrapper for the ObjC blocks used to support libdispatch.
typedef struct {
void *block;
dispatch_function_t func;
u32 parent_tid;
} lsan_block_context_t;
ALWAYS_INLINE
void lsan_register_worker_thread(int parent_tid) {
if (GetCurrentThread() == kInvalidTid) {
u32 tid = ThreadCreate(parent_tid, 0, true);
ThreadStart(tid, GetTid());
SetCurrentThread(tid);
}
}
// For use by only those functions that allocated the context via
// alloc_lsan_context().
extern "C" void lsan_dispatch_call_block_and_release(void *block) {
lsan_block_context_t *context = (lsan_block_context_t *)block;
VReport(2,
"lsan_dispatch_call_block_and_release(): "
"context: %p, pthread_self: %p\n",
block, pthread_self());
lsan_register_worker_thread(context->parent_tid);
// Call the original dispatcher for the block.
context->func(context->block);
lsan_free(context);
}
} // namespace __lsan
using namespace __lsan; // NOLINT
// Wrap |ctxt| and |func| into an lsan_block_context_t.
// The caller retains control of the allocated context.
extern "C" lsan_block_context_t *alloc_lsan_context(void *ctxt,
dispatch_function_t func) {
GET_STACK_TRACE_THREAD;
lsan_block_context_t *lsan_ctxt =
(lsan_block_context_t *)lsan_malloc(sizeof(lsan_block_context_t), stack);
lsan_ctxt->block = ctxt;
lsan_ctxt->func = func;
lsan_ctxt->parent_tid = GetCurrentThread();
return lsan_ctxt;
}
// Define interceptor for dispatch_*_f function with the three most common
// parameters: dispatch_queue_t, context, dispatch_function_t.
#define INTERCEPT_DISPATCH_X_F_3(dispatch_x_f) \
INTERCEPTOR(void, dispatch_x_f, dispatch_queue_t dq, void *ctxt, \
dispatch_function_t func) { \
lsan_block_context_t *lsan_ctxt = alloc_lsan_context(ctxt, func); \
return REAL(dispatch_x_f)(dq, (void *)lsan_ctxt, \
lsan_dispatch_call_block_and_release); \
}
INTERCEPT_DISPATCH_X_F_3(dispatch_async_f)
INTERCEPT_DISPATCH_X_F_3(dispatch_sync_f)
INTERCEPT_DISPATCH_X_F_3(dispatch_barrier_async_f)
INTERCEPTOR(void, dispatch_after_f, dispatch_time_t when, dispatch_queue_t dq,
void *ctxt, dispatch_function_t func) {
lsan_block_context_t *lsan_ctxt = alloc_lsan_context(ctxt, func);
return REAL(dispatch_after_f)(when, dq, (void *)lsan_ctxt,
lsan_dispatch_call_block_and_release);
}
INTERCEPTOR(void, dispatch_group_async_f, dispatch_group_t group,
dispatch_queue_t dq, void *ctxt, dispatch_function_t func) {
lsan_block_context_t *lsan_ctxt = alloc_lsan_context(ctxt, func);
REAL(dispatch_group_async_f)
(group, dq, (void *)lsan_ctxt, lsan_dispatch_call_block_and_release);
}
#if !defined(MISSING_BLOCKS_SUPPORT)
extern "C" {
void dispatch_async(dispatch_queue_t dq, void (^work)(void));
void dispatch_group_async(dispatch_group_t dg, dispatch_queue_t dq,
void (^work)(void));
void dispatch_after(dispatch_time_t when, dispatch_queue_t queue,
void (^work)(void));
void dispatch_source_set_cancel_handler(dispatch_source_t ds,
void (^work)(void));
void dispatch_source_set_event_handler(dispatch_source_t ds,
void (^work)(void));
}
#define GET_LSAN_BLOCK(work) \
void (^lsan_block)(void); \
int parent_tid = GetCurrentThread(); \
lsan_block = ^(void) { \
lsan_register_worker_thread(parent_tid); \
work(); \
}
INTERCEPTOR(void, dispatch_async, dispatch_queue_t dq, void (^work)(void)) {
GET_LSAN_BLOCK(work);
REAL(dispatch_async)(dq, lsan_block);
}
INTERCEPTOR(void, dispatch_group_async, dispatch_group_t dg,
dispatch_queue_t dq, void (^work)(void)) {
GET_LSAN_BLOCK(work);
REAL(dispatch_group_async)(dg, dq, lsan_block);
}
INTERCEPTOR(void, dispatch_after, dispatch_time_t when, dispatch_queue_t queue,
void (^work)(void)) {
GET_LSAN_BLOCK(work);
REAL(dispatch_after)(when, queue, lsan_block);
}
INTERCEPTOR(void, dispatch_source_set_cancel_handler, dispatch_source_t ds,
void (^work)(void)) {
if (!work) {
REAL(dispatch_source_set_cancel_handler)(ds, work);
return;
}
GET_LSAN_BLOCK(work);
REAL(dispatch_source_set_cancel_handler)(ds, lsan_block);
}
INTERCEPTOR(void, dispatch_source_set_event_handler, dispatch_source_t ds,
void (^work)(void)) {
GET_LSAN_BLOCK(work);
REAL(dispatch_source_set_event_handler)(ds, lsan_block);
}
#endif
#endif // SANITIZER_MAC