gcc/libgo/runtime/go-eface-val-compare.c
Ian Lance Taylor 7a9389330e Add Go frontend, libgo library, and Go testsuite.
gcc/:
	* gcc.c (default_compilers): Add entry for ".go".
	* common.opt: Add -static-libgo as a driver option.
	* doc/install.texi (Configuration): Mention libgo as an option for
	--enable-shared.  Mention go as an option for --enable-languages.
	* doc/invoke.texi (Overall Options): Mention .go as a file name
	suffix.  Mention go as a -x option.
	* doc/frontends.texi (G++ and GCC): Mention Go as a supported
	language.
	* doc/sourcebuild.texi (Top Level): Mention libgo.
	* doc/standards.texi (Standards): Add section on Go language.
	Move references for other languages into their own section.
	* doc/contrib.texi (Contributors): Mention that I contributed the
	Go frontend.
gcc/testsuite/:
	* lib/go.exp: New file.
	* lib/go-dg.exp: New file.
	* lib/go-torture.exp: New file.
	* lib/target-supports.exp (check_compile): Match // Go.

From-SVN: r167407
2010-12-03 04:34:57 +00:00

33 lines
999 B
C

/* go-eface-val-compare.c -- compare an empty interface with a value.
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 "go-type.h"
#include "interface.h"
/* Compare an empty interface with a value. Return 0 for equal, not
zero for not equal (return value is like strcmp). */
int
__go_empty_interface_value_compare (
struct __go_empty_interface left,
const struct __go_type_descriptor *right_descriptor,
const void *val)
{
const struct __go_type_descriptor *left_descriptor;
left_descriptor = left.__type_descriptor;
if (left_descriptor == NULL)
return 1;
if (!__go_type_descriptors_equal (left_descriptor, right_descriptor))
return 1;
if (__go_is_pointer_type (left_descriptor))
return left.__object == val ? 0 : 1;
if (!left_descriptor->__equalfn (left.__object, val,
left_descriptor->__size))
return 1;
return 0;
}