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Introduce ATTRIBUTE_UNUSED_RESULT and use it

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This introduces the new ATTRIBUTE_UNUSED_RESULT define, and applies it
to gdb_argv::release.

gdb/ChangeLog
2019-03-05  Tom Tromey  <tromey@adacore.com>

	* utils.h (class gdb_argv) <release>: Add
	ATTRIBUTE_UNUSED_RESULT.
	* common/common-defs.h (ATTRIBUTE_UNUSED_RESULT): Define.
This commit is contained in:
Tom Tromey 2019-02-26 14:39:01 -07:00
parent 093f70ccd3
commit 18cb7c9f3a
3 changed files with 13 additions and 1 deletions
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6
gdb/ChangeLog
View File

@ -1,3 +1,9 @@
2019-03-05 Tom Tromey <tromey@adacore.com>
* utils.h (class gdb_argv) <release>: Add
ATTRIBUTE_UNUSED_RESULT.
* common/common-defs.h (ATTRIBUTE_UNUSED_RESULT): Define.
2019-03-02 Eli Zaretskii <eliz@gnu.org> 2019-03-02 Eli Zaretskii <eliz@gnu.org>
* xml-syscall.c (xml_list_syscalls_by_group): Drop 'struct' from * xml-syscall.c (xml_list_syscalls_by_group): Drop 'struct' from

6
gdb/common/common-defs.h
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@ -93,6 +93,12 @@
#undef ATTRIBUTE_PRINTF #undef ATTRIBUTE_PRINTF
#define ATTRIBUTE_PRINTF _GL_ATTRIBUTE_FORMAT_PRINTF #define ATTRIBUTE_PRINTF _GL_ATTRIBUTE_FORMAT_PRINTF
#if GCC_VERSION >= 3004
#define ATTRIBUTE_UNUSED_RESULT __attribute__ ((__warn_unused_result__))
#else
#define ATTRIBUTE_UNUSED_RESULT
#endif
#include "libiberty.h" #include "libiberty.h"
#include "pathmax.h" #include "pathmax.h"
#include "gdb/signals.h" #include "gdb/signals.h"

2
gdb/utils.h
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@ -188,7 +188,7 @@ public:
/* Return the underlying array, transferring ownership to the /* Return the underlying array, transferring ownership to the
caller. */ caller. */
char **release () ATTRIBUTE_UNUSED_RESULT char **release ()
{ {
char **result = m_argv; char **result = m_argv;
m_argv = NULL; m_argv = NULL;