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Add alloc_size for libiberty memory allocation functions.

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2019-06-10  Martin Liska  <mliska@suse.cz>

	* ansidecl.h:
	(ATTRIBUTE_RESULT_SIZE_1): Define new macro.
	(ATTRIBUTE_RESULT_SIZE_2): Likewise.
	(ATTRIBUTE_RESULT_SIZE_1_2): Likewise.
	* libiberty.h (xmalloc): Add RESULT_SIZE attribute.
	(xrealloc): Likewise.
	(xcalloc): Likewise.

From-SVN: r272109
This commit is contained in:
Martin Liska 2019-06-10 09:42:22 +02:00 • committed by Martin Liska
parent 74ac8f1fe9
commit 3bb0dcb6c0
3 changed files with 38 additions and 3 deletions
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10
include/ChangeLog
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@ -1,3 +1,13 @@
2019-06-10 Martin Liska <mliska@suse.cz>
* ansidecl.h:
(ATTRIBUTE_RESULT_SIZE_1): Define new macro.
(ATTRIBUTE_RESULT_SIZE_2): Likewise.
(ATTRIBUTE_RESULT_SIZE_1_2): Likewise.
* libiberty.h (xmalloc): Add RESULT_SIZE attribute.
(xrealloc): Likewise.
(xcalloc): Likewise.
2019-04-26 Michael Forney <mforney@mforney.org>
* libiberty.h (vasprintf): Don't declare if HAVE_DECL_VASPRINTF

25
include/ansidecl.h
View file

@ -292,6 +292,31 @@ So instead we use the macro below and test it against specific values. */
# endif
#endif
/* Attribute `alloc_size' was valid as of gcc 4.3. */
#ifndef ATTRIBUTE_RESULT_SIZE_1
# if (GCC_VERSION >= 4003)
# define ATTRIBUTE_RESULT_SIZE_1 __attribute__ ((alloc_size (1)))
# else
# define ATTRIBUTE_RESULT_SIZE_1
#endif
#endif
#ifndef ATTRIBUTE_RESULT_SIZE_2
# if (GCC_VERSION >= 4003)
# define ATTRIBUTE_RESULT_SIZE_2 __attribute__ ((alloc_size (2)))
# else
# define ATTRIBUTE_RESULT_SIZE_2
#endif
#endif
#ifndef ATTRIBUTE_RESULT_SIZE_1_2
# if (GCC_VERSION >= 4003)
# define ATTRIBUTE_RESULT_SIZE_1_2 __attribute__ ((alloc_size (1, 2)))
# else
# define ATTRIBUTE_RESULT_SIZE_1_2
#endif
#endif
/* We use __extension__ in some places to suppress -pedantic warnings
about GCC extensions. This feature didn't work properly before
gcc 2.8. */

6
include/libiberty.h
View file

@ -310,18 +310,18 @@ extern void xmalloc_failed (size_t) ATTRIBUTE_NORETURN;
message to stderr (using the name set by xmalloc_set_program_name,
if any) and then call xexit. */
extern void *xmalloc (size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL;
extern void *xmalloc (size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_RESULT_SIZE_1;
/* Reallocate memory without fail. This works like xmalloc. Note,
realloc type functions are not suitable for attribute malloc since
they may return the same address across multiple calls. */
extern void *xrealloc (void *, size_t) ATTRIBUTE_RETURNS_NONNULL;
extern void *xrealloc (void *, size_t) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_RESULT_SIZE_2;
/* Allocate memory without fail and set it to zero. This works like
xmalloc. */
extern void *xcalloc (size_t, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL;
extern void *xcalloc (size_t, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_RESULT_SIZE_1_2;
/* Copy a string into a memory buffer without fail. */