2013-10-29 Marc Glisse <marc.glisse@inria.fr>
PR tree-optimization/58689 include/ * ansidecl.h (ATTRIBUTE_RETURNS_NONNULL): New macro. * libiberty.h (basename, lbasename, dos_lbasename, unix_lbasename, concat_copy): Mark with attributes nonnull(1) and returns_nonnull. (concat, reconcat, concat_copy2, choose_temp_base, xstrerror, xmalloc, xrealloc, xcalloc, xstrdup, xstrndup, xmemdup, pex_init): Mark with attribute returns_nonnull. libiberty/ * concat.c: Remove note about xmalloc. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@204159 138bc75d-0d04-0410-961f-82ee72b054a4
This commit is contained in:
glisse
Tom Tromey
parent
eec6550343
commit
689a1abf0d
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@ -1,3 +1,13 @@
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2013-10-29 Marc Glisse <marc.glisse@inria.fr>
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PR tree-optimization/58689
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* ansidecl.h (ATTRIBUTE_RETURNS_NONNULL): New macro.
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* libiberty.h (basename, lbasename, dos_lbasename, unix_lbasename,
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concat_copy): Mark with attributes nonnull(1) and returns_nonnull.
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(concat, reconcat, concat_copy2, choose_temp_base, xstrerror,
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xmalloc, xrealloc, xcalloc, xstrdup, xstrndup, xmemdup, pex_init):
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Mark with attribute returns_nonnull.
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2013-10-22 Sterling Augustine <saugustine@google.com>
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* gdb/gdb-index.h: Merge from gdb tree.
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@ -311,6 +311,15 @@ So instead we use the macro below and test it against specific values. */
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# endif /* GNUC >= 3.3 */
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#endif /* ATTRIBUTE_NONNULL */
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/* Attribute `returns_nonnull' was valid as of gcc 4.9. */
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#ifndef ATTRIBUTE_RETURNS_NONNULL
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# if (GCC_VERSION >= 4009)
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# define ATTRIBUTE_RETURNS_NONNULL __attribute__ ((__returns_nonnull__))
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# else
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# define ATTRIBUTE_RETURNS_NONNULL
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# endif /* GNUC >= 4.9 */
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#endif /* ATTRIBUTE_RETURNS_NONNULL */
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/* Attribute `pure' was valid as of gcc 3.0. */
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#ifndef ATTRIBUTE_PURE
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# if (GCC_VERSION >= 3000)
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@ -107,7 +107,7 @@ extern int countargv (char**);
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is 1, we found it so don't provide any declaration at all. */
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#if !HAVE_DECL_BASENAME
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#if defined (__GNU_LIBRARY__ ) || defined (__linux__) || defined (__FreeBSD__) || defined (__OpenBSD__) || defined(__NetBSD__) || defined (__CYGWIN__) || defined (__CYGWIN32__) || defined (__MINGW32__) || defined (HAVE_DECL_BASENAME)
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extern char *basename (const char *);
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extern char *basename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1);
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#else
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/* Do not allow basename to be used if there is no prototype seen. We
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either need to use the above prototype or have one from
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@ -118,18 +118,18 @@ extern char *basename (const char *);
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/* A well-defined basename () that is always compiled in. */
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extern const char *lbasename (const char *);
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extern const char *lbasename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1);
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/* Same, but assumes DOS semantics (drive name, backslash is also a
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dir separator) regardless of host. */
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extern const char *dos_lbasename (const char *);
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extern const char *dos_lbasename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1);
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/* Same, but assumes Unix semantics (absolute paths always start with
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a slash, only forward slash is accepted as dir separator)
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regardless of host. */
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extern const char *unix_lbasename (const char *);
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extern const char *unix_lbasename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1);
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/* A well-defined realpath () that is always compiled in. */
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@ -139,7 +139,7 @@ extern char *lrealpath (const char *);
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the last argument of this function, to terminate the list of
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strings. Allocates memory using xmalloc. */
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extern char *concat (const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_SENTINEL;
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extern char *concat (const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_SENTINEL;
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/* Concatenate an arbitrary number of strings. You must pass NULL as
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the last argument of this function, to terminate the list of
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@ -148,7 +148,7 @@ extern char *concat (const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_SENTINEL;
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pointer to be freed after the new string is created, similar to the
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way xrealloc works. */
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extern char *reconcat (char *, const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_SENTINEL;
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extern char *reconcat (char *, const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_SENTINEL;
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/* Determine the length of concatenating an arbitrary number of
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strings. You must pass NULL as the last argument of this function,
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@ -161,14 +161,14 @@ extern unsigned long concat_length (const char *, ...) ATTRIBUTE_SENTINEL;
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to terminate the list of strings. The supplied memory is assumed
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to be large enough. */
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extern char *concat_copy (char *, const char *, ...) ATTRIBUTE_SENTINEL;
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extern char *concat_copy (char *, const char *, ...) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1) ATTRIBUTE_SENTINEL;
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/* Concatenate an arbitrary number of strings into a GLOBAL area of
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memory. You must pass NULL as the last argument of this function,
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to terminate the list of strings. The supplied memory is assumed
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to be large enough. */
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extern char *concat_copy2 (const char *, ...) ATTRIBUTE_SENTINEL;
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extern char *concat_copy2 (const char *, ...) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_SENTINEL;
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/* This is the global area used by concat_copy2. */
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@ -226,7 +226,7 @@ extern char *make_relative_prefix_ignore_links (const char *, const char *,
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/* Choose a temporary directory to use for scratch files. */
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extern char *choose_temp_base (void) ATTRIBUTE_MALLOC;
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extern char *choose_temp_base (void) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL;
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/* Return a temporary file name or NULL if unable to create one. */
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@ -256,7 +256,7 @@ extern int strtoerrno (const char *);
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/* ANSI's strerror(), but more robust. */
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extern char *xstrerror (int);
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extern char *xstrerror (int) ATTRIBUTE_RETURNS_NONNULL;
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/* Return the maximum signal number for which strsignal will return a
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string. */
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@ -298,30 +298,30 @@ extern void xmalloc_failed (size_t) ATTRIBUTE_NORETURN;
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message to stderr (using the name set by xmalloc_set_program_name,
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if any) and then call xexit. */
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extern void *xmalloc (size_t) ATTRIBUTE_MALLOC;
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extern void *xmalloc (size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL;
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/* Reallocate memory without fail. This works like xmalloc. Note,
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realloc type functions are not suitable for attribute malloc since
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they may return the same address across multiple calls. */
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extern void *xrealloc (void *, size_t);
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extern void *xrealloc (void *, size_t) ATTRIBUTE_RETURNS_NONNULL;
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/* Allocate memory without fail and set it to zero. This works like
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xmalloc. */
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extern void *xcalloc (size_t, size_t) ATTRIBUTE_MALLOC;
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extern void *xcalloc (size_t, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL;
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/* Copy a string into a memory buffer without fail. */
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extern char *xstrdup (const char *) ATTRIBUTE_MALLOC;
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extern char *xstrdup (const char *) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL;
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/* Copy at most N characters from string into a buffer without fail. */
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extern char *xstrndup (const char *, size_t) ATTRIBUTE_MALLOC;
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extern char *xstrndup (const char *, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL;
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/* Copy an existing memory buffer to a new memory buffer without fail. */
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extern void *xmemdup (const void *, size_t, size_t) ATTRIBUTE_MALLOC;
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extern void *xmemdup (const void *, size_t, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL;
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/* Physical memory routines. Return values are in BYTES. */
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extern double physmem_total (void);
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@ -399,7 +399,7 @@ extern void hex_init (void);
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Returns NULL on error. */
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extern struct pex_obj *pex_init (int flags, const char *pname,
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const char *tempbase);
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const char *tempbase) ATTRIBUTE_RETURNS_NONNULL;
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/* Flags for pex_run. These are bits to be or'ed together. */
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@ -1,3 +1,8 @@
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2013-10-29 Marc Glisse <marc.glisse@inria.fr>
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PR tree-optimization/58689
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* concat.c: Remove note about xmalloc.
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2013-10-27 Gerald Pfeifer <gerald@pfeifer.com>
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* testsuite/test-demangle.c: Include unistd.h.
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@ -25,23 +25,11 @@ Boston, MA 02110-1301, USA. */
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@dots{}, @code{NULL})
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Concatenate zero or more of strings and return the result in freshly
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@code{xmalloc}ed memory. Returns @code{NULL} if insufficient memory is
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available. The argument list is terminated by the first @code{NULL}
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pointer encountered. Pointers to empty strings are ignored.
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@code{xmalloc}ed memory. The argument list is terminated by the first
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@code{NULL} pointer encountered. Pointers to empty strings are ignored.
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@end deftypefn
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NOTES
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This function uses xmalloc() which is expected to be a front end
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function to malloc() that deals with low memory situations. In
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typical use, if malloc() returns NULL then xmalloc() diverts to an
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error handler routine which never returns, and thus xmalloc will
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never return a NULL pointer. If the client application wishes to
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deal with low memory situations itself, it should supply an xmalloc
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that just directly invokes malloc and blindly returns whatever
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malloc returns.
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*/
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