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Update. 

2000-05-11  Jan Hubicka  <jh@suse.cz>

	* misc/sys/cdefs.h: Add support for pure attribute.

	* include/string.h: Add __attribute_pure__ to various functions.
	* string/string.h: Likewise.
cvs/glibc-2-2-branch
Andreas Jaeger 26 years ago
parent
b227a3a6ad
commit
ca5a4c3c9f
4 changed files with 72 additions and 35 deletions
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  1. 7
      ChangeLog
  2. 18
      include/string.h
  3. 9
      misc/sys/cdefs.h
  4. 73
      string/string.h

7
ChangeLog
View File

@ -1,3 +1,10 @@
2000-05-11 Jan Hubicka <jh@suse.cz>
* misc/sys/cdefs.h: Add support for pure attribute.
* include/string.h: Add __attribute_pure__ to various functions.
* string/string.h: Likewise.
2000-05-10 Jakub Jelinek <jakub@redhat.com>
* elf/dl-reloc.c (_dl_reloc_bad_type): Sync messages with plt

18
include/string.h
View File

@ -5,23 +5,29 @@
extern void *__memccpy (void *__dest, __const void *__src,
int __c, size_t __n);
extern size_t __strnlen (__const char *__string, size_t __maxlen);
extern size_t __strnlen (__const char *__string, size_t __maxlen)
__attribute_pure__;
extern char *__strsep (char **__stringp, __const char *__delim);
extern int __strverscmp (__const char *__s1, __const char *__s2);
extern int __strverscmp (__const char *__s1, __const char *__s2)
__attribute_pure__;
extern int __strncasecmp (__const char *__s1, __const char *__s2,
size_t __n);
size_t __n)
__attribute_pure__;
extern char *__strndup (__const char *__string, size_t __n)
__attribute_malloc__;
extern void *__rawmemchr (__const void *__s, int __c);
extern void *__rawmemchr (__const void *__s, int __c)
__attribute_pure__;
extern char *__strchrnul (__const char *__s, int __c);
extern char *__strchrnul (__const char *__s, int __c)
__attribute_pure__;
extern void *__memrchr (__const void *__s, int __c, size_t __n);
extern void *__memrchr (__const void *__s, int __c, size_t __n)
__attribute_pure__;
/* Now the real definitions. We do this here since some of the functions
above are defined as macros in the headers. */

9
misc/sys/cdefs.h
View File

@ -123,6 +123,15 @@
# define __attribute_malloc__ /* Ignore */
#endif
/* At some point during the gcc 2.96 development the `pure' attribute
for functions was introduced. We don't want to use it unconditionally
(although this would be possible) since it generates warnings. */
#if __GNUC_PREREQ (2,96)
# define __attribute_pure__ __attribute__ ((__pure__))
#else
# define __attribute_pure__ /* Ignore */
#endif
/* It is possible to compile containing GCC extensions even if GCC is
run in pedantic mode if the uses are carefully marked using the
`__extension__' keyword. But this is not generally available before

73
string/string.h
View File

@ -55,18 +55,20 @@ extern void *memset (void *__s, int __c, size_t __n) __THROW;
/* Compare N bytes of S1 and S2. */
extern int memcmp (__const void *__s1, __const void *__s2, size_t __n)
__THROW;
__THROW __attribute_pure__;
/* Search N bytes of S for C. */
extern void *memchr (__const void *__s, int __c, size_t __n) __THROW;
extern void *memchr (__const void *__s, int __c, size_t __n)
__THROW __attribute_pure__;
#ifdef __USE_GNU
/* Search in S for C. This is similar to `memchr' but there is no
length limit. */
extern void *rawmemchr (__const void *__s, int __c) __THROW;
extern void *rawmemchr (__const void *__s, int __c) __THROW __attribute_pure__;
/* Search N bytes of S for the final occurrence of C. */
extern void *memrchr (__const void *__s, int __c, size_t __n) __THROW;
extern void *memrchr (__const void *__s, int __c, size_t __n)
__THROW __attribute_pure__;
#endif
@ -85,13 +87,15 @@ extern char *strncat (char *__restrict __dest, __const char *__restrict __src,
size_t __n) __THROW;
/* Compare S1 and S2. */
extern int strcmp (__const char *__s1, __const char *__s2) __THROW;
extern int strcmp (__const char *__s1, __const char *__s2)
__THROW __attribute_pure__;
/* Compare N characters of S1 and S2. */
extern int strncmp (__const char *__s1, __const char *__s2, size_t __n)
__THROW;
__THROW __attribute_pure__;
/* Compare the collated forms of S1 and S2. */
extern int strcoll (__const char *__s1, __const char *__s2) __THROW;
extern int strcoll (__const char *__s1, __const char *__s2)
__THROW __attribute_pure__;
/* Put a transformation of SRC into no more than N bytes of DEST. */
extern size_t strxfrm (char *__restrict __dest,
__const char *__restrict __src, size_t __n) __THROW;
@ -104,7 +108,7 @@ extern size_t strxfrm (char *__restrict __dest,
/* Compare the collated forms of S1 and S2 using rules from L. */
extern int __strcoll_l (__const char *__s1, __const char *__s2, __locale_t __l)
__THROW;
__THROW __attribute_pure__;
/* Put a transformation of SRC into no more than N bytes of DEST. */
extern size_t __strxfrm_l (char *__dest, __const char *__src, size_t __n,
__locale_t __l) __THROW;
@ -148,33 +152,37 @@ extern char *strndup (__const char *__string, size_t __n)
#endif
/* Find the first occurrence of C in S. */
extern char *strchr (__const char *__s, int __c) __THROW;
extern char *strchr (__const char *__s, int __c) __THROW __attribute_pure__;
/* Find the last occurrence of C in S. */
extern char *strrchr (__const char *__s, int __c) __THROW;
extern char *strrchr (__const char *__s, int __c) __THROW __attribute_pure__;
#ifdef __USE_GNU
/* This funciton is similar to `strchr'. But it returns a pointer to
the closing NUL byte in case C is not found in S. */
extern char *strchrnul (__const char *__s, int __c) __THROW;
extern char *strchrnul (__const char *__s, int __c) __THROW __attribute_pure__;
#endif
/* Return the length of the initial segment of S which
consists entirely of characters not in REJECT. */
extern size_t strcspn (__const char *__s, __const char *__reject) __THROW;
extern size_t strcspn (__const char *__s, __const char *__reject)
__THROW __attribute_pure__;
/* Return the length of the initial segment of S which
consists entirely of characters in ACCEPT. */
extern size_t strspn (__const char *__s, __const char *__accept) __THROW;
extern size_t strspn (__const char *__s, __const char *__accept)
__THROW __attribute_pure__;
/* Find the first occurrence in S of any character in ACCEPT. */
extern char *strpbrk (__const char *__s, __const char *__accept) __THROW;
extern char *strpbrk (__const char *__s, __const char *__accept)
__THROW __attribute_pure__;
/* Find the first occurrence of NEEDLE in HAYSTACK. */
extern char *strstr (__const char *__haystack, __const char *__needle) __THROW;
extern char *strstr (__const char *__haystack, __const char *__needle)
__THROW __attribute_pure__;
#ifdef __USE_GNU
/* Similar to `strstr' but this function ignores the case of both strings. */
extern char *__strcasestr (__const char *__haystack, __const char *__needle)
__THROW;
__THROW __attribute_pure__;
extern char *strcasestr (__const char *__haystack, __const char *__needle)
__THROW;
__THROW __attribute_pure__;
#endif
/* Divide S into tokens separated by characters in DELIM. */
@ -196,7 +204,8 @@ extern char *strtok_r (char *__restrict __s, __const char *__restrict __delim,
NEEDLE is NEEDLELEN bytes long;
HAYSTACK is HAYSTACKLEN bytes long. */
extern void *memmem (__const void *__haystack, size_t __haystacklen,
__const void *__needle, size_t __needlelen) __THROW;
__const void *__needle, size_t __needlelen)
__THROW __attribute_pure__;
/* Copy N bytes of SRC to DEST, return pointer to bytes after the
last written byte. */
@ -208,12 +217,13 @@ extern void *mempcpy (void *__restrict __dest,
/* Return the length of S. */
extern size_t strlen (__const char *__s) __THROW;
extern size_t strlen (__const char *__s) __THROW __attribute_pure__;
#ifdef __USE_GNU
/* Find the length of STRING, but scan at most MAXLEN characters.
If no '\0' terminator is found in that many characters, return MAXLEN. */
extern size_t strnlen (__const char *__string, size_t __maxlen) __THROW;
extern size_t strnlen (__const char *__string, size_t __maxlen)
__THROW __attribute_pure__;
#endif
@ -238,13 +248,14 @@ extern void bcopy (__const void *__src, void *__dest, size_t __n) __THROW;
extern void bzero (void *__s, size_t __n) __THROW;
/* Compare N bytes of S1 and S2 (same as memcmp). */
extern int bcmp (__const void *__s1, __const void *__s2, size_t __n) __THROW;
extern int bcmp (__const void *__s1, __const void *__s2, size_t __n)
__THROW __attribute_pure__;
/* Find the first occurrence of C in S (same as strchr). */
extern char *index (__const char *__s, int __c) __THROW;
extern char *index (__const char *__s, int __c) __THROW __attribute_pure__;
/* Find the last occurrence of C in S (same as strrchr). */
extern char *rindex (__const char *__s, int __c) __THROW;
extern char *rindex (__const char *__s, int __c) __THROW __attribute_pure__;
/* Return the position of the first bit set in I, or 0 if none are set.
The least-significant bit is position 1, the most-significant 32. */
@ -262,22 +273,25 @@ __extension__ extern int ffsll (long long int __ll)
# endif
/* Compare S1 and S2, ignoring case. */
extern int __strcasecmp (__const char *__s1, __const char *__s2) __THROW;
extern int strcasecmp (__const char *__s1, __const char *__s2) __THROW;
extern int __strcasecmp (__const char *__s1, __const char *__s2)
__THROW __attribute_pure__;
extern int strcasecmp (__const char *__s1, __const char *__s2)
__THROW __attribute_pure__;
/* Compare no more than N chars of S1 and S2, ignoring case. */
extern int strncasecmp (__const char *__s1, __const char *__s2, size_t __n)
__THROW;
__THROW __attribute_pure__;
#endif /* Use BSD. */
#ifdef __USE_GNU
/* Again versions of a few functions which use the given locale instead
of the global one. */
extern int __strcasecmp_l (__const char *__s1, __const char *__s2,
__locale_t __loc) __THROW;
__locale_t __loc) __THROW __attribute_pure__;
extern int __strncasecmp_l (__const char *__s1, __const char *__s2,
size_t __n, __locale_t __loc) __THROW;
size_t __n, __locale_t __loc)
__THROW __attribute_pure__;
#endif
#ifdef __USE_BSD
@ -289,7 +303,8 @@ extern char *strsep (char **__restrict __stringp,
#ifdef __USE_GNU
/* Compare S1 and S2 as strings holding name & indices/version numbers. */
extern int strverscmp (__const char *__s1, __const char *__s2) __THROW;
extern int strverscmp (__const char *__s1, __const char *__s2)
__THROW __attribute_pure__;
/* Return a string describing the meaning of the signal number in SIG. */
extern char *strsignal (int __sig) __THROW;

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