diff options
Diffstat (limited to 'string')
| -rw-r--r-- | string/Makefile | 3 | ||||
| -rw-r--r-- | string/Versions | 4 | ||||
| -rw-r--r-- | string/string.h | 25 |
3 files changed, 29 insertions, 3 deletions
diff --git a/string/Makefile b/string/Makefile index ad5ff79d4c..5ab487f5ba 100644 --- a/string/Makefile +++ b/string/Makefile @@ -39,7 +39,8 @@ routines := strcat strchr strcmp strcoll strcpy strcspn \ delete extract insert stringify \ addsep replace) \ envz basename \ - strcoll_l strxfrm_l string-inlines memrchr + strcoll_l strxfrm_l string-inlines memrchr \ + xpg-strerror # Gcc internally generates calls to unbounded memcpy and memset # for -fbounded-pointer compiles. Glibc uses memchr for explicit checks. diff --git a/string/Versions b/string/Versions index 2708091a4d..ee5dee903f 100644 --- a/string/Versions +++ b/string/Versions @@ -73,4 +73,8 @@ libc { # m* memrchr; } + GLIBC_2.3.4 { + # x* + __xpg_strerror_r; + } } diff --git a/string/string.h b/string/string.h index 108d54da4e..19dd9c3188 100644 --- a/string/string.h +++ b/string/string.h @@ -243,9 +243,30 @@ __BEGIN_NAMESPACE_STD extern char *strerror (int __errnum) __THROW; __END_NAMESPACE_STD #if defined __USE_XOPEN2K || defined __USE_MISC -/* Reentrant version of `strerror'. If a temporary buffer is required, at - most BUFLEN bytes of BUF will be used. */ +/* Reentrant version of `strerror'. + There are 2 flavors of `strerror_r', GNU which returns the string + and may or may not use the supplied temporary buffer and POSIX one + which fills the string into the buffer. + To use the POSIX version, -D_XOPEN_SOURCE=600 or -D_POSIX_C_SOURCE=200112L + without -D_GNU_SOURCE is needed, otherwise the GNU version is + preferred. */ +# if defined __USE_XOPEN2K && !defined __USE_GNU +/* Fill BUF with a string describing the meaning of the `errno' code in + ERRNUM. */ +# ifdef __REDIRECT +extern int __REDIRECT (strerror_r, + (int __errnum, char *__buf, size_t __buflen), + __xpg_strerror_r) __THROW; +# else +extern int __xpg_strerror_r (int __errnum, char *__buf, size_t __buflen) + __THROW; +# define strerror_r __xpg_strerror_r +# endif +# else +/* If a temporary buffer is required, at most BUFLEN bytes of BUF will be + used. */ extern char *strerror_r (int __errnum, char *__buf, size_t __buflen) __THROW; +# endif #endif /* We define this function always since `bzero' is sometimes needed when |