diff options
Diffstat (limited to 'string/string.h')
| -rw-r--r-- | string/string.h | 25 |
1 files changed, 23 insertions, 2 deletions
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 |