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Fix __redisSetErrorFromErrno() can not get error string.

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snprintf() may change errno.
This commit is contained in:
Jin Qing 2016-12-30 23:13:02 +08:00
parent 33152ad163
commit 25cd884f6b
1 changed files with 2 additions and 1 deletions
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3
net.c
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@ -65,12 +65,13 @@ static void redisContextCloseFd(redisContext *c) {
} }
static void __redisSetErrorFromErrno(redisContext *c, int type, const char *prefix) { static void __redisSetErrorFromErrno(redisContext *c, int type, const char *prefix) {
int errorno = errno; /* snprintf() may change errno */
char buf[128] = { 0 }; char buf[128] = { 0 };
size_t len = 0; size_t len = 0;
if (prefix != NULL) if (prefix != NULL)
len = snprintf(buf,sizeof(buf),"%s: ",prefix); len = snprintf(buf,sizeof(buf),"%s: ",prefix);
__redis_strerror_r(errno, (char *)(buf + len), sizeof(buf) - len); __redis_strerror_r(errorno, (char *)(buf + len), sizeof(buf) - len);
__redisSetError(c,type,buf); __redisSetError(c,type,buf);
} }