diff options
Diffstat (limited to 'hiredis.h')
| -rw-r--r-- | hiredis.h | 24 |
1 files changed, 24 insertions, 0 deletions
@@ -76,6 +76,30 @@ * SO_REUSEADDR is being used. */ #define REDIS_CONNECT_RETRIES 10 +/* strerror_r has two completely different prototypes and behaviors + * depending on system issues, so we need to operate on the error buffer + * differently depending on which strerror_r we're using. */ +#ifndef _GNU_SOURCE +/* "regular" POSIX strerror_r that does the right thing. */ +#define __redis_strerror_r(errno, buf, len) \ + do { \ + strerror_r((errno), (buf), (len)); \ + } while (0) +#else +/* "bad" GNU strerror_r we need to clean up after. */ +#define __redis_strerror_r(errno, buf, len) \ + do { \ + char *err_str = strerror_r((errno), (buf), (len)); \ + /* If return value _isn't_ the start of the buffer we passed in, \ + * then GNU strerror_r returned an internal static buffer and we \ + * need to copy the result into our private buffer. */ \ + if (err_str != (buf)) { \ + buf[(len)] = '\0'; \ + strncat((buf), err_str, ((len) - 1)); \ + } \ + } while (0) +#endif + #ifdef __cplusplus extern "C" { #endif |