diff options
| author | Patrick Farrell <pfarrell@persistentsystems.com> | 2016-04-05 16:59:07 -0400 |
|---|---|---|
| committer | Andy Green <andy@warmcat.com> | 2016-04-30 02:08:11 +0800 |
| commit | c6e497ea481b00a6cc99200aaa293e8f02df4abf (patch) | |
| tree | 341f69ad6bc7d831c2e32e17436ddcb368684305 | |
| parent | 96487167ddd19cd6e22c115156f609257b19169c (diff) | |
| download | libwebsockets-c6e497ea481b00a6cc99200aaa293e8f02df4abf.tar.gz libwebsockets-c6e497ea481b00a6cc99200aaa293e8f02df4abf.tar.bz2 libwebsockets-c6e497ea481b00a6cc99200aaa293e8f02df4abf.zip | |
Add warn_unused_result check, attribute only supported by GCC 3.4 or later
warn_unused_result was introduced in GCC version 3.4.
Change-Id: I6c2cc938d2b868ddfe0889cc41d7fa9d70e1b907
| -rw-r--r-- | lib/libwebsockets.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/lib/libwebsockets.h b/lib/libwebsockets.h index 7c5a9ef2..763775a7 100644 --- a/lib/libwebsockets.h +++ b/lib/libwebsockets.h @@ -168,8 +168,15 @@ struct sockaddr_in; #endif #if defined(__GNUC__) + +/* warn_unused_result attribute only supported by GCC 3.4 or later */ +#if __GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) +#define LWS_WARN_UNUSED_RESULT __attribute__((warn_unused_result)) +#else +#define LWS_WARN_UNUSED_RESULT +#endif + #define LWS_VISIBLE __attribute__((visibility("default"))) -#define LWS_WARN_UNUSED_RESULT __attribute__ ((warn_unused_result)) #define LWS_WARN_DEPRECATED __attribute__ ((deprecated)) #else #define LWS_VISIBLE |