use __attribute__ format in sdscatprintf() when the compiler is GCC. Fixed format bugs resulting from the new warnings.

1 files changed, 7 insertions, 0 deletions

diff --git a/sds.h b/sds.h
index 0fc2c9281..0d296ff78 100644
--- a/sds.h
+++ b/sds.h
@@ -52,7 +52,14 @@ sds sdscatlen(sds s, void *t, size_t len);
 sds sdscat(sds s, char *t);
 sds sdscpylen(sds s, char *t, size_t len);
 sds sdscpy(sds s, char *t);
+
+#ifdef __GNUC__
+sds sdscatprintf(sds s, const char *fmt, ...)
+    __attribute__((format(printf, 2, 3)));
+#else
 sds sdscatprintf(sds s, const char *fmt, ...);
+#endif
+
 sds sdstrim(sds s, const char *cset);
 sds sdsrange(sds s, long start, long end);
 void sdsupdatelen(sds s);