htsbuf: ensure that printf arguments are validated

diff --git a/src/htsbuf.h b/src/htsbuf.h
index b355ce1f0c4c04183b6d041e244c625cbb0f7d4a..50c8d3ac8da439546067735bed6a1a22ccf394c2 100644 (file)
--- a/src/htsbuf.h
+++ b/src/htsbuf.h
@@ -51,7 +51,8 @@ void htsbuf_queue_flush(htsbuf_queue_t *hq);
 
 void htsbuf_vqprintf(htsbuf_queue_t *hq, const char *fmt, va_list ap);
 
-void htsbuf_qprintf(htsbuf_queue_t *hq, const char *fmt, ...);
+void htsbuf_qprintf(htsbuf_queue_t *hq, const char *fmt, ...)
+  __attribute__((format(printf,2,3)));
 
 void htsbuf_append(htsbuf_queue_t *hq, const void *buf, size_t len);