Have gcc check for NULL terminated arglist in rstrscat

diff --git a/rpmio/rpmstring.h b/rpmio/rpmstring.h
index 1947da2..54eeaf1 100644 (file)
--- a/rpmio/rpmstring.h
+++ b/rpmio/rpmstring.h
@@ -122,7 +122,7 @@ char *rstrcat(char **dest, const char *src);
  * @param arg          NULL terminated list of strings to concatenate
  * @return             realloc'd dest with strings appended
  */
-char *rstrscat(char **dest, const char *arg, ...);
+char *rstrscat(char **dest, const char *arg, ...) RPM_GNUC_NULL_TERMINATED;
 
 /** \ingroup rpmstring
  * Split string into fields separated by a character.