build: new configure option --enable-gcc-warnings

[chaz/tar] / src / common.h

diff --git a/src/common.h b/src/common.h
index a78e50f72f9d8d841a9730d025ea4e0e72b3d60d..eba3bb49010e89d74c85982643319060623eec3f 100644 (file)
--- a/src/common.h
+++ b/src/common.h
@@ -781,7 +781,8 @@ void sys_exec_checkpoint_script (const char *script_name,
                                 int checkpoint_number);
 
 /* Module compare.c */
-void report_difference (struct tar_stat_info *st, const char *message, ...);
+void report_difference (struct tar_stat_info *st, const char *message, ...)
+  __attribute__ ((format (printf, 2, 3)));
 
 /* Module sparse.c */
 bool sparse_member_p (struct tar_stat_info *st);