compat: declare `setproctitle()` as a printf function

diff --git a/src/compat/compat.h b/src/compat/compat.h
index 8d44eac1ab2b4a7c17f4fcb0efba2adadc471808..8a72bf57f39375103939d564b35bcb99a721126d 100644 (file)
--- a/src/compat/compat.h
+++ b/src/compat/compat.h
@@ -54,7 +54,7 @@ char *fgetln(FILE *, size_t *);
 #endif
 
 #if !HAVE_SETPROCTITLE
-void setproctitle(const char *fmt, ...);
+void setproctitle(const char *fmt, ...) __attribute__ ((format (printf, 1, 2)));
 #endif
 
 #if !HAVE_MALLOC