1 files changed, 2 insertions, 0 deletions
diff --git a/cache.h b/cache.h
index 4d5b76c76a..bc286ce22d 100644
--- a/cache.h
+++ b/cache.h
@@ -1395,6 +1395,8 @@ extern const char *git_mailmap_blob;
 
 /* IO helper functions */
 extern void maybe_flush_or_die(FILE *, const char *);
+__attribute__((format (printf, 2, 3)))
+extern void fprintf_or_die(FILE *, const char *fmt, ...);
 extern int copy_fd(int ifd, int ofd);
 extern int copy_file(const char *dst, const char *src, int mode);
 extern int copy_file_with_time(const char *dst, const char *src, int mode);