Add __attribute__((format(printf, a, b))) to printf like functions.
Fix potential string format bug.
Change-Id: Ie05aac53b2c45a48bd68e340b76ccb21edfd28b7
diff --git a/common.h b/common.h
index ff577c2..1182d77 100644
--- a/common.h
+++ b/common.h
@@ -31,7 +31,7 @@
// Write a message to the on-screen log shown with Alt-L (also to stderr).
// The screen is small, and users may need to report these messages to support,
// so keep the output short and not too cryptic.
-void ui_print(const char *fmt, ...);
+void ui_print(const char *fmt, ...) __attribute__((format(printf, 1, 2)));
// Display some header text followed by a menu of items, which appears
// at the top of the screen (in place of any scrolling ui_print()