From 8e31681c5a5a2fd6bbdf751bcc900a4481e2fa29 Mon Sep 17 00:00:00 2001
From: Simon Glass <sjg@chromium.org>
Date: Tue, 29 Dec 2015 05:22:46 -0700
Subject: [PATCH] tiny-printf: Avoid printing NULL strings
Add a check for NULL strings to avoid printing junk to the console.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
---
lib/tiny-printf.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/lib/tiny-printf.c b/lib/tiny-printf.c
index 403b134cd1..efe5c25a59 100644
--- a/lib/tiny-printf.c
+++ b/lib/tiny-printf.c
@@ -108,8 +108,10 @@ int vprintf(const char *fmt, va_list va)
w--;
while (w-- > 0)
putc(lz ? '0' : ' ');
- while ((ch = *p++))
- putc(ch);
+ if (p) {
+ while ((ch = *p++))
+ putc(ch);
+ }
}
}
--
2.39.5