[Minios-devel] [UNIKRAFT PATCH 22/22] nolibc: Clear a -Wstringop-overflow warning for strncpy

[Wei Chen <wei.chen@xxxxxxx>]

The strncpy needs a signed integer for 3rd parameter, but the SIZE_MAX
is unsigned integer. We will get following error:
/lib/nolibc/string.c:155:9: warning: ‘strncpy’: specified size
18446744073709551615 exceeds maximum object size 9223372036854775807
[-Wstringop-overflow=]
  return strncpy(dst, src, SIZE_MAX);
         ^
Using SSIZE_MAX to replace SIZE_MAX to fix this warning.

Signed-off-by: Wei Chen <wei.chen@xxxxxxx>
---
 lib/nolibc/string.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/nolibc/string.c b/lib/nolibc/string.c
index 6f853ba..fa450c9 100644
--- a/lib/nolibc/string.c
+++ b/lib/nolibc/string.c
@@ -152,7 +152,7 @@ char *strncpy(char *dst, const char *src, size_t len)
 
 char *strcpy(char *dst, const char *src)
 {
-       return strncpy(dst, src, SIZE_MAX);
+       return strncpy(dst, src, SSIZE_MAX);
 }
 
 int strncmp(const char *str1, const char *str2, size_t len)
-- 
2.17.1


_______________________________________________
Minios-devel mailing list
Minios-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/minios-devel