[igt-dev] [PATCH i-g-t 2/3] Remove extra '\0' in strncpy in igt_save_module_param

[Rodrigo Siqueira]

This patch fix the following gcc warning:

warning: ‘strncpy’ specified bound 32 equals destination size
[-Wstringop-truncation]
  strncpy(data->name, name, PARAM_NAME_MAX_SZ);

This error happens due to the '\0' character appended by strncpy. Notice
that reduces by one in the total of bytes to be copied, in this case, is
harmless because the strings received in the parameter already have
'\0'.

Signed-off-by: Rodrigo Siqueira <rodrigosiqueiramelo at gmail.com>
---
 lib/igt_aux.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/igt_aux.c b/lib/igt_aux.c
index 5dd2761e..06f586d6 100644
--- a/lib/igt_aux.c
+++ b/lib/igt_aux.c
@@ -1240,7 +1240,7 @@ static void igt_save_module_param(const char *name, const char *file_path)
 	data = calloc(1, sizeof (*data));
 	igt_assert(data);
 
-	strncpy(data->name, name, PARAM_NAME_MAX_SZ);
+	strncpy(data->name, name, PARAM_NAME_MAX_SZ - 1); // -1 because of '\0'
 
 	fd = open(file_path, O_RDONLY);
 	igt_assert(fd >= 0);
-- 
2.17.0