For some reason GCC 14.1.1 on Fedora 41 assumes that format can
be NULL and emits a warning:
lib/util.c: In function 'xvasprintf':
lib/util.c:229:14: error: null format string
229 | needed = vsnprintf(NULL, 0, format, args);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
I didn't find any users where this can be true. Adding an
assertion to silence the warning. In the worst case we'll
find out where it is being called incorrectly.
Signed-off-by: Ilya Maximets <[email protected]>
---
lib/util.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/lib/util.c b/lib/util.c
index 5253921b2..bdd6408b2 100644
--- a/lib/util.c
+++ b/lib/util.c
@@ -225,6 +225,8 @@ xvasprintf(const char *format, va_list args)
size_t needed;
char *s;
+ ovs_assert(format);
+
va_copy(args2, args);
needed = vsnprintf(NULL, 0, format, args);
--
2.45.2
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