https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83429
--- Comment #2 from Daniel Fruzynski <bugzi...@poradnik-webmastera.com> ---
Sometimes actual location is not reported at all:
[code]
#include <stdio.h>
#include <string.h>
struct S
{
char* str;
int n;
char out[10];
};
void test(S* s)
{
if (s->str)
snprintf(s->out, sizeof(s->out), "%d", s->n);
else
snprintf(s->out, sizeof(s->out), ".%s", s->str);
}
[/code]
[out]
test.cc: In function ‘void test(S*)’:
test.cc:11:6: warning: ‘%s’ directive argument is null [-Wformat-truncation=]
void test(S* s)
^~~~
[/out]
