https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104550
--- Comment #1 from qinzhao at gcc dot gnu.org ---
Kees reported the following issue with -ftrivial-auto-var-init=pattern. the
testing case was reduced from Kernel building.
$ cat warns.i
struct vx_audio_level {
int has_monitor_level : 1;
};
void vx_set_monitor_level() {
struct vx_audio_level info;
}
$ gcc -Wall -Wno-unused-variable -ftrivial-auto-var-init=zero -c -o /dev/null
warns.i
$ gcc -Wall -Wno-unused-variable -ftrivial-auto-var-init=pattern -c -o
/dev/null warns.i
warns.i: In function 'vx_set_monitor_level':
warns.i:6:25: warning: 'info' is used uninitialized [-Wuninitialized]
6 | struct vx_audio_level info;
| ^~~~
warns.i:6:25: note: 'info' declared here
6 | struct vx_audio_level info;
| ^~~~
