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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/112909] [14 Regression] glibc -Wuninitialized build
 failure for i686-gnu
Date: Fri, 08 Dec 2023 08:14:06 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D112909

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Reduced testcase:

struct machine_thread_all_state {
  int set;
} _hurd_setup_sighandler_state;
int _hurd_setup_sighandler_ss_0;
struct {
  int ctx;
} *_hurd_setup_sighandler_stackframe;
void _setjmp();
void __thread_get_state();
int machine_get_basic_state(struct machine_thread_all_state *state) {
  if (state->set)
    __thread_get_state();
  return 1;
}
int *_hurd_setup_sighandler() {
  int *scp;
  if (_hurd_setup_sighandler_ss_0) {
    _setjmp();
    _hurd_setup_sighandler_state.set |=3D 5;
  }
  machine_get_basic_state(&_hurd_setup_sighandler_state);
  scp =3D &_hurd_setup_sighandler_stackframe->ctx;
  _setjmp();
  return scp;
}=