Issue #12060: Use sig_atomic_t type and volatile keyword in the signal module.
Patch written by Charles-François Natali.
diff --git a/Modules/signalmodule.c b/Modules/signalmodule.c
index 1429770..5a6c777 100644
--- a/Modules/signalmodule.c
+++ b/Modules/signalmodule.c
@@ -78,12 +78,12 @@
static pid_t main_pid;
#endif
-static struct {
- int tripped;
+static volatile struct {
+ sig_atomic_t tripped;
PyObject *func;
} Handlers[NSIG];
-static sig_atomic_t wakeup_fd = -1;
+static volatile sig_atomic_t wakeup_fd = -1;
/* Speed up sigcheck() when none tripped */
static volatile sig_atomic_t is_tripped = 0;