faulthandler: fix the handler of user signals
Restore the errno before calling the previous signal handler, and not after.
diff --git a/Modules/faulthandler.c b/Modules/faulthandler.c
index 469e490..4aa9124 100644
--- a/Modules/faulthandler.c
+++ b/Modules/faulthandler.c
@@ -659,17 +659,22 @@
#ifdef HAVE_SIGACTION
if (user->chain) {
(void)sigaction(signum, &user->previous, NULL);
+ errno = save_errno;
+
/* call the previous signal handler */
raise(signum);
+
+ save_errno = errno;
(void)faulthandler_register(signum, user->chain, NULL);
+ errno = save_errno;
}
#else
if (user->chain) {
+ errno = save_errno;
/* call the previous signal handler */
user->previous(signum);
}
#endif
- errno = save_errno;
}
static int