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authorMiss Islington (bot) <31488909+miss-islington@users.noreply.github.com>2022-09-08 10:47:07 (GMT)
committerGitHub <noreply@github.com>2022-09-08 10:47:07 (GMT)
commit3d6e6beb0d85f064a19e60012d140b5bc4ea0cca (patch)
treec8a0ff036b1bb1c14cf381719be34f299b2ac90f /Modules
parenta3d5ecba1c6a5533b4c25d86d5861245010b9a65 (diff)
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gh-96652: Fix faulthandler chained signal without sigaction() (GH-96666)
Fix the faulthandler implementation of faulthandler.register(signal, chain=True) if the sigaction() function is not available: don't call the previous signal handler if it's NULL. (cherry picked from commit c580a81af91af4b9df85e466f8b48c3c9c86c3df) Co-authored-by: Victor Stinner <vstinner@python.org>
Diffstat (limited to 'Modules')
-rw-r--r--Modules/faulthandler.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/Modules/faulthandler.c b/Modules/faulthandler.c
index 3026bb6..4847c1c 100644
--- a/Modules/faulthandler.c
+++ b/Modules/faulthandler.c
@@ -862,7 +862,7 @@ faulthandler_user(int signum)
errno = save_errno;
}
#else
- if (user->chain) {
+ if (user->chain && user->previous != NULL) {
errno = save_errno;
/* call the previous signal handler */
user->previous(signum);