1 files changed, 2 insertions, 1 deletions
diff --git a/bignum.c b/bignum.c
index ee3b49fd04..5285e5979e 100644
--- a/bignum.c
+++ b/bignum.c
@@ -2572,6 +2572,7 @@ bigdivrem1(void *ptr)
     return 0;
 }
 
+/* async-signal-safe */
 static void
 rb_big_stop(void *ptr)
 {
@@ -2636,7 +2637,7 @@ bigdivrem_restoring(BDIGIT *zds, size_t zn, BDIGIT *yds, size_t yn)
     if (bds.zn > 10000 || bds.yn > 10000) {
       retry:
 	bds.stop = Qfalse;
-	rb_thread_call_without_gvl(bigdivrem1, &bds, rb_big_stop, &bds);
+	rb_nogvl(bigdivrem1, &bds, rb_big_stop, &bds, RB_NOGVL_UBF_ASYNC_SAFE);
 
 	if (bds.stop == Qtrue) {
 	    /* execute trap handler, but exception was not raised. */