https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113604
--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Thanks, I'll add
--- gcc/testsuite/gcc.dg/torture/bitint-55.c.jj 2024-01-27 18:08:50.291929969
+0100
+++ gcc/testsuite/gcc.dg/torture/bitint-55.c 2024-01-27 18:07:59.266636007
+0100
@@ -0,0 +1,50 @@
+/* PR libgcc/113604 */
+/* { dg-do run { target bitint } } */
+/* { dg-options "-std=c23 -pedantic-errors" } */
+/* { dg-skip-if "" { ! run_expensive_tests } { "*" } { "-O0" "-O2" } } */
+/* { dg-skip-if "" { ! run_expensive_tests } { "-flto" } { "" } } */
+
+#if __BITINT_MAXWIDTH__ >= 513
+signed _BitInt(513)
+foo (signed _BitInt(513) x, signed _BitInt(513) y)
+{
+ return x % y;
+}
+#endif
+
+#if __BITINT_MAXWIDTH__ >= 512
+unsigned _BitInt(512)
+bar (unsigned _BitInt(512) x, unsigned _BitInt(512) y)
+{
+ return x % y;
+}
+#endif
+
+#if __BITINT_MAXWIDTH__ >= 256
+unsigned _BitInt(256)
+baz (unsigned _BitInt(256) x, unsigned _BitInt(256) y)
+{
+ return x % y;
+}
+#endif
+
+int
+main ()
+{
+#if __BITINT_MAXWIDTH__ >= 513
+ if (foo
(11155754932722990178552651944728825929130437979239421228991532051555943675wb,
+ 32783817256434357484609367438786815wb) != 0wb)
+ __builtin_abort ();
+#endif
+#if __BITINT_MAXWIDTH__ >= 512
+ if (bar
(6703903964971298549787012499102923063739682910296196688861780721860882015036773488400937149083451713845015929093243025426876941405973284973216824503042048uwb,
+ 170141183460469231731687303715884105735uwb) != 19208uwb)
+ __builtin_abort ();
+#endif
+#if __BITINT_MAXWIDTH__ >= 256
+ if (baz
(115792089237316195423570985008687907853269984665640564039457584007913129639926uwb,
+ 68056473384187692692674921486353642292uwb) != 6uwb)
+ __builtin_abort ();
+#endif
+ return 0;
+}
to the patch then.
