testsuite: Add testcase for PR [PR123882]

I've reverted the PR101312 changes in order to fix this PR.
Here I'm just adding new testcase.

2026-02-05  Jakub Jelinek  <jakub@redhat.com>

	PR c/123882
	* gcc.dg/pr123882.c: New test.

diff --git a/gcc/testsuite/gcc.dg/pr123882.c b/gcc/testsuite/gcc.dg/pr123882.c
new file mode 100644 (file)
index 0000000..4b87552
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr123882.c
@@ -0,0 +1,7 @@
+/* PR c/123882 */
+/* { dg-do compile } */
+/* { dg-options "-std=c23" } */
+
+typedef int T;
+void foo (unsigned long, T[]);
+void foo (unsigned long x, T[restrict x]);