[gcc r15-10897] testsuite: Add testcase for PR [PR123882]

[Jakub Jelinek]

https://gcc.gnu.org/g:acc29d633b9da17627b96856e022944b24a7c279

commit r15-10897-gacc29d633b9da17627b96856e022944b24a7c279
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Thu Feb 5 15:17:56 2026 +0100

    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.
    
    (cherry picked from commit ce8a84ba6719a71365b611a94cc2454dd157f3b2)

Diff:
---
 gcc/testsuite/gcc.dg/pr123882.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/gcc/testsuite/gcc.dg/pr123882.c b/gcc/testsuite/gcc.dg/pr123882.c
new file mode 100644
index 000000000000..4b87552c9990
--- /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]);