testsuite: Add testcase for already fixed PR [PR119226]

This was fixed in PR119219 r15-7981 commit.

2025-03-12  Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/119226
	* gcc.c-torture/compile/pr119226.c: New test.

diff --git a/gcc/testsuite/gcc.c-torture/compile/pr119226.c b/gcc/testsuite/gcc.c-torture/compile/pr119226.c
new file mode 100644 (file)
index 0000000..8eb9857
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/compile/pr119226.c
@@ -0,0 +1,12 @@
+/* PR middle-end/119226 */
+
+char a[64];
+void bar (void);
+
+void
+foo (int x)
+{
+  char *b = a + __builtin_strcspn (a, x ? "" : "ab");
+  if (b[0])
+    bar ();
+}