1 files changed, 24 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/switch-4.c b/gcc/testsuite/gcc.dg/switch-4.c
new file mode 100644
index 000000000..f2d85300d
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/switch-4.c
@@ -0,0 +1,24 @@
+/* PR middle-end/17657 */
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+extern signed char foo(int);
+
+void bar (void)
+{
+  signed char tmp = foo (0);
+  int t1 = tmp;
+  switch (t1)
+    {
+    case 1: foo (1); break;
+    case 2: foo (2); break;
+    case 3: foo (3); break;
+    case 4: foo (4); break;
+    case 5: foo (5); break;
+    case 6: foo (6); break;
+    case 7: foo (7); break;
+    case 255: foo (8); break;
+    default: break;
+    }
+}
+