1 files changed, 30 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/20030907-1.c b/gcc/testsuite/gcc.dg/tree-ssa/20030907-1.c
new file mode 100644
index 000000000..a36472d39
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/20030907-1.c
@@ -0,0 +1,30 @@
+/* PR optimization/12198
+
+   This was a miscompilation of a switch expressions because
+   the "Case Ranges" extension wasn't handled in tree-cfg.c.  */
+
+/* { dg-do compile } */
+/* { dg-options "-O -fdump-tree-optimized" } */
+
+extern void abort (void);
+extern void exit (int);
+
+int main() 
+{ 
+   int i; 
+   i = 2; 
+   switch (i) 
+      { 
+      case 1 ... 5: 
+         goto L1; 
+      default: 
+         abort (); 
+         goto L1; 
+      } 
+   L1: 
+   exit(0); 
+}
+
+/* The abort() call clearly is unreachable.  */
+/* { dg-final { scan-tree-dump-times "abort" 0 "optimized"} } */
+/* { dg-final { cleanup-tree-dump "optimized" } } */