1 files changed, 25 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/switch-9.c b/gcc/testsuite/gcc.dg/switch-9.c
new file mode 100644
index 000000000..2ae89d095
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/switch-9.c
@@ -0,0 +1,25 @@
+/* PR middle-end/18859 */
+/* { dg-do compile } */
+/* { dg-options "" } */
+
+void foo(int a)
+{
+  switch (a)
+  {
+    case 0 ... -1:  /* { dg-warning "empty range" } */
+      a = a+2;
+      break;
+
+    case 1 ... 2:
+      a = 0;
+      break;
+
+    case 3 ... 4:
+      a = 1;
+      break;
+
+    case 5 ... 6:
+      a = 0;
+      break;
+  }
+}