1 files changed, 22 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/warn/Wuninitialized-5.C b/gcc/testsuite/g++.dg/warn/Wuninitialized-5.C
new file mode 100644
index 000000000..787d3c78f
--- /dev/null
+++ b/gcc/testsuite/g++.dg/warn/Wuninitialized-5.C
@@ -0,0 +1,22 @@
+// PR middle-end/39666
+// { dg-do compile }
+// { dg-options "-O2 -Wuninitialized" }
+
+int
+foo (int i)
+{
+  int j;
+  switch (i)
+    {
+    case -__INT_MAX__ - 1 ... -1:
+      j = 6;
+      break;
+    case 0:
+      j = 5;
+      break;
+    case 2 ... __INT_MAX__:
+      j = 4;
+      break;
+    }
+  return j;	// { dg-warning "may be used uninitialized" }
+}