1 files changed, 15 insertions, 0 deletions
diff --git a/test/SemaCXX/compare.cpp b/test/SemaCXX/compare.cpp
new file mode 100644
index 0000000..806b078
--- /dev/null
+++ b/test/SemaCXX/compare.cpp
@@ -0,0 +1,15 @@
+// RUN: clang-cc -fsyntax-only -pedantic -verify %s
+
+int test0(long a, unsigned long b) {
+  enum Enum {B};
+  return (a == B) +        // expected-warning {{comparison of integers of different signs}}
+         ((int)a == B) +   // expected-warning {{comparison of integers of different signs}}
+         ((short)a == B) + // expected-warning {{comparison of integers of different signs}}
+         (a == (unsigned int) B) +  // expected-warning {{comparison of integers of different signs}}
+         (a == (unsigned short) B); // expected-warning {{comparison of integers of different signs}}         
+
+  // Should be able to prove all of these are non-negative.
+  return (b == (long) B) +
+         (b == (int) B) +
+         (b == (short) B);
+}