Emit an error for enum increments and decrements in C++ mode.

Fixes PR16394.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@187955 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 13 insertions, 0 deletions

diff --git a/test/Sema/enum-increment.c b/test/Sema/enum-increment.c
new file mode 100644
index 0000000000..baaa3489b9
--- /dev/null
+++ b/test/Sema/enum-increment.c
@@ -0,0 +1,13 @@
+// RUN: %clang_cc1 -fsyntax-only %s -verify
+// expected-no-diagnostics
+enum A { A1, A2, A3 };
+typedef enum A A;
+void test() {
+  A a;
+  a++;
+  a--;
+  ++a;
+  --a;
+  a = a + 1;
+  a = a - 1;
+}