Add a test for C++ [stmt.select]p3, which specifies that redeclaring a

name in the outermost block of a if/else that declares the same name
is ill-formed. Turns out that Clang and MSVC were right about PR6739;
GCC is too lax.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99937 91177308-0d34-0410-b5e6-96231b3b80d8

Author: DougGregor

Diff for: test/CXX/stmt.stmt/stmt.select/p3.cpp

@@ -0,0 +1,11 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+
+int f();
+
+void g() {
+  if (int x = f()) { // expected-note 2{{previous definition}}
+    int x; // expected-error{{redefinition of 'x'}}
+  } else {
+    int x; // expected-error{{redefinition of 'x'}}
+  }
+}