Fixup parsing for (throw,throw) and __extension__ throw 1.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71897 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Parser/cxx-throw.cpp b/test/Parser/cxx-throw.cpp
new file mode 100644
index 0000000..968ef46
--- /dev/null
+++ b/test/Parser/cxx-throw.cpp
@@ -0,0 +1,16 @@
+// RUN: clang-cc -fsyntax-only -verify %s
+
+int i;
+
+void foo() {
+  (throw,throw);
+  (1 ? throw 1 : throw 2);
+  throw int(1);
+  throw;
+  throw 1;
+  throw;
+  1 ? throw : (void)42;
+  // gcc doesn't parse the below, but we do
+  __extension__ throw 1;
+  (void)throw;              // expected-error {{expected expression}}
+}