Add noreturn support for blocks.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77377 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Sema/block-return-1.c b/test/Sema/block-return-1.c
new file mode 100644
index 0000000..2da8735
--- /dev/null
+++ b/test/Sema/block-return-1.c
@@ -0,0 +1,6 @@
+// RUN: clang-cc -fsyntax-only %s -verify -fblocks
+
+int j;
+void foo() {
+  ^ (void) { if (j) return 1; }(); // expected-error {{control may reach end of non-void block}}
+}