Add -fblocks

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73804 91177308-0d34-0410-b5e6-96231b3b80d8

test/Sema/warn-unused-parameters.c

@@ -1,4 +1,4 @@
-// RUN: clang -fsyntax-only -Wunused-parameter %s -Xclang -verify
+// RUN: clang -fblocks -fsyntax-only -Wunused-parameter %s -Xclang -verify
 
 int f0(int x,
        int y, // expected-warning{{unused}}
@@ -10,4 +10,4 @@ void f1() {
   (void)^(int x,
           int y, // expected-warning{{unused}}
           int z __attribute__((unused))) { return x; };
-}
+}