Patch to keep clang honest that it does not yet support

explicit return type on block literals.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62240 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Parse/ParseExpr.cpp b/lib/Parse/ParseExpr.cpp
index 230abf823ce33e03c12dc178537bfaace0c7c8fa..0295f70633281519cbce4a1ab797ba1a355af7b8 100644 (file)
--- a/lib/Parse/ParseExpr.cpp
+++ b/lib/Parse/ParseExpr.cpp
@@ -1239,6 +1239,11 @@ Parser::OwningExprResult Parser::ParseBlockLiteralExpression() {
       Actions.ActOnBlockError(CaretLoc, CurScope);
     }
   }
+  else {
+    // Saw something like: ^expr
+    Diag(Tok, diag::err_expected_expression);
+    return ExprError();
+  }
   return move(Result);
 }
 

diff --git a/test/Sema/block-syntax-error.c b/test/Sema/block-syntax-error.c
new file mode 100644 (file)
index 0000000..c98f1fd
--- /dev/null
+++ b/test/Sema/block-syntax-error.c
@@ -0,0 +1,9 @@
+// RUN: clang %s -fsyntax-only -verify -fblocks
+
+void (^noop)(void);
+
+void somefunction() {
+  noop = ^int *{}; // expected-error {{expected expression}}
+
+  noop = ^noop;        // expected-error {{expected expression}}
+}