Fix a crash-on-valid where a block capture copy expression was

picking up cleanups from earlier in the statement.  Also fix a
crash-on-invalid where a reference to an invalid decl from an
enclosing scope was causing an expression to fail to build, but
only *after* a cleanup was registered from that statement,
causing an assertion downstream.

The crash-on-valid is rdar://13459289.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177692 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 19 insertions, 1 deletions

diff --git a/test/SemaCXX/blocks.cpp b/test/SemaCXX/blocks.cpp
index a635e998d9..a2672d13b7 100644
--- a/test/SemaCXX/blocks.cpp
+++ b/test/SemaCXX/blocks.cpp
@@ -1,5 +1,4 @@
 // RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s -fblocks
-// expected-no-diagnostics
 
 void tovoid(void*);
 
@@ -82,3 +81,22 @@ void move_block() {
   __block MoveOnly mo;
 }
 
+// Don't crash after failing to build a block due to a capture of an
+// invalid declaration.
+namespace test5 {
+  struct B { // expected-note 2 {{candidate constructor}}
+    void *p;
+    B(int); // expected-note {{candidate constructor}}
+  };
+
+  void use_block(void (^)());
+  void use_block_2(void (^)(), const B &a);
+
+  void test() {
+    B x; // expected-error {{no matching constructor for initialization}}
+    use_block(^{
+        int y;
+        use_block_2(^{ (void) y; }, x);
+      });
+  }
+}