[Sema][ObjC] Check whether a DelayedDiagnosticPool has been pushed

before adding a delayed diagnostic to DelayedDiagnostics.

This fixes an assertion failure in Sema::DelayedDiagnostics::add that
was caused by the changes made in r141037.

rdar://problem/42782323

llvm-svn: 351911

1 files changed, 10 insertions, 0 deletions

diff --git a/clang/test/SemaObjCXX/arc-0x.mm b/clang/test/SemaObjCXX/arc-0x.mm
index 391fc47f342..d0f3284a180 100644
--- a/clang/test/SemaObjCXX/arc-0x.mm
+++ b/clang/test/SemaObjCXX/arc-0x.mm
@@ -101,3 +101,13 @@ namespace rdar12078752 {
     __autoreleasing auto o3 = o;
   }
 }
+
+namespace test_err_arc_array_param_no_ownership {
+  template <class T>
+  void func(T a) {}
+
+  void test() {
+    func([](A *a[]){}); // expected-error{{must explicitly describe intended ownership of an object array parameter}}
+    func(^(A *a[]){}); // expected-error{{must explicitly describe intended ownership of an object array parameter}}
+  }
+}