objectiveC blocks: It is impractical to capture

struct variables with flexiable array members in
blocks (and lambdas). Issue error instead of
crashing in IRGen. // rdar://12655829

llvm-svn: 171912

1 files changed, 9 insertions, 0 deletions

diff --git a/clang/test/SemaObjCXX/capturing-flexible-array-in-block.mm b/clang/test/SemaObjCXX/capturing-flexible-array-in-block.mm
new file mode 100644
index 00000000000..4899c4653a6
--- /dev/null
+++ b/clang/test/SemaObjCXX/capturing-flexible-array-in-block.mm
@@ -0,0 +1,9 @@
+// RUN: %clang_cc1 -fsyntax-only -fblocks -verify -std=c++11 %s
+// rdar://12655829
+
+void f() {
+  struct { int x; int y[]; } a; // expected-note 2 {{'a' declared here}}
+  ^{return a.x;}(); // expected-error {{cannot refer to declaration of structure variable with flexible array member inside block}}
+
+  [] {return a.x;}(); // expected-error {{variable 'a' with flexible array member cannot be captured in a lambda expression}}
+}