test/CodeGenObjC/blocks-1.m

// RUN: clang-cc %s -emit-llvm -o %t -fobjc-gc -fblocks &&
// RUN: grep "_Block_object_dispose" %t | count 4 &&
// RUN: grep "__copy_helper_block_" %t | count 2 &&
// RUN: grep "__destroy_helper_block_" %t | count 2 &&
// RUN: grep "__Block_byref_id_object_copy_" %t | count 2 &&
// RUN: grep "__Block_byref_id_object_dispose_" %t | count 2 &&
// RUN: grep "i32 135)" %t | count 0 &&
// RUN: grep "_Block_object_assign" %t | count 3 &&
// RUN: grep "objc_read_weak" %t | count 2 &&
// RUN: grep "objc_assign_weak" %t | count 2

@interface NSDictionary @end

void test1(NSDictionary * dict) {
  ^{ (void)dict; }();
}

@interface D
@end

void foo() {
  __block __weak D *weakSelf;
  D *l;
  l = weakSelf;
  weakSelf = l;
}