<rdar://problem/7263113> Make clang produce gcc's objc_assign_StrongCast as a result of type-cast of an ivar in assignment.

llvm-svn: 83150

1 files changed, 27 insertions, 0 deletions

diff --git a/clang/test/CodeGenObjC/objc2-write-barrier-5.m b/clang/test/CodeGenObjC/objc2-write-barrier-5.m
new file mode 100644
index 00000000000..5b8f02cc1e1
--- /dev/null
+++ b/clang/test/CodeGenObjC/objc2-write-barrier-5.m
@@ -0,0 +1,27 @@
+// RUN: clang-cc -triple x86_64-apple-darwin10 -fobjc-gc -emit-llvm -o %t %s &&
+// RUN: grep objc_assign_ivar %t | count 0 &&
+// RUN: grep objc_assign_strongCast %t | count 5 &&
+// RUN: true
+
+@interface TestUnarchiver 
+{
+	void  *allUnarchivedObjects;
+}
+@end
+
+@implementation TestUnarchiver
+
+struct unarchive_list {
+    int ifield;
+    id *list;
+};
+
+- (id)init {
+    (*((struct unarchive_list *)allUnarchivedObjects)).list = 0;
+    ((struct unarchive_list *)allUnarchivedObjects)->list = 0;
+    (**((struct unarchive_list **)allUnarchivedObjects)).list = 0;
+    (*((struct unarchive_list **)allUnarchivedObjects))->list = 0;
+    return 0;
+}
+
+@end