llvm-project/clang/test/CodeGenObjC/objc2-write-barrier-3.m

// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fobjc-nonfragile-abi -fblocks -fobjc-gc -emit-llvm -o %t %s
// RUN: grep objc_assign_ivar %t | count 3
// RUN: grep objc_assign_strongCast %t | count 6
// RUN: %clang_cc1 -x objective-c++ -triple x86_64-apple-darwin10 -fobjc-nonfragile-abi -fblocks -fobjc-gc -emit-llvm -o %t %s
// RUN: grep objc_assign_ivar %t | count 3
// RUN: grep objc_assign_strongCast %t | count 6

struct Slice {
    void *__strong * items;
};

typedef struct Slice Slice;

@interface ISlice {
@public
    void *__strong * IvarItem;
}
@end

typedef void (^observer_block_t)(id object);
@interface Observer  {
@public
    observer_block_t block;
}
@end


void foo (int i) {
    // storing into an array of strong pointer types.
    void *__strong* items;
    items[i] = 0;

    // storing indirectly into an array of strong pointer types.
    void *__strong* *vitems;
    *vitems[i] = 0;

    Slice *slice;
    slice->items = 0;
    // storing into a struct element of an array of strong pointer types.
    slice->items[i] = 0;

    ISlice *islice;
    islice->IvarItem = 0;
    // Storing into an ivar of an array of strong pointer types.
    islice->IvarItem[i] = (void*)0;

    Observer *observer;
    observer->block = 0;
}