1 // RUN: %clang_cc1 -triple x86_64-apple-darwin -emit-llvm -o - %s | FileCheck %s
2 
3 // C++-specific tests for __builtin_object_size
4 
5 int gi;
6 
7 // CHECK-LABEL: define void @_Z5test1v()
8 void test1() {
9   // Guaranteeing that our cast removal logic doesn't break more interesting
10   // cases.
11   struct A { int a; };
12   struct B { int b; };
13   struct C: public A, public B {};
14 
15   C c;
16 
17   // CHECK: store i32 8
18   gi = __builtin_object_size(&c, 0);
19   // CHECK: store i32 8
20   gi = __builtin_object_size((A*)&c, 0);
21   // CHECK: store i32 4
22   gi = __builtin_object_size((B*)&c, 0);
23 
24   // CHECK: store i32 8
25   gi = __builtin_object_size((char*)&c, 0);
26   // CHECK: store i32 8
27   gi = __builtin_object_size((char*)(A*)&c, 0);
28   // CHECK: store i32 4
29   gi = __builtin_object_size((char*)(B*)&c, 0);
30 }
31