1 // RUN: %clang_cc1 -triple i686-linux-gnu %s -emit-llvm -o - | FileCheck %s
2
3 class A {
4 // append has to have the same prototype as fn1 to tickle the bug.
5 void (*append)(A *);
6 };
7
8 class B {};
9 class D;
10
11 // C has to be non-C++98 POD with available tail padding, making the LLVM base
12 // type differ from the complete LLVM type.
13 class C {
14 // This member creates a circular LLVM type reference to %class.D.
15 D *m_group;
16 B changeListeners;
17 };
18 class D : C {};
19
fn1(A * p1)20 void fn1(A *p1) {
21 }
22
23 void
fn2(C *)24 fn2(C *) {
25 }
26
27 // We end up using an opaque type for 'append' to avoid circular references.
28 // CHECK: %class.A = type { {}* }
29 // CHECK: %class.C = type <{ %class.D*, %class.B, [3 x i8] }>
30 // CHECK: %class.D = type { %class.C.base, [3 x i8] }
31 // CHECK: %class.C.base = type <{ %class.D*, %class.B }>
32 // CHECK: %class.B = type { i8 }
33