1 // RUN: %clang_cc1 %s -triple=x86_64-apple-darwin -debug-info-kind=limited -emit-llvm -o - | FileCheck %s 2 // This test is for a crash when emitting debug info for not-yet-completed 3 // types. 4 // Test that we don't actually emit a forward decl for the offending class: 5 // CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "Derived<int>" 6 // CHECK-NOT: DIFlagFwdDecl 7 // CHECK-SAME: ){{$}} 8 // rdar://problem/15931354 9 template <class A> class Derived; 10 11 template <class A> class Base { 12 static Derived<A> *create(); 13 }; 14 15 template <class A> struct Derived : Base<A> { 16 }; 17 18 Base<int> *f; 19 20 // During the instantiation of Derived<int>, Base<int> becomes required to be 21 // complete - since the declaration has already been emitted (due to 'f', 22 // above), we immediately try to build debug info for Base<int> which then 23 // requires the (incomplete definition) of Derived<int> which is problematic. 24 // 25 // (if 'f' is not present, the point at which Base<int> becomes required to be 26 // complete during the instantiation of Derived<int> is a no-op because 27 // Base<int> was never emitted so we ignore it and carry on until we 28 // wire up the base class of Derived<int> in the debug info later on) 29 Derived<int> d; 30
