30 lines
1.2 KiB
C++
30 lines
1.2 KiB
C++
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// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin -debug-info-kind=limited -emit-llvm -o - | FileCheck %s
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// This test is for a crash when emitting debug info for not-yet-completed
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// types.
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// Test that we don't actually emit a forward decl for the offending class:
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// CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "Derived<int>"
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// CHECK-NOT: DIFlagFwdDecl
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// CHECK-SAME: ){{$}}
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// rdar://problem/15931354
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template <class A> class Derived;
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template <class A> class Base {
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static Derived<A> *create();
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};
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template <class A> struct Derived : Base<A> {
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};
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Base<int> *f;
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// During the instantiation of Derived<int>, Base<int> becomes required to be
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// complete - since the declaration has already been emitted (due to 'f',
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// above), we immediately try to build debug info for Base<int> which then
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// requires the (incomplete definition) of Derived<int> which is problematic.
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//
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// (if 'f' is not present, the point at which Base<int> becomes required to be
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// complete during the instantiation of Derived<int> is a no-op because
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// Base<int> was never emitted so we ignore it and carry on until we
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// wire up the base class of Derived<int> in the debug info later on)
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Derived<int> d;
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