e0ac46e69d
This reverts commit d618f1c3b12effd0c2bdb7d02108d3551f389d3d. This commit wasn't reviewed ahead of time and significant concerns were raised immediately after it landed. According to our developer policy this warrants immediate revert of the commit. https://llvm.org/docs/DeveloperPolicy.html#patch-reversion-policy Differential Revision: https://reviews.llvm.org/D155509
30 lines
1.2 KiB
C++
30 lines
1.2 KiB
C++
// 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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