1956cf1042
Summary: This effectively reverts r188124, which added code to handle (DW_AT_)declarations of structures with some kinds of children as definitions. The commit message claims this is a workaround for some kind of debug info produced by gcc. However, it does not go into specifics, so it's hard to reproduce or verify that this is indeed still a problem. Having this code is definitely a problem though, because it mistakenly declares incomplete dwarf declarations to be complete. Both clang (with -flimit-debug-info) and gcc (by default) generate DW_AT_declarations of structs with children. This happens when full debug info for a class is not emitted in a given compile unit (e.g. because of vtable homing), but the class has inline methods which are used in the given compile unit. In that case, the compilers emit a DW_AT_declaration of a class, but add a DW_TAG_subprogram child to it to describe the inlined instance of the method. Even though the class tag has some children, it definitely does not contain enough information to construct a full class definition (most notably, it lacks any members). Keeping the class as incomplete allows us to search for a real definition in other modules, helping the -flimit-debug-info flow. And in case the definition is not found we can display a error message saying that, instead of just showing an empty struct. Reviewers: clayborg, aprantl, JDevlieghere, shafik Subscribers: lldb-commits Tags: #lldb Differential Revision: https://reviews.llvm.org/D83302
32 lines
675 B
C++
32 lines
675 B
C++
#include "onetwo.h"
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struct InheritsFromOne : One {
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constexpr InheritsFromOne() = default;
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int member = 47;
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} inherits_from_one;
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struct InheritsFromTwo : Two {
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constexpr InheritsFromTwo() = default;
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int member = 47;
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} inherits_from_two;
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struct OneAsMember {
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constexpr OneAsMember() = default;
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member::One one;
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int member = 47;
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} one_as_member;
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struct TwoAsMember {
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constexpr TwoAsMember() = default;
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member::Two two;
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int member = 47;
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} two_as_member;
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array::One array_of_one[3];
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array::Two array_of_two[3];
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result::One get_one() { return result::One(124); }
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result::Two get_two() { return result::Two(224); }
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int main() { return get_one().member; }
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