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add a visualizer for _Ref_count_obj_alloc3 and _Ref_count_obj2 #2811

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Jun 25, 2022
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23 changes: 23 additions & 0 deletions stl/debugger/STL.natvis
Original file line number Diff line number Diff line change
Expand Up @@ -371,6 +371,14 @@ SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
</Expand>
</Type>

<!-- VS 2019 16.3 -->
<Type Name="std::_Ref_count_obj2&lt;*&gt;">
<DisplayString>make_shared</DisplayString>
<Expand>
<Item Condition="_Uses != 0" Name="[original ptr]">($T1 *) &amp;_Storage</Item>
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Can we add a fixed string to a _Uses == 0 condition?

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Why would we need to show a child item for an empty shared_ptr? (weak_ptrs will display themselves as expired, IIRC)

</Expand>
</Type>

<!-- VC 2015 -->
<Type Name="std::_Ref_count_obj_alloc&lt;*&gt;">
<DisplayString>allocate_shared</DisplayString>
Expand All @@ -380,6 +388,21 @@ SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
</Expand>
</Type>

<!-- VS 2019 16.7: _Ref_count_obj_alloc3 -->
<!-- VS 2019 16.3: _Ref_count_obj_alloc2 -->
<Type Name="std::_Ref_count_obj_alloc3&lt;*&gt;">
<AlternativeType Name="std::_Ref_count_obj_alloc2&lt;*&gt;" />
<!-- stateless allocator -->
<Intrinsic Optional="true" Name="allocator" Expression="*((_Mybase *) this)"/>
<!-- stateful allocator -->
<Intrinsic Optional="true" Name="allocator" Expression="_Myval"/>
<DisplayString>allocate_shared</DisplayString>
<Expand>
<Item Condition="_Uses != 0" Name="[original ptr]">($T1 *) &amp;_Storage</Item>
<Item Name="[allocator]">allocator()</Item>
</Expand>
</Type>

<!-- VC 2017, second toolset update -->
<Type Name="std::_Ref_count_resource&lt;*&gt;">
<DisplayString>custom deleter</DisplayString>
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