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Most of the cases were where a C++ file was being compiled with the C substitution.
There were a few cases of the opposite though.
LLDB seems to be the only real culprit in the LLVM codebase for these mismatches.
Rest of the LLVM presumably sticks at least language-specific options in the common substitutions
making the mistakes immediately apparent.
I found these by using Clang frontend configuration files containing language-specific options for
both C and C++ (e.g. `-std=c2y` and `-std=c++26`).
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Following up from https://github.com/llvm/llvm-project/pull/112928, we
can reuse the approach from Clang Sema to infer the MSInheritanceModel
and add the necessary attribute manually. This allows the inspection of
member function pointers with DWARF on Windows.
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(#112928)
Member pointers refer to data or function members of a `CXXRecordDecl`,
which require a `MSInheritanceAttr` in order to be complete. Without that
we cannot calculate the size of a member pointer in memory. The attempt
has been causing a crash further down in the clang AST context. In order
to implement the feature, DWARF will need a new attribtue to convey the
information. For the moment, this patch teaches LLDB to handle to
situation and avoid the crash.
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DWARF on Windows" (#113498)
Reverts llvm/llvm-project#112928
This is because it broke greendragon:
SymbolFile/DWARF/x86/member-pointers.cpp
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Member pointers refer to data or function members of a `CXXRecordDecl` and
require a `MSInheritanceAttr` in order to be complete. Without that we
cannot calculate their size in memory. The attempt has been causing a crash
further down in the clang AST context. In order to implement the feature,
DWARF will need a new attribtue to convey the information. For the moment,
this patch teaches LLDB to handle to situation and avoid the crash.
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