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| author | Bruno Cardoso Lopes <bruno.cardoso@gmail.com> | 2021-06-22 15:14:26 -0700 |
|---|---|---|
| committer | Bruno Cardoso Lopes <bruno.cardoso@gmail.com> | 2021-06-22 17:26:05 -0700 |
| commit | c9aaf34b8db884faa3d3ced4d2fb88fd45697408 (patch) | |
| tree | 401dbfe5c9026754bea3fc300c699f6eca51349f /clang/lib/Frontend/CompilerInvocation.cpp | |
| parent | 5c8659801a4976ef2b327f4071d98086efd42a36 (diff) | |
| download | llvm-c9aaf34b8db884faa3d3ced4d2fb88fd45697408.zip llvm-c9aaf34b8db884faa3d3ced4d2fb88fd45697408.tar.gz llvm-c9aaf34b8db884faa3d3ced4d2fb88fd45697408.tar.bz2 | |
[SemaCXX] Handle lack of TypeSourceInfo on special member functions in templated lambdas
During template instantiation involving templated lambdas, clang
could hit an assertion in `TemplateDeclInstantiator::SubstFunctionType`
since the functions are not associated with any `TypeSourceInfo`:
`assert(OldTInfo && "substituting function without type source info");`
This path is triggered when using templated lambdas like the one added as
a test to this patch. To fix this:
- Create `TypeSourceInfo`s for special members and make sure the template
instantiator can get through all patterns.
- Introduce a `SpecialMemberTypeInfoRebuilder` tree transform to rewrite
such member function arguments. Without this, we get errors like:
`error: only special member functions and comparison operators may be defaulted`
since `getDefaultedFunctionKind` can't properly recognize these functions
as special members as part of `SetDeclDefaulted`.
Fixes PR45828 and PR44848
Differential Revision: https://reviews.llvm.org/D88327
Diffstat (limited to 'clang/lib/Frontend/CompilerInvocation.cpp')
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