[all-commits] [llvm/llvm-project] 430b25: [Clang] Do not attempt to access the `DefinitionDa...

[Oleksandr T. via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 430b2545032db9de7898444502915f89e20f7c4c
      https://github.com/llvm/llvm-project/commit/430b2545032db9de7898444502915f89e20f7c4c
  Author: Oleksandr T. <oleksandr.tarasiuk at outlook.com>
  Date:   2024-07-23 (Tue, 23 Jul 2024)

  Changed paths:
    M clang/docs/ReleaseNotes.rst
    M clang/lib/AST/DeclCXX.cpp
    M clang/test/CXX/temp/temp.arg/temp.arg.template/p3-0x.cpp

  Log Message:
  -----------
  [Clang] Do not attempt to access the `DefinitionData` of an incomplete type (#99998)

We were asserting here because we were trying to access the 
`DefinitionData` of an incomplete type in the `Visit` lambda in 
`CXXRecordDecl::hasSubobjectAtOffsetZeroOfEmptyBaseType`.

The code that creates `FieldDecl`s always marks them as invalid 
if their type is incomplete, so checking whether the field decl 
whose type we’re about to look at is invalid fixes this issue.

Fixes #99868.



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