[all-commits] [llvm/llvm-project] 4a73c9: [clang][Modules] Fix the Size of `RecordDecl`'s `B...

[Qiongsi Wu via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4a73c99329ed36712a6faa8e37aa895cfeac23ce
      https://github.com/llvm/llvm-project/commit/4a73c99329ed36712a6faa8e37aa895cfeac23ce
  Author: Qiongsi Wu <qiongsiwu at gmail.com>
  Date:   2025-04-01 (Tue, 01 Apr 2025)

  Changed paths:
    M clang/lib/Serialization/ASTWriterDecl.cpp

  Log Message:
  -----------
  [clang][Modules] Fix the Size of `RecordDecl`'s `BitCodeAbbrevOp` (#133500)

https://github.com/llvm/llvm-project/pull/102040/files#diff-125f472e690aa3d973bc42aa3c5d580226c5c47661551aca2889f960681aa64dR2477
added 1 bit to `RecordDecl`'s serialization format, but did not
increment its abbreviation size.

This can lead to rare cases where a record may overflow if the
`RecordDecl`'s `getArgPassingRestrictions()` returns something bigger
than 1 (see
[here](https://github.com/llvm/llvm-project/blob/b3f01a6aa45b00240cec1c64286b85d7ba87e2af/clang/lib/Serialization/ASTWriterDecl.cpp#L688)).

rdar://143763558



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