[all-commits] [llvm/llvm-project] 450f19: [clang][UBSan] Add implicit conversion check for b...

[Axel Lundberg via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 450f1952aced87584a53485d1ba1c2f77c3835a1
      https://github.com/llvm/llvm-project/commit/450f1952aced87584a53485d1ba1c2f77c3835a1
  Author: Axel Lundberg <19574357+Zonotora at users.noreply.github.com>
  Date:   2024-04-03 (Wed, 03 Apr 2024)

  Changed paths:
    M clang/docs/ReleaseNotes.rst
    M clang/docs/UndefinedBehaviorSanitizer.rst
    M clang/include/clang/Basic/Sanitizers.def
    M clang/lib/CodeGen/CGExpr.cpp
    M clang/lib/CodeGen/CGExprScalar.cpp
    M clang/lib/CodeGen/CodeGenFunction.h
    A clang/test/CodeGen/ubsan-bitfield-conversion.c
    A clang/test/CodeGenCXX/ubsan-bitfield-conversion.cpp
    M clang/test/Driver/fsanitize.c
    M compiler-rt/lib/ubsan/ubsan_handlers.cpp
    M compiler-rt/lib/ubsan/ubsan_handlers.h

  Log Message:
  -----------
  [clang][UBSan] Add implicit conversion check for bitfields (#75481)

This patch implements the implicit truncation and implicit sign change
checks for bitfields using UBSan. E.g.,
`-fsanitize=implicit-bitfield-truncation` and
`-fsanitize=implicit-bitfield-sign-change`.



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