[all-commits] [llvm/llvm-project] 7aa8ec: [Driver][CFI] Allow CFI with minimal runtime (#137...

[Vitaly Buka via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 7aa8ece256e937d266bb66936cbe99d379c0f77f
      https://github.com/llvm/llvm-project/commit/7aa8ece256e937d266bb66936cbe99d379c0f77f
  Author: Vitaly Buka <vitalybuka at google.com>
  Date:   2025-04-25 (Fri, 25 Apr 2025)

  Changed paths:
    M clang/lib/Driver/SanitizerArgs.cpp
    M clang/test/Driver/fsanitize.c
    M clang/test/Driver/sanitizer-ld.c

  Log Message:
  -----------
  [Driver][CFI] Allow CFI with minimal runtime (#137103)

It was introduced with original "minimal runtime"
patch without explanation:
https://reviews.llvm.org/D36810#:~:text=if%20(-,NonTrappingCfi,-)

Note, the same commit contains `cfi_check_fail` handler,
which can not be reached with `-fsanitize-trap=cfi`.

This patch makes CFI min runtime behavior consistent with UBSAN:
`-fsanitize-trap=` ignores `-fsanitize-minimal-runtime`,
`-fno-sanitize-trap=` with `-fsanitize-minimal-runtime` compiles and
link
minimal runtime.



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