[all-commits] [llvm/llvm-project] a509a4: [LifetimeSafety] Enable C support by default under...

[Benedek Kaibas via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a509a4e98a50a2acc172a5f6eba77b8df020e3cd
      https://github.com/llvm/llvm-project/commit/a509a4e98a50a2acc172a5f6eba77b8df020e3cd
  Author: Benedek Kaibas <82393336+benedekaibas at users.noreply.github.com>
  Date:   2026-09-25 (Fri, 25 Sep 2026)

  Changed paths:
    M clang/docs/LifetimeSafety.md
    M clang/docs/ReleaseNotes.md
    M clang/include/clang/Basic/LangOptions.def
    M clang/include/clang/Options/Options.td
    M clang/lib/Driver/ToolChains/Clang.cpp
    A clang/test/Driver/flifetime-safety-c.c
    M clang/test/Sema/LifetimeSafety/annotation-suggestions-fixits.c
    M clang/test/Sema/LifetimeSafety/safety-c.c

  Log Message:
  -----------
  [LifetimeSafety] Enable C support by default under -Wlifetime-safety (#224028)

This PR extends the lifetime safety analysis to C. When the analysis is
enabled with `-Wlifetime-safety`, it now also runs on C code without the
extra `-fexperimental-lifetime-safety-c` flag.

I have renamed `-fexperimental-lifetime-safety-c` to
`-flifetime-safety-c` since it is on by default from now on. The
`-fno-lifetime-safety-c` flag disables the analysis for C. I have
updated the documentation and the release notes and rewrote the RUN
lines of the test cases that used the old flag.



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