[all-commits] [llvm/llvm-project] 676085: [lldb] Fix data race in statusline format handling...

[Jonas Devlieghere via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6760857bf3ad82a44c56d45a6a88a21b3fe521be
      https://github.com/llvm/llvm-project/commit/6760857bf3ad82a44c56d45a6a88a21b3fe521be
  Author: Jonas Devlieghere <jonas at devlieghere.com>
  Date:   2025-06-03 (Tue, 03 Jun 2025)

  Changed paths:
    M lldb/include/lldb/Core/Debugger.h
    M lldb/include/lldb/Core/FormatEntity.h
    M lldb/include/lldb/Interpreter/OptionValue.h
    M lldb/include/lldb/Target/Language.h
    M lldb/source/Core/Debugger.cpp
    M lldb/source/Core/Disassembler.cpp
    M lldb/source/Core/FormatEntity.cpp
    M lldb/source/Core/Statusline.cpp
    M lldb/source/Interpreter/OptionValue.cpp
    M lldb/source/Plugins/Language/CPlusPlus/CPlusPlusLanguage.cpp
    M lldb/source/Plugins/Language/CPlusPlus/CPlusPlusLanguage.h
    M lldb/source/Target/StackFrame.cpp
    M lldb/source/Target/Thread.cpp
    M lldb/source/Target/ThreadPlanTracer.cpp
    M lldb/unittests/Core/DebuggerTest.cpp

  Log Message:
  -----------
  [lldb] Fix data race in statusline format handling (#142489)

This fixes a data race between the main thread and the default event
handler thread. The statusline format option value was protected by a
mutex, but it was returned as a pointer, allowing one thread to access
it while another was modifying it.

Avoid the data race by returning format values by value instead of by
pointer.



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