[all-commits] [llvm/llvm-project] c24720: [NFC][libc++] Guard agains operator& hijacking.

[Mark de Wever via All-commits]

  Branch: refs/heads/users/mordante/operator_hijacking_not_exploitable
  Home:   https://github.com/llvm/llvm-project
  Commit: c24720b3ce9effb988baa849aefed1892b3ffc40
      https://github.com/llvm/llvm-project/commit/c24720b3ce9effb988baa849aefed1892b3ffc40
  Author: Mark de Wever <koraq at xs4all.nl>
  Date:   2025-02-26 (Wed, 26 Feb 2025)

  Changed paths:
    M libcxx/include/__atomic/atomic.h
    M libcxx/include/__atomic/atomic_ref.h
    M libcxx/include/__charconv/traits.h
    M libcxx/include/__filesystem/path.h
    M libcxx/include/__functional/hash.h
    M libcxx/include/__iterator/aliasing_iterator.h
    M libcxx/include/__locale
    M libcxx/include/__mdspan/layout_left.h
    M libcxx/include/__mdspan/layout_right.h
    M libcxx/include/__mdspan/layout_stride.h
    M libcxx/include/__mdspan/mdspan.h
    M libcxx/include/__memory/shared_count.h
    M libcxx/include/__ostream/basic_ostream.h
    M libcxx/include/__split_buffer
    M libcxx/include/__stop_token/intrusive_shared_ptr.h
    M libcxx/include/__string/constexpr_c_functions.h
    M libcxx/include/__thread/thread.h
    M libcxx/include/cwchar
    M libcxx/include/fstream
    M libcxx/include/future
    M libcxx/include/locale
    M libcxx/include/regex
    M libcxx/include/string

  Log Message:
  -----------
  [NFC][libc++] Guard agains operator& hijacking.

This set usage of operator& instead of std::addressof seems not be easy to
"abuse". Some seem easy to misuse, like basic_ostream::operator<<, trying
to do that results in compilation errors since the `widen` function is not
specialized for the hijacking character type. Hence there are no tests.



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