[all-commits] [llvm/llvm-project] 236383: [libc][realpath] Validate path components.

[Jackson Stogel via All-commits]

  Branch: refs/heads/users/jtstogel/realpath/relative-paths
  Home:   https://github.com/llvm/llvm-project
  Commit: 236383b38e2459967c4350caf0c28afbb2eb9180
      https://github.com/llvm/llvm-project/commit/236383b38e2459967c4350caf0c28afbb2eb9180
  Author: jtstogel <jtstogel at gmail.com>
  Date:   2026-07-13 (Mon, 13 Jul 2026)

  Changed paths:
    M libc/src/stdlib/linux/CMakeLists.txt
    M libc/src/stdlib/linux/realpath.cpp
    M libc/test/src/stdlib/realpath_test.cpp

  Log Message:
  -----------
  [libc][realpath] Validate path components.

This PR updates `realpath` to validate paths and return `ENOTDIR` or `ENOENT` according to https://pubs.opengroup.org/onlinepubs/9699919799/functions/realpath.html.

This PR also bumps the memory limit in `HermeticTestUtils.cpp`. The realpath unit tests allocate quite a few strings. Since memory in hermetic tests is never free'd, the unit test quickly reaches the limit.


  Commit: 028c709510105dccab0a76cd43ebe191920a0f59
      https://github.com/llvm/llvm-project/commit/028c709510105dccab0a76cd43ebe191920a0f59
  Author: jtstogel <jtstogel at gmail.com>
  Date:   2026-07-13 (Mon, 13 Jul 2026)

  Changed paths:
    M libc/src/stdlib/linux/CMakeLists.txt
    M libc/src/stdlib/linux/realpath.cpp
    M libc/test/src/stdlib/CMakeLists.txt
    M libc/test/src/stdlib/realpath_test.cpp

  Log Message:
  -----------
  [libc][realpath] Support relative paths


Compare: https://github.com/llvm/llvm-project/compare/89bdc0f7809d...028c70951010

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