gh-127146: Emscripten: Fix pathlib glob_dotdot test #135624
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The Emscripten path resolver uses the same mechanism for resolving .. at a file system root as for resolving symlinks. This is because roots don't store their mountpoints. If the parent of a node is itself, it is a root but it might be a mountpoint in some other file system. Anyways, if a path has enough ..'s at the root, it will return ELOOP. Enough turns out to be 49.
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The Emscripten path resolver uses the same mechanism for resolving .. at a file system root as for resolving symlinks. This is because roots don't store their mountpoints. If the parent of a node is itself, it is a root but it might be a mountpoint in some other file system.
Anyways, if a path has enough ..'s at the root, it will return ELOOP. Enough turns out to be 49.
Upstream fix:
emscripten-core/emscripten#24591