https://github.com/python/cpython/commit/e4ccd46bf75fff2938d7c21c7284e49b0ab795b0
commit: e4ccd46bf75fff2938d7c21c7284e49b0ab795b0
branch: main
author: Hood Chatham <roberthoodchat...@gmail.com>
committer: freakboy3742 <russ...@keith-magee.com>
date: 2025-06-18T11:20:43+08:00
summary:
gh-127146: Emscripten: Fix pathlib glob_dotdot test (#135624)
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.
If a path has enough `..`'s at the root, it will return ELOOP.
Enough turns out to be 49.
files:
M Lib/test/test_pathlib/test_pathlib.py
diff --git a/Lib/test/test_pathlib/test_pathlib.py
b/Lib/test/test_pathlib/test_pathlib.py
index 13356b4cfe082b..b2e2cdb3338beb 100644
--- a/Lib/test/test_pathlib/test_pathlib.py
+++ b/Lib/test/test_pathlib/test_pathlib.py
@@ -2954,7 +2954,13 @@ def test_glob_dotdot(self):
else:
# ".." segments are normalized first on Windows, so this path is
stat()able.
self.assertEqual(set(p.glob("xyzzy/..")), { P(self.base, "xyzzy",
"..") })
- self.assertEqual(set(p.glob("/".join([".."] * 50))), { P(self.base,
*[".."] * 50)})
+ if sys.platform == "emscripten":
+ # Emscripten will return ELOOP if there are 49 or more ..'s.
+ # Can remove when
https://github.com/emscripten-core/emscripten/pull/24591 is merged.
+ NDOTDOTS = 48
+ else:
+ NDOTDOTS = 50
+ self.assertEqual(set(p.glob("/".join([".."] * NDOTDOTS))), {
P(self.base, *[".."] * NDOTDOTS)})
def test_glob_inaccessible(self):
P = self.cls
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