fs: fix realpath of namespaced drive paths - #65378
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August 18, 2026 12:25
Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #65378 +/- ##
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Coverage 90.11% 90.12%
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Files 752 752
Lines 251861 252212 +351
Branches 47365 47446 +81
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+ Hits 226955 227296 +341
+ Misses 16238 16213 -25
- Partials 8668 8703 +35
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The JavaScript realpath implementation probes a namespaced drive root through the fs binding. Windows path resolution drops the trailing separator from that probe, so lstat receives C: and reports EISDIR. Use the regular drive-root spelling only for the probe. Preserve the namespaced spelling for traversal and returned paths. Signed-off-by: Jason Zhang <xzha4350@gmail.com>
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The JavaScript realpath implementation probes a namespaced drive root through the fs binding. Windows path resolution drops the trailing separator from that probe, so lstat receives C: and reports EISDIR.
Use the regular drive-root spelling only for the probe. Preserve the namespaced spelling for traversal and returned paths.
Fixes: #62446
AI Disclaimer: I used AI to help me evaluate approaches. My initial attempt at #62639 was too breaking.