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fs: do not swallow exceptions thrown by completion callbacks - #66308
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marcopiraccini
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September 26, 2026 03:53
Codecov Report❌ Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## main #66308 +/- ##
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+ Coverage 90.59% 90.67% +0.07%
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Files 797 797
Lines 278230 278235 +5
Branches 53482 53499 +17
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+ Hits 252066 252284 +218
+ Misses 16558 16334 -224
- Partials 9606 9617 +11
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ShogunPanda
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Since 93644d5 the TryCatch guarding StringBytes::Encode in the completion callbacks of mkdtemp, realpath.native, readlink, recursive mkdir, recursive readdir and dir.read is still active when the JS callback runs. Exceptions thrown by the callback, or by the nextTick queue drained after it, are caught by it and never reported. Leave the TryCatch before calling into JS. Fixes: nodejs#65667 Refs: nodejs#57706 Signed-off-by: marcopiraccini <marco.piraccini@gmail.com>
Signed-off-by: marcopiraccini <marco.piraccini@gmail.com>
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Since #57706 the completion callbacks of
fs.mkdtemp,fs.realpath.native,fs.readlink,fs.mkdir({ recursive }),fs.readdir({ recursive })anddir.read()call into JS while theTryCatchmeant forStringBytes::Encodeis still in scope.Any exception thrown by the user callback, or by the
nextTickqueue drained right after it (e.g. afterawait fsp.mkdtemp()), is swallowed: the process prints nothing and exits 0, anduncaughtExceptionnever fires. v22 is not affected.This moves the
TryCatchinto a small helper that produces the value first and callsResolve()/Reject()only after leaving it.Fixes: #65667