Open
Bug 1458987
Opened 6 years ago
Updated 2 years ago
Consider being more strict with array parameters in XPConnect
Categories
(Core :: XPConnect, enhancement, P3)
Core
XPConnect
Tracking
()
NEW
People
(Reporter: nika, Unassigned)
Details
Currently XPConnect is not strict with array parameters. If a non-array value is passed as an array to a function with an optional length parameter, it is interpreted in native code as an array of 0 length. This is due to checks like https://searchfox.org/mozilla-central/rev/ce9ff94ffed34dc17ec0bfa406156d489eaa8ee1/js/xpconnect/src/XPCWrappedJSClass.cpp#1350 which short-circuit conversion when the length is 0. We depend on this in tests like https://searchfox.org/mozilla-central/rev/ce9ff94ffed34dc17ec0bfa406156d489eaa8ee1/intl/locale/tests/unit/test_localeService_negotiateLanguages.js#92. We can (and probably should) change this behaviour, but we will need to fix these tests.
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Updated•6 years ago
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Priority: -- → P3
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Updated•2 years ago
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Severity: normal → S3
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Description
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