Closed Bug 628694 Opened 15 years ago Closed 2 years ago

JS_SetPropertyAttributes etc. can clobber non-configurable (JSPROP_PERMANENT) properties

Categories

(Core :: JavaScript Engine, defect)

Product:
Core
Component:
JavaScript Engine
Version:
Other Branch
Type:
defect

Tracking

()

Status:
RESOLVED INCOMPLETE

People

(Reporter: jorendorff, Unassigned)

Details

JS_Set*PropertyAttributes (and maybe JS_Define*?) can clobber existing non-configurable properties. Post-Ff4, we should ban this. It's another dumb corner case not covered by our regression tests. We can chop off the unwanted feature quicker than we could build test coverage for it. (Trivia: This bug probably means a sufficiently dumb embedding can break COMPILE_N_GO treatment of global permanent properties like NaN.)
Isn't this a dup of a bug Igor has? /be
Assignee: general → nobody
Severity: normal → S3
Status: NEW → RESOLVED
Closed: 2 years ago
Resolution: --- → INCOMPLETE
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