TI: [infer failure] Missing type at #3:00035 pushed 0: string

RESOLVED FIXED

Status

()

Core
JavaScript Engine
--
critical
RESOLVED FIXED
6 years ago
5 years ago

People

(Reporter: decoder, Unassigned)

Tracking

(Blocks: 2 bugs, {crash, testcase})

Trunk
x86
Linux
crash, testcase
Points:
---
Dependency tree / graph
Bug Flags:
in-testsuite +

Firefox Tracking Flags

(Not tracked)

Details

(Reporter)

Description

6 years ago
The following code crashes on TI revision 90a7b141e0cf (run with options -m -n -a), tested on 32 bit:

(function() {
    var o = {};
    with (o) o='recorder not started, ';
    ('arguments' in o, false,
                  "property deletion observable")
})()
This is a TM issue with NAME accesses that should get fixed as part of bug 651966 --- NAME opcodes within a script which can alias locals don't mark those locals as escaping.  This can happen in scripts using 'with', which confused the SSA analysis; the fix just disables tracking of SSA values for variables in scripts which use 'with'.  This could be improved once bug 651966 is finished.

http://hg.mozilla.org/projects/jaegermonkey/rev/8f0c5e12eba9
Status: NEW → RESOLVED
Last Resolved: 6 years ago
Resolution: --- → FIXED
(Reporter)

Updated

6 years ago
Blocks: 676763
(Reporter)

Comment 2

5 years ago
A testcase for this bug was automatically identified at js/src/jit-test/tests/basic/bug652422.js.
Flags: in-testsuite+
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