578002 - TM: Different values output with for, this

Status: RESOLVED DUPLICATE of bug 566637

(Core :: JavaScript Engine, defect)

Description

[Gary Kwong [:gkw] [:nth10sd] (NOT official MoCo now)]

for (var a = 0; a < 4; ++a) {
    b = a;
    print(this.b)
}

causes different values to be output with and without -j on TM changeset cf557e3fc53d

===

$ ./js-opt-32-tm-darwin 
js> for (var a = 0; a < 4; ++a) {
    b = a;
    print(this.b)
}
0
1
2
3
js> 

$ ./js-opt-32-tm-darwin -j
js> for (var a = 0; a < 4; ++a) {
    b = a;
    print(this.b)
}
0
1
2
2
js>

Comment 1

[Jesse Ruderman]

This seems very similar to bug 566637, yet has a different regressing changeset?  Did that bug go away and come back, or is there a difference between the testcases that causes them to show different regressing changesets?

Comment 2

[Gary Kwong [:gkw] [:nth10sd] (NOT official MoCo now)]

(In reply to comment #1)
> This seems very similar to bug 566637, yet has a different regressing
> changeset?  Did that bug go away and come back, or is there a difference
> between the testcases that causes them to show different regressing changesets?

Hmmm, yeah it looks similar to bug 566637 - I'd leave it to someone more knowledgeable to confirm the dupe.

Comment 3

[Gary Kwong [:gkw] [:nth10sd] (NOT official MoCo now)]

WFM on TM tip, assuming dupe to bug 566637..

Comment 4

[Christian Holler (:decoder)]

Bug in removed tracer code, setting in-testsuite- flag.