138599 - mozilla hangs opening the provided attachment

Status: RESOLVED DUPLICATE of bug 13350

(Core :: DOM: Core & HTML, defect)

Description

[André Langhorst]

RC1, wXP

#1 file having a JS while(true) loop - does not hang
#2 one "}" added - hangs totally

this is just about a single bracket, maybe this could be solved...

Comment 1

[André Langhorst]

Attachment: this one does not hang

Comment 2

[André Langhorst]

Attachment: this one hangs

Comment 3

[Vadim Berezniker]

happens on linux trunk 2002041817
mozilla freezes badly

os -> all

Comment 4

[Phil Schwartau]

The missing bracket in Comment #1 is a syntax error that actually
prevents the script from compiling; that's why we don't hang.

Just bring up Mozilla, Tools > Web Development > JavaScript Console,
and clear it of all previous errors. Now load the attachment given
in Comment #1. You will see this error in the JS Console:

  Error: missing } after function body
  Source File: http://bugzilla.mozilla.org/showattachment.cgi?attach_id=80055
  Line: 13, Column: 1


When you insert the second bracket, the syntax is now correct, 
we have an infinite loop, and the browser hangs. 

It is a valid point, however, to ask that the browser guard against
infinite loops. That makes this bug a duplicate of bug 13350,
"DOM needs to police JS infinite loops, schedule garbage collection"

Reassigning to DOM Level 0 for parity with the duplicate bug.
André, thank you for this report and your testcases. You will be
cc'ed on bug 13350 so that you can follow its progress -

Comment 5

[Phil Schwartau]

*** This bug has been marked as a duplicate of 13350 ***