Closed Bug 839751 Opened 10 years ago Closed 10 years ago

"Assertion failure: i < argc_" with localeCompare

Categories

(Core :: JavaScript Engine, defect)

Product:
Core
Component:
JavaScript Engine
Type:
defect
Priority:
Not set
Severity:
critical

Tracking

()

Status:
RESOLVED FIXED
Milestone:
mozilla21

People

(Reporter: jruderman, Assigned: mozillabugs)

References

Details

(Keywords: assertion, regression, testcase)

Attachments

(3 files)

browser testcase
46 bytes, text/html
Details
stack trace
6.41 KB, text/plain
Details
patch
863 bytes, patch
Waldo
: review+
Details | Diff | Splinter Review
Attached file browser testcase — 
Assertion failure: i < argc_, at jsapi.h:741
Attached file stack trace — 

    
    

    
  
Something's whacked, because the operator[] there is clearly guarded by args.length() > 0.  I can't reproduce this in a shell, and I see no reason why shell would behave differently from browser for this.

    
    

    
  
I overlooked the assignment
   args[0].setString(thatStr);
which is only reached if an embedder (such as the browser) installs a callback. I don't see a reason for this assignment to exist - maybe it was a pre-RootedString attempt at rooting thatStr?

A different puzzle - how are we even getting here? The String constructor isn't supposed to have a localeCompare property - is that yet another wacko extension?

    
    

    
  

      
      
      
      

        Attached patch
          
          
        patch
        — 
          — Splinter Review
      

    


  
Removed the statement that caused the assertion to fail.
Assignee: general → mozillabugs
Status: NEW → ASSIGNED

        Attachment #712161 -
        Flags: review?(jwalden+bmo)

    
    

    
  
Comment on attachment 712161 [details] [diff] [review]
patch

Review of attachment 712161 [details] [diff] [review]:
-----------------------------------------------------------------

Sigh.  |args[n]| shouldn't be mutable.  :-(

        Attachment #712161 -
        Flags: review?(jwalden+bmo) → review+

    
  

        Attachment #712161 -
        Flags: checkin?(jwalden+bmo)

    
  
OS: Mac OS X → All
Hardware: x86_64 → All
Target Milestone: --- → mozilla21

    
    

    
  
https://hg.mozilla.org/mozilla-central/rev/7b379cdbf900
Status: ASSIGNED → RESOLVED
Closed: 10 years ago
Resolution: --- → FIXED

          You need to log in
          before you can comment on or make changes to this bug.