122554 - <mtable> <mtr> <mtd> <mtext/> </mtd> </mtr> </mtable> hangs mozilla

Status: RESOLVED DUPLICATE of bug 236326

(Core :: MathML, defect)

Description

[Michel Goossens]

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.7) Gecko/20011230
BuildID:    2001123017

When I try and view my document (via the above URL or as a local file)
Mozilla (with SVG+MatmML support, as downloaded from the Mozilla download
directory) display nothing, but Mozilla seems to go into a loop, consuming all
CPU cycles available on the machine. This happens with version 0.9.7 both on
Linux (build 2001123017), Windows 2000 
(build 2002010204, i.e., version 0.9.7, and build 2002012709, a nightly build of
pre-0.9.8, binaries I picked up on Monday Jan 28th and today Jan 30th have the
same behavior). Amaya has no problem with that file and displays it correctly

Reproducible: Always
Steps to Reproduce:
1. Enter above URL into browser
2.
3.

Actual Results:  Mozilla shows nothing and goes into aloop

Expected Results:  Show the contents

Comment 1

[rbs]

Attachment: screenshot - rendering of the page

Works for me on Windows with a more recent build.
Hixie, do you reproduce the problem when visiting the page?

Comment 2

[[e-mail]]

Confirmed on Linux 0.9.9 branch using 2002030508. Other MathML pages work on
this system with this build. No similar bugs in MathML were found in Bugzilla.

mozilla process goes to 100% CPU and never comes back, therefore I hope I'm not
treading on anyone's feet by adding crash, and setting Severity = critical.

I don't have the "extra" MathML fonts, but this page crashes before it can warn
me about that anyway. I tested only on Linux, Red Hat 7.2 + updates.

Comment 3

[[e-mail]]

This time really marking crash/ critical

Comment 4

[rbs]

is this still a problem with the official m0.9.9 release build?

hixie, did you see my question in comment #1, two months ago?

Comment 5

[Hixie (not reading bugmail)]

Oops, nope, sorry. I'll take a look in a sec (can't check crashers and hang bugs
until I have finished reading all open tabs).

Comment 6

[[e-mail]]

Seconds are very long where Hixie is. Reproduced in 0.9.9 Linux build.

Ugh. Is there really no-one working on this component with Unix? Why is a bug
assigned to someone who is powerless to fix it?

Comment 7

[Hixie (not reading bugmail)]

Attachment: Testcase: Simplified

This triggers the bug on Mandrake 8.1 (Linux). Note that the presence of XHTML
is required to trigger the bug.

Comment 8

[rbs]

*** Bug 134404 has been marked as a duplicate of this bug. ***

Comment 9

[Andrew L Zimdars]

Attachment: XHTML+MathML that causes Mozilla to hang

Comment 10

[Andrew L Zimdars]

Attachment: LaTeX source for preceding example

I've also attached the TeX source that I used to generate the example, in case
the problem is with mzlatex's output.  (If so, a little more feedback from the
browser would be appreciated ...)

Comment 11

[Hixie (not reading bugmail)]

If Mozilla hangs or crashes, it's a Mozilla bug, regardless of what the input
may look like.

Comment 12

[rbs]

I am unconventionally marking as a suplicate of the more recent bug 236326
because it has a patch.

*** This bug has been marked as a duplicate of 236326 ***