386452 - svg text text-anchor with value middle or end give unpredictable result.

Status: RESOLVED DUPLICATE of bug 293852

(Core :: SVG, defect)

Description

[syfre92]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.0; en-GB; rv:1.8.1.4) Gecko/20070515 Firefox/2.0.0.4
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-GB; rv:1.8.1.4) Gecko/20070515 Firefox/2.0.0.4

Example (works with adobe):

<?xml version="1.0" encoding="UTF-8"?>
<svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="600" height="600" viewBox="0 0 600 600">

<svg:g transform="translate(240,240) scale(240,240)">
<svg:line x1="0" y1="-0.1" x2="0" y2="0.1" stroke="red" stroke-width="0.002"/>
<svg:line x1="-0.1" y1="0" x2="0.1" y2="0" stroke="red" stroke-width="0.002"/>

<svg:text x="0" y="0.5" font-size="0.1" text-anchor="start" style="fill:black;">start</svg:text>
<svg:text x="0" y="0" font-size="0.1" text-anchor="middle" style="fill:black;">middle</svg:text>
<svg:text x="0" y="-0.5" font-size="0.1" text-anchor="end" style="fill:black;">end</svg:text>

<!--
<svg:text x="0" y="0.5" font-size="0.5" text-anchor="start" style="fill:black;">start</svg:text>
<svg:text x="0" y="0" font-size="0.5" text-anchor="middle" style="fill:black;">middle</svg:text>
<svg:text x="0" y="-0.5" font-size="0.5" text-anchor="end" style="fill:black;">end</svg:text>
-->
</svg:g>
</svg:svg>

Reproducible: Always

Steps to Reproduce:
1.
2.
3.
Actual Results:  
with font-size=0.1 only start is visible
with font-size=0.5 a part of "middle" is showed at wrong place

Expected Results:  
end middle and start visibles with middle centered on the red cross

Comment 1

[Ria Klaassen (not reading all bugmail)]

Attachment: reporter's test case

Comment 2

[Ria Klaassen (not reading all bugmail)]

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a6pre) Gecko/20070630 Minefield/3.0a6pre

This test case crashes like crazy on trunk, and for the first time I saw breakpad:
https://crash-reports.mozilla.com/reports/report/index/80a50b66-278e-11dc-87da-001a4bd43e5c?date=2007-07-01-04
https://crash-reports.mozilla.com/reports/report/index/be7c8a57-278e-11dc-b5cb-001a4bd43ed6?date=2007-07-01-04

Firefox 3.0a6pre Crash Report
UUID	80a50b66-278e-11dc-87da-001a4bd43e5c
Time	2007-06-30 21:49:51.150000-07:00
Build ID	2007063005
OS	Windows NT
OS Version	5.1.2600 Service Pack 2
CPU	x86
CPU Info	AuthenticAMD family 6 model 8 stepping 0
Crash Reason	EXCEPTION_ACCESS_VIOLATION
Crash Address	0x4
Stack of Crashing Thread
frame 	signature
0 	_moz_cairo_set_scaled_font
1 	gfxWindowsFont::SetupCairoFont(_cairo *)
2 	gfxFont::Draw(gfxTextRun *,unsigned int,unsigned int,gfxContext *,int,gfxPoint *,gfxFont::Spacing *)
3 	gfxTextRun::DrawGlyphs(gfxFont *,gfxContext *,int,gfxPoint *,unsigned int,unsigned int,gfxTextRun::PropertyProvider *)
4 	gfxTextRun::Draw(gfxContext *,gfxPoint,unsigned int,unsigned int,gfxRect const *,gfxTextRun::PropertyProvider *,double *)
5 	nsSVGGlyphFrame::LoopCharacters(gfxContext *,nsString const &,nsSVGGlyphFrame::nsSVGCharacterPosition const *,nsSVGGlyphFrame::FillOrStroke)
6 	nsSVGGlyphFrame::PaintSVG(nsSVGRenderState *,nsRect *)
7 	nsSVGUtils::PaintChildWithEffects(nsSVGRenderState *,nsRect *,nsIFrame *)
8 	nsSVGDisplayContainerFrame::PaintSVG(nsSVGRenderState *,nsRect *)
9 	nsSVGUtils::PaintChildWithEffects(nsSVGRenderState *,nsRect *,nsIFrame *)

Comment 3

[Ria Klaassen (not reading all bugmail)]

Ah well, I think the crash is bug 378716.

Comment 4

[Robert Longson [:longsonr]]

(In reply to comment #3)
> Ah well, I think the crash is bug 378716.
> 

That's right, the trunk crash is bug 378716, middle not working is bug 293852.

Not sure which to mark this a duplicate of currently.