Bug 89597 – [Qt] Failing reftests with 1px high line difference on 32 bit

• Status: RESOLVED
• Resolution: INVALID
• Component: Tools / Tests

[Robert Hogan]

These two fail on Qt only. The diff provided by Qt's ImageDiff is not very informative so I've attached one using Chromium's. There's a 1-pixel high line of difference at the bottom of the test block.

The tests run fine on other ports so there must something Qt-specific at work here. It's safe to skip for now as there is coverage in other ports but it would be nice to understand what the difference at work is here.

[Robert Hogan]

Created attachment 148635 [details]
Diff for abspos-001.html

[Csaba Osztrogonác]

These tests introduced in http://trac.webkit.org/changeset/120844 and
fail only on 32 bit Qt platforms (Qt 4.8, Qt 5.0 WK1 and WK2 too)

I cc-es Zoltán, our 32/64 bit debuger expert. Have you got any idea?

I'm going to skip them until fix to paint the bots green.

[Csaba Osztrogonác]

You were faster than me, thans. ( Skipped by http://trac.webkit.org/changeset/120856 )

[Csaba Osztrogonác]

- fast/block/float/previous-sibling-[abspos|float]-001.html

new failing tests because of this bug:
- fast/block/negative-margin-start-positive-margin-end.html
- fast/block/positive-margin-start-negative-margin-end-align-center.html

http://build.webkit.sed.hu/results/x86-32%20Linux%20Qt%20Release%20-%20Qt5-WebKit1/r120862%20%288930%29/results.html

[Csaba Osztrogonác]

New failing tests skipped by http://trac.webkit.org/changeset/120873

[Robert Hogan]

Committed r122666: <http://trac.webkit.org/changeset/122666>

[Robert Hogan]

Didn't mean for that to happen..

[Csaba Osztrogonác]

- one more failing test because of this bug: svg/as-image/svg-intrinsic-size-rectangular-vertical.html
- diff: http://build.webkit.sed.hu/results/x86-32%20Linux%20Qt%20Release%20-%20Qt5-WebKit1/r123337%20%2810077%29/svg/as-image/svg-intrinsic-size-rectangular-vertical-diffs.html
- skipped by https://trac.webkit.org/changeset/123338

[Jocelyn Turcotte]

=== Bulk closing of Qt bugs ===

If you believe that this bug report is still relevant for a non-Qt port of webkit.org, please re-open it and remove [Qt] from the summary.

If you believe that this is still an important QtWebKit bug, please fill a new report at https://bugreports.qt-project.org and add a link to this issue. See http://qt-project.org/wiki/ReportingBugsInQt for additional guidelines.