<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<!DOCTYPE bugzilla SYSTEM "https://bugs.webkit.org/page.cgi?id=bugzilla.dtd">

<bugzilla version="5.0.4.1"
          urlbase="https://bugs.webkit.org/"
          
          maintainer="admin@webkit.org"
>

    <bug>
          <bug_id>41420</bug_id>
          
          <creation_ts>2010-06-30 10:34:11 -0700</creation_ts>
          <short_desc>Canvas: arc() with startAngle == endAngle shouldn&apos;t add to the path</short_desc>
          <delta_ts>2010-07-12 05:17:55 -0700</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>1</classification_id>
          <classification>Unclassified</classification>
          <product>WebKit</product>
          <component>WebCore Misc.</component>
          <version>528+ (Nightly build)</version>
          <rep_platform>All</rep_platform>
          <op_sys>All</op_sys>
          <bug_status>RESOLVED</bug_status>
          <resolution>FIXED</resolution>
          
          
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords>HTML5</keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          
          <everconfirmed>1</everconfirmed>
          <reporter name="Andreas Kling">kling</reporter>
          <assigned_to name="Nobody">webkit-unassigned</assigned_to>
          <cc>commit-queue</cc>
    
    <cc>mdelaney7</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>244834</commentid>
    <comment_count>0</comment_count>
    <who name="Andreas Kling">kling</who>
    <bug_when>2010-06-30 10:34:11 -0700</bug_when>
    <thetext>Quoth HTML5:
&quot;Zero-length line segments must be pruned before stroking a path. Empty subpaths must be ignored.&quot;

This would fix one in-tree test:
* canvas/philip/tests/2d.path.stroke.prune.arc.html

Spec link:
http://www.whatwg.org/specs/web-apps/current-work/#dom-context-2d-stroke</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>244838</commentid>
    <comment_count>1</comment_count>
      <attachid>60131</attachid>
    <who name="Andreas Kling">kling</who>
    <bug_when>2010-06-30 10:38:34 -0700</bug_when>
    <thetext>Created attachment 60131
Proposed patch</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>244862</commentid>
    <comment_count>2</comment_count>
      <attachid>60131</attachid>
    <who name="WebKit Commit Bot">commit-queue</who>
    <bug_when>2010-06-30 11:34:43 -0700</bug_when>
    <thetext>Comment on attachment 60131
Proposed patch

Rejecting patch 60131 from commit-queue.

Failed to run &quot;[&apos;WebKitTools/Scripts/run-webkit-tests&apos;, &apos;--no-launch-safari&apos;, &apos;--exit-after-n-failures=1&apos;, &apos;--ignore-tests&apos;, &apos;compositing&apos;, &apos;--quiet&apos;]&quot; exit_code: 1
Last 500 characters of output:
iling Java tests
make: Nothing to be done for `default&apos;.
Running tests from /Users/eseidel/Projects/CommitQueue/LayoutTests
Skipped list contained &apos;compositing/iframes/composited-iframe.html&apos;, but no file of that name could be found
Testing 19237 test cases.
canvas/philip/tests/2d.path.stroke.prune.arc.html -&gt; failed

Exiting early after 1 failures. 551 tests run.
31.37s total testing time

550 test cases (99%) succeeded
1 test case (&lt;1%) had incorrect layout
1 test case (&lt;1%) had stderr output

Full output: http://webkit-commit-queue.appspot.com/results/3354269</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>244870</commentid>
    <comment_count>3</comment_count>
      <attachid>60139</attachid>
    <who name="Andreas Kling">kling</who>
    <bug_when>2010-06-30 11:50:52 -0700</bug_when>
    <thetext>Created attachment 60139
Proposed patch v2

Only unskip test on Qt, test also uses arcTo() which isn&apos;t up-to-spec on Mac I guess.
Unfortunately I can&apos;t verify that since I don&apos;t have a Mac dev env handy.

The missing logic as implemented in Qt&apos;s Path::addArcTo():

FloatPoint p0(m_path.currentPosition());
if ((p1.x() == p0.x() &amp;&amp; p1.y() == p0.y()) || (p1.x() == p2.x() &amp;&amp; p1.y() == p2.y()) || radius == 0.f) {
    m_path.lineTo(p1);
    return;
}</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>245240</commentid>
    <comment_count>4</comment_count>
      <attachid>60131</attachid>
    <who name="Eric Seidel (no email)">eric</who>
    <bug_when>2010-07-01 03:17:10 -0700</bug_when>
    <thetext>Comment on attachment 60131
Proposed patch

Cleared Darin Adler&apos;s review+ from obsolete attachment 60131 so that this bug does not appear in http://webkit.org/pending-commit.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>249763</commentid>
    <comment_count>5</comment_count>
      <attachid>60139</attachid>
    <who name="WebKit Commit Bot">commit-queue</who>
    <bug_when>2010-07-12 05:17:50 -0700</bug_when>
    <thetext>Comment on attachment 60139
Proposed patch v2

Clearing flags on attachment: 60139

Committed r63073: &lt;http://trac.webkit.org/changeset/63073&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>249764</commentid>
    <comment_count>6</comment_count>
    <who name="WebKit Commit Bot">commit-queue</who>
    <bug_when>2010-07-12 05:17:55 -0700</bug_when>
    <thetext>All reviewed patches have been landed.  Closing bug.</thetext>
  </long_desc>
      
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            <date>2010-06-30 10:38:34 -0700</date>
            <delta_ts>2010-07-01 03:17:10 -0700</delta_ts>
            <desc>Proposed patch</desc>
            <filename>bug-41420.diff</filename>
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            <attachid>60139</attachid>
            <date>2010-06-30 11:50:52 -0700</date>
            <delta_ts>2010-07-12 05:17:50 -0700</delta_ts>
            <desc>Proposed patch v2</desc>
            <filename>bug-41420-v2.diff</filename>
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</data>

          </attachment>
      

    </bug>

</bugzilla>