<?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>173138</bug_id>
          
          <creation_ts>2017-06-09 00:26:31 -0700</creation_ts>
          <short_desc>@font-face rules with invalid primary fonts never download their secondary fonts</short_desc>
          <delta_ts>2017-06-22 19:17:27 -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>New Bugs</component>
          <version>WebKit Nightly Build</version>
          <rep_platform>Unspecified</rep_platform>
          <op_sys>Unspecified</op_sys>
          <bug_status>RESOLVED</bug_status>
          <resolution>FIXED</resolution>
          
          
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords>InRadar</keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          
          <everconfirmed>1</everconfirmed>
          <reporter name="Myles C. Maxfield">mmaxfield</reporter>
          <assigned_to name="Myles C. Maxfield">mmaxfield</assigned_to>
          <cc>commit-queue</cc>
    
    <cc>dino</cc>
    
    <cc>jlewis3</cc>
    
    <cc>jonlee</cc>
    
    <cc>ryanhaddad</cc>
    
    <cc>simon.fraser</cc>
    
    <cc>thorton</cc>
    
    <cc>webkit-bug-importer</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1317254</commentid>
    <comment_count>0</comment_count>
    <who name="Myles C. Maxfield">mmaxfield</who>
    <bug_when>2017-06-09 00:26:31 -0700</bug_when>
    <thetext>@font-face rules with invalid primary fonts never download their secondary fonts</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1317257</commentid>
    <comment_count>1</comment_count>
      <attachid>312401</attachid>
    <who name="Myles C. Maxfield">mmaxfield</who>
    <bug_when>2017-06-09 00:28:05 -0700</bug_when>
    <thetext>Created attachment 312401
WIP</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1317258</commentid>
    <comment_count>2</comment_count>
    <who name="Myles C. Maxfield">mmaxfield</who>
    <bug_when>2017-06-09 00:28:29 -0700</bug_when>
    <thetext>&lt;rdar://problem/32554450&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1317592</commentid>
    <comment_count>3</comment_count>
      <attachid>312477</attachid>
    <who name="Myles C. Maxfield">mmaxfield</who>
    <bug_when>2017-06-09 13:15:46 -0700</bug_when>
    <thetext>Created attachment 312477
Broken test</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1317594</commentid>
    <comment_count>4</comment_count>
      <attachid>312478</attachid>
    <who name="Myles C. Maxfield">mmaxfield</who>
    <bug_when>2017-06-09 13:21:15 -0700</bug_when>
    <thetext>Created attachment 312478
Broken test</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1317596</commentid>
    <comment_count>5</comment_count>
      <attachid>312480</attachid>
    <who name="Myles C. Maxfield">mmaxfield</who>
    <bug_when>2017-06-09 13:22:24 -0700</bug_when>
    <thetext>Created attachment 312480
Broken test</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1317601</commentid>
    <comment_count>6</comment_count>
      <attachid>312482</attachid>
    <who name="Myles C. Maxfield">mmaxfield</who>
    <bug_when>2017-06-09 13:26:44 -0700</bug_when>
    <thetext>Created attachment 312482
Broken test</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1317957</commentid>
    <comment_count>7</comment_count>
      <attachid>312589</attachid>
    <who name="Myles C. Maxfield">mmaxfield</who>
    <bug_when>2017-06-10 21:31:25 -0700</bug_when>
    <thetext>Created attachment 312589
Patch</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1318028</commentid>
    <comment_count>8</comment_count>
      <attachid>312611</attachid>
    <who name="Myles C. Maxfield">mmaxfield</who>
    <bug_when>2017-06-11 11:34:44 -0700</bug_when>
    <thetext>Created attachment 312611
Patch</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1318424</commentid>
    <comment_count>9</comment_count>
      <attachid>312611</attachid>
    <who name="Simon Fraser (smfr)">simon.fraser</who>
    <bug_when>2017-06-12 15:47:26 -0700</bug_when>
    <thetext>Comment on attachment 312611
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=312611&amp;action=review

&gt; Source/WebCore/css/CSSFontFaceSource.cpp:199
&gt; +        ASSERT(status() == Status::Success);

Is this assertion useful?

&gt; Source/WebCore/css/CSSFontFaceSource.cpp:201
&gt; +        ASSERT(result);

Is this assertion useful?</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1318460</commentid>
    <comment_count>10</comment_count>
      <attachid>312611</attachid>
    <who name="Myles C. Maxfield">mmaxfield</who>
    <bug_when>2017-06-12 16:37:25 -0700</bug_when>
    <thetext>Comment on attachment 312611
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=312611&amp;action=review

&gt;&gt; Source/WebCore/css/CSSFontFaceSource.cpp:199
&gt;&gt; +        ASSERT(status() == Status::Success);
&gt; 
&gt; Is this assertion useful?

Yes, this makes sure that the only way we could have gotten here is if we already checked that we won&apos;t return null. This check occurs when we transition into the Success state.

&gt;&gt; Source/WebCore/css/CSSFontFaceSource.cpp:201
&gt;&gt; +        ASSERT(result);
&gt; 
&gt; Is this assertion useful?

Yes, this function returning null is the cause of the bug.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1318490</commentid>
    <comment_count>11</comment_count>
      <attachid>312611</attachid>
    <who name="WebKit Commit Bot">commit-queue</who>
    <bug_when>2017-06-12 17:05:59 -0700</bug_when>
    <thetext>Comment on attachment 312611
Patch

Clearing flags on attachment: 312611

Committed r218157: &lt;http://trac.webkit.org/changeset/218157&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1318491</commentid>
    <comment_count>12</comment_count>
    <who name="WebKit Commit Bot">commit-queue</who>
    <bug_when>2017-06-12 17:06:01 -0700</bug_when>
    <thetext>All reviewed patches have been landed.  Closing bug.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1318906</commentid>
    <comment_count>13</comment_count>
    <who name="Matt Lewis">jlewis3</who>
    <bug_when>2017-06-13 17:10:08 -0700</bug_when>
    <thetext>It looks like this patch https://trac.webkit.org/changeset/218157/webkit
may have caused several API Timeouts on iOS Simulator builds dealing with
WebKit2.LineBreaking

https://build.webkit.org/builders/Apple%20iOS%2010%20Simulator%20Release%20WK2%20%28Tests%29/builds/2203
https://build.webkit.org/builders/Apple%20iOS%2010%20Simulator%20Release%20WK2%20%28Tests%29/builds/2203/steps/run-api-tests/logs/stdio</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1319162</commentid>
    <comment_count>14</comment_count>
    <who name="Ryan Haddad">ryanhaddad</who>
    <bug_when>2017-06-14 09:40:22 -0700</bug_when>
    <thetext>(In reply to Matt Lewis from comment #13)
&gt; It looks like this patch https://trac.webkit.org/changeset/218157/webkit
&gt; may have caused several API Timeouts on iOS Simulator builds dealing with
&gt; WebKit2.LineBreaking
&gt; 
&gt; https://build.webkit.org/builders/
&gt; Apple%20iOS%2010%20Simulator%20Release%20WK2%20%28Tests%29/builds/2203
&gt; https://build.webkit.org/builders/
&gt; Apple%20iOS%2010%20Simulator%20Release%20WK2%20%28Tests%29/builds/2203/steps/
&gt; run-api-tests/logs/stdio

It looks like the API tests are hitting assertion failures on iOS simulator:
https://build.webkit.org/builders/Apple%20iOS%2010%20Simulator%20Debug%20WK2%20%28Tests%29/builds/2059/steps/run-api-tests/logs/stdio

ASSERTION FAILED: !m_deletionHasBegun
/Volumes/Data/slave/ios-simulator-10-debug/build/WebKitBuild/Debug-iphonesimulator/usr/local/include/wtf/RefCounted.h(43) : void WTF::RefCountedBase::ref() const
1   0x1103de64d WTFCrash
2   0x1103de669 WTFCrashWithSecurityImplication
3   0x1150ca872 WTF::RefCountedBase::ref() const
4   0x1155ca91a WTF::Ref&lt;WebCore::CSSFontFace&gt;::Ref(WebCore::CSSFontFace&amp;)
5   0x1155c2d1d WTF::Ref&lt;WebCore::CSSFontFace&gt;::Ref(WebCore::CSSFontFace&amp;)
6   0x1155c2c34 WebCore::CSSFontFace::fontLoadEventOccurred()
7   0x1155c41a0 WebCore::CSSFontFace::fontLoaded(WebCore::CSSFontFaceSource&amp;)
8   0x1155eda07 WebCore::CSSFontFaceSource::fontLoaded(WebCore::CachedFont&amp;)
9   0x11531738e WebCore::CachedFont::checkNotify()
10  0x1153167d6 WebCore::CachedFont::finishLoading(WebCore::SharedBuffer*)
11  0x11783a89a WebCore::SubresourceLoader::didFinishLoading(WebCore::NetworkLoadMetrics const&amp;)
12  0x10799987d WebKit::WebResourceLoader::didFinishResourceLoad(WebCore::NetworkLoadMetrics const&amp;)
13  0x10799e1f6 void IPC::callMemberFunctionImpl&lt;WebKit::WebResourceLoader, void (WebKit::WebResourceLoader::*)(WebCore::NetworkLoadMetrics const&amp;), std::__1::tuple&lt;WebCore::NetworkLoadMetrics&gt;, 0ul&gt;(WebKit::WebResourceLoader*, void (WebKit::WebResourceLoader::*)(WebCore::NetworkLoadMetrics const&amp;), std::__1::tuple&lt;WebCore::NetworkLoadMetrics&gt;&amp;&amp;, std::__1::integer_sequence&lt;unsigned long, 0ul&gt;)
14  0x10799e068 void IPC::callMemberFunction&lt;WebKit::WebResourceLoader, void (WebKit::WebResourceLoader::*)(WebCore::NetworkLoadMetrics const&amp;), std::__1::tuple&lt;WebCore::NetworkLoadMetrics&gt;, std::__1::integer_sequence&lt;unsigned long, 0ul&gt; &gt;(std::__1::tuple&lt;WebCore::NetworkLoadMetrics&gt;&amp;&amp;, WebKit::WebResourceLoader*, void (WebKit::WebResourceLoader::*)(WebCore::NetworkLoadMetrics const&amp;))
15  0x10799d342 void IPC::handleMessage&lt;Messages::WebResourceLoader::DidFinishResourceLoad, WebKit::WebResourceLoader, void (WebKit::WebResourceLoader::*)(WebCore::NetworkLoadMetrics const&amp;)&gt;(IPC::Decoder&amp;, WebKit::WebResourceLoader*, void (WebKit::WebResourceLoader::*)(WebCore::NetworkLoadMetrics const&amp;))
16  0x10799ca6c WebKit::WebResourceLoader::didReceiveWebResourceLoaderMessage(IPC::Connection&amp;, IPC::Decoder&amp;)
17  0x1072933f9 WebKit::NetworkProcessConnection::didReceiveMessage(IPC::Connection&amp;, IPC::Decoder&amp;)
18  0x1070478e3 IPC::Connection::dispatchMessage(IPC::Decoder&amp;)
19  0x10703d568 IPC::Connection::dispatchMessage(std::__1::unique_ptr&lt;IPC::Decoder, std::__1::default_delete&lt;IPC::Decoder&gt; &gt;)
20  0x107047ee0 IPC::Connection::dispatchOneMessage()
21  0x1070600dd IPC::Connection::enqueueIncomingMessage(std::__1::unique_ptr&lt;IPC::Decoder, std::__1::default_delete&lt;IPC::Decoder&gt; &gt;)::$_14::operator()()
22  0x107060039 WTF::Function&lt;void ()&gt;::CallableWrapper&lt;IPC::Connection::enqueueIncomingMessage(std::__1::unique_ptr&lt;IPC::Decoder, std::__1::default_delete&lt;IPC::Decoder&gt; &gt;)::$_14&gt;::call()
23  0x11040d5ee WTF::Function&lt;void ()&gt;::operator()() const
24  0x11042d13d WTF::RunLoop::performWork()
25  0x11042d824 WTF::RunLoop::performWork(void*)
26  0x10a7aec01 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__
27  0x10a7940cf __CFRunLoopDoSources0
28  0x10a7935ff __CFRunLoopRun
29  0x10a793016 CFRunLoopRunSpecific
30  0x106a6e480 -[NSRunLoop(NSRunLoop) runMode:beforeDate:]
31  0x106a6e35b -[NSRunLoop(NSRunLoop) run]</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1319163</commentid>
    <comment_count>15</comment_count>
    <who name="Matt Lewis">jlewis3</who>
    <bug_when>2017-06-14 09:40:31 -0700</bug_when>
    <thetext>Reverted r218157 for reason:

This patch caused multiple API failures on iOS Simulator.

Committed r218264: &lt;http://trac.webkit.org/changeset/218264&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1321562</commentid>
    <comment_count>16</comment_count>
    <who name="Myles C. Maxfield">mmaxfield</who>
    <bug_when>2017-06-21 11:21:40 -0700</bug_when>
    <thetext>I can&apos;t reproduce the failures on a locally-running iOS 11 simulator. I&apos;ll try iOS 10.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1321656</commentid>
    <comment_count>17</comment_count>
    <who name="Myles C. Maxfield">mmaxfield</who>
    <bug_when>2017-06-21 15:51:53 -0700</bug_when>
    <thetext>I can&apos;t reproduce this on an iOS 10 simulator either.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1321671</commentid>
    <comment_count>18</comment_count>
    <who name="Myles C. Maxfield">mmaxfield</who>
    <bug_when>2017-06-21 16:22:08 -0700</bug_when>
    <thetext>The assertion is saying that the CSSFontFace&apos;s superclass has had its destructor called, but the CSSFontFace owns a unique_ptr to the CSSFontFaceSource whose destructor unregisters it from the CachedResource.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1321757</commentid>
    <comment_count>19</comment_count>
    <who name="Myles C. Maxfield">mmaxfield</who>
    <bug_when>2017-06-21 21:54:56 -0700</bug_when>
    <thetext>I tried to reproduce this for 3 hours, trying everything I can think of (including running the exact same sequence of commands that the bots are running), and I still can&apos;t reproduce this.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1322144</commentid>
    <comment_count>20</comment_count>
    <who name="Myles C. Maxfield">mmaxfield</who>
    <bug_when>2017-06-22 17:36:00 -0700</bug_when>
    <thetext>CSSFontFaceSource::fontLoaded() is synchronously causing the CSSFontFace to be destroyed before it calls m_face.fontLoaded(*this);</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1322153</commentid>
    <comment_count>21</comment_count>
    <who name="Myles C. Maxfield">mmaxfield</who>
    <bug_when>2017-06-22 18:15:45 -0700</bug_when>
    <thetext>The CSSFontFace is being destroyed under SVGDocument::create()</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1322171</commentid>
    <comment_count>22</comment_count>
    <who name="Myles C. Maxfield">mmaxfield</who>
    <bug_when>2017-06-22 19:17:27 -0700</bug_when>
    <thetext>Committed r218733: &lt;http://trac.webkit.org/changeset/218733&gt;</thetext>
  </long_desc>
      
          <attachment
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              isprivate="0"
          >
            <attachid>312401</attachid>
            <date>2017-06-09 00:28:05 -0700</date>
            <delta_ts>2017-06-09 13:15:45 -0700</delta_ts>
            <desc>WIP</desc>
            <filename>bug-173138-20170609002804.patch</filename>
            <type>text/plain</type>
            <size>5187</size>
            <attacher name="Myles C. Maxfield">mmaxfield</attacher>
            
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          </attachment>
          <attachment
              isobsolete="1"
              ispatch="1"
              isprivate="0"
          >
            <attachid>312477</attachid>
            <date>2017-06-09 13:15:46 -0700</date>
            <delta_ts>2017-06-09 13:21:14 -0700</delta_ts>
            <desc>Broken test</desc>
            <filename>bug-173138-20170609131624.patch</filename>
            <type>text/plain</type>
            <size>6127</size>
            <attacher name="Myles C. Maxfield">mmaxfield</attacher>
            
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            <desc>Broken test</desc>
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          </attachment>
          <attachment
              isobsolete="1"
              ispatch="1"
              isprivate="0"
          >
            <attachid>312482</attachid>
            <date>2017-06-09 13:26:44 -0700</date>
            <delta_ts>2017-06-10 21:31:24 -0700</delta_ts>
            <desc>Broken test</desc>
            <filename>bug-173138-20170609132722.patch</filename>
            <type>text/plain</type>
            <size>7005</size>
            <attacher name="Myles C. Maxfield">mmaxfield</attacher>
            
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          </attachment>
          <attachment
              isobsolete="1"
              ispatch="1"
              isprivate="0"
          >
            <attachid>312589</attachid>
            <date>2017-06-10 21:31:25 -0700</date>
            <delta_ts>2017-06-11 11:34:42 -0700</delta_ts>
            <desc>Patch</desc>
            <filename>bug-173138-20170610213125.patch</filename>
            <type>text/plain</type>
            <size>7793</size>
            <attacher name="Myles C. Maxfield">mmaxfield</attacher>
            
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          </attachment>
          <attachment
              isobsolete="0"
              ispatch="1"
              isprivate="0"
          >
            <attachid>312611</attachid>
            <date>2017-06-11 11:34:44 -0700</date>
            <delta_ts>2017-06-12 17:05:59 -0700</delta_ts>
            <desc>Patch</desc>
            <filename>bug-173138-20170611113443.patch</filename>
            <type>text/plain</type>
            <size>9624</size>
            <attacher name="Myles C. Maxfield">mmaxfield</attacher>
            
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          </attachment>
      

    </bug>

</bugzilla>