<?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>152934</bug_id>
          
          <creation_ts>2016-01-08 16:16:09 -0800</creation_ts>
          <short_desc>FTL B3 should do varargs tail calls and stack overflows</short_desc>
          <delta_ts>2016-01-08 16:38:39 -0800</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>1</classification_id>
          <classification>Unclassified</classification>
          <product>WebKit</product>
          <component>JavaScriptCore</component>
          <version>WebKit 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></keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          <blocked>150279</blocked>
          <everconfirmed>1</everconfirmed>
          <reporter name="Filip Pizlo">fpizlo</reporter>
          <assigned_to name="Filip Pizlo">fpizlo</assigned_to>
          <cc>commit-queue</cc>
    
    <cc>keith_miller</cc>
    
    <cc>mark.lam</cc>
    
    <cc>msaboff</cc>
    
    <cc>saam</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1154050</commentid>
    <comment_count>0</comment_count>
    <who name="Filip Pizlo">fpizlo</who>
    <bug_when>2016-01-08 16:16:09 -0800</bug_when>
    <thetext>Patch forthcoming.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1154051</commentid>
    <comment_count>1</comment_count>
      <attachid>268597</attachid>
    <who name="Filip Pizlo">fpizlo</who>
    <bug_when>2016-01-08 16:18:42 -0800</bug_when>
    <thetext>Created attachment 268597
the patch</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1154052</commentid>
    <comment_count>2</comment_count>
    <who name="WebKit Commit Bot">commit-queue</who>
    <bug_when>2016-01-08 16:20:59 -0800</bug_when>
    <thetext>Attachment 268597 did not pass style-queue:


ERROR: Source/JavaScriptCore/ftl/FTLLowerDFGToLLVM.cpp:344:  Place brace on its own line for function definitions.  [whitespace/braces] [4]
ERROR: Source/JavaScriptCore/ftl/FTLLowerDFGToLLVM.cpp:352:  Place brace on its own line for function definitions.  [whitespace/braces] [4]
Total errors found: 2 in 2 files


If any of these errors are false positives, please file a bug against check-webkit-style.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1154053</commentid>
    <comment_count>3</comment_count>
      <attachid>268597</attachid>
    <who name="Filip Pizlo">fpizlo</who>
    <bug_when>2016-01-08 16:21:44 -0800</bug_when>
    <thetext>Comment on attachment 268597
the patch

Hold on, this isn&apos;t working right.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1154054</commentid>
    <comment_count>4</comment_count>
      <attachid>268597</attachid>
    <who name="Filip Pizlo">fpizlo</who>
    <bug_when>2016-01-08 16:24:01 -0800</bug_when>
    <thetext>Comment on attachment 268597
the patch

View in context: https://bugs.webkit.org/attachment.cgi?id=268597&amp;action=review

&gt; Source/JavaScriptCore/ftl/FTLLowerDFGToLLVM.cpp:345
&gt; +                jit.copyCalleeSavesToVMCalleeSavesBuffer();

I have to add AllowMacroScratchRegisterUsage above here.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1154055</commentid>
    <comment_count>5</comment_count>
      <attachid>268597</attachid>
    <who name="Saam Barati">saam</who>
    <bug_when>2016-01-08 16:33:21 -0800</bug_when>
    <thetext>Comment on attachment 268597
the patch

r=me</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1154058</commentid>
    <comment_count>6</comment_count>
    <who name="Filip Pizlo">fpizlo</who>
    <bug_when>2016-01-08 16:38:39 -0800</bug_when>
    <thetext>Landed in http://trac.webkit.org/changeset/194805</thetext>
  </long_desc>
      
          <attachment
              isobsolete="0"
              ispatch="1"
              isprivate="0"
          >
            <attachid>268597</attachid>
            <date>2016-01-08 16:18:42 -0800</date>
            <delta_ts>2016-01-08 16:33:21 -0800</delta_ts>
            <desc>the patch</desc>
            <filename>blah.patch</filename>
            <type>text/plain</type>
            <size>3512</size>
            <attacher name="Filip Pizlo">fpizlo</attacher>
            
              <data encoding="base64">SW5kZXg6IFNvdXJjZS9KYXZhU2NyaXB0Q29yZS9DaGFuZ2VMb2cKPT09PT09PT09PT09PT09PT09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</data>
<flag name="review"
          id="293571"
          type_id="1"
          status="+"
          setter="saam"
    />
          </attachment>
      

    </bug>

</bugzilla>