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<!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>261485</bug_id>
          
          <creation_ts>2023-09-12 16:54:35 -0700</creation_ts>
          <short_desc>`Expected` constructor with `unexpect` tag is broken</short_desc>
          <delta_ts>2023-09-12 22:27:31 -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>Web Template Framework</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="Jean-Yves Avenard [:jya]">jean-yves.avenard</reporter>
          <assigned_to name="Gerald Squelart">g_squelart</assigned_to>
          <cc>g_squelart</cc>
    
    <cc>webkit-bug-importer</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1977181</commentid>
    <comment_count>0</comment_count>
    <who name="Jean-Yves Avenard [:jya]">jean-yves.avenard</who>
    <bug_when>2023-09-12 16:54:35 -0700</bug_when>
    <thetext>Trying to construct an `Expected&lt;int, double&gt;` using `Expected(unexpect, 32.0)` gave me a compilation error 
&quot;No viable conversion from &apos;std::experimental::unexpected&lt;double&gt;&apos; to &apos;value_type&apos; (aka &apos;int&apos;)&quot;

The code is wrong 
https://searchfox.org/wubkat/rev/b38121da42a0483fdb1bc13782f1c7a8059de100/Source/WTF/wtf/Expected.h#448

`template&lt;class... Args&gt; constexpr explicit expected(unexpected_t, Args&amp;&amp;... args) : base(__expected_detail::value_tag, unexpected_type(std::forward&lt;Args&gt;(args)...)) { }`
should be:

`template&lt;class... Args&gt; constexpr explicit expected(unexpected_t, Args&amp;&amp;... args) : base(__expected_detail::error_tag, unexpected_type(std::forward&lt;Args&gt;(args)...)) { }`</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1977199</commentid>
    <comment_count>1</comment_count>
    <who name="Radar WebKit Bug Importer">webkit-bug-importer</who>
    <bug_when>2023-09-12 18:55:21 -0700</bug_when>
    <thetext>&lt;rdar://problem/115401559&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1977202</commentid>
    <comment_count>2</comment_count>
    <who name="Gerald Squelart">g_squelart</who>
    <bug_when>2023-09-12 19:09:53 -0700</bug_when>
    <thetext>Pull request: https://github.com/WebKit/WebKit/pull/17720</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1977220</commentid>
    <comment_count>3</comment_count>
    <who name="EWS">ews-feeder</who>
    <bug_when>2023-09-12 22:27:25 -0700</bug_when>
    <thetext>Committed 267931@main (95191e8f4045): &lt;https://commits.webkit.org/267931@main&gt;

Reviewed commits have been landed. Closing PR #17720 and removing active labels.</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>