<div dir="ltr">This change broke clang/ubsan bot.<div><a href="http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-fast/builds/6047/steps/check-clang%20ubsan/logs/stdio">http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-fast/builds/6047/steps/check-clang%20ubsan/logs/stdio</a><br></div><div><br></div><div>It looks like the value you are initializing SavedAK with may itself be uninitialized? I see a few constructors that do not mention it.</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Jun 29, 2017 at 9:08 AM, Vassil Vassilev via cfe-commits <span dir="ltr"><<a href="mailto:cfe-commits@lists.llvm.org" target="_blank">cfe-commits@lists.llvm.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Author: vvassilev<br>
Date: Thu Jun 29 09:08:10 2017<br>
New Revision: 306692<br>
<br>
URL: <a href="http://llvm.org/viewvc/llvm-project?rev=306692&view=rev" rel="noreferrer" target="_blank">http://llvm.org/viewvc/llvm-<wbr>project?rev=306692&view=rev</a><br>
Log:<br>
Initialize variable and silence potentially uninitialized warning.<br>
<br>
Patch by Liza Sakellari!<br>
<br>
Modified:<br>
    cfe/trunk/include/clang/Sema/<wbr>Lookup.h<br>
<br>
Modified: cfe/trunk/include/clang/Sema/<wbr>Lookup.h<br>
URL: <a href="http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Sema/Lookup.h?rev=306692&r1=306691&r2=306692&view=diff" rel="noreferrer" target="_blank">http://llvm.org/viewvc/llvm-<wbr>project/cfe/trunk/include/<wbr>clang/Sema/Lookup.h?rev=<wbr>306692&r1=306691&r2=306692&<wbr>view=diff</a><br>
==============================<wbr>==============================<wbr>==================<br>
--- cfe/trunk/include/clang/Sema/<wbr>Lookup.h (original)<br>
+++ cfe/trunk/include/clang/Sema/<wbr>Lookup.h Thu Jun 29 09:08:10 2017<br>
@@ -465,10 +465,9 @@ public:<br>
         Paths = nullptr;<br>
       }<br>
     } else {<br>
-      AmbiguityKind SavedAK;<br>
+      AmbiguityKind SavedAK = Ambiguity;<br>
       bool WasAmbiguous = false;<br>
       if (ResultKind == Ambiguous) {<br>
-        SavedAK = Ambiguity;<br>
         WasAmbiguous = true;<br>
       }<br>
       ResultKind = Found;<br>
<br>
<br>
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</blockquote></div><br></div>