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<p class="MsoNormal">================<br>
Comment at: llvm/include/llvm/MC/MCDwarf.h:56<br>
+  /// The MD5 checksum, if there is one.<br>
+  MD5::MD5Result *Checksum = nullptr;<br>
 };<br>
----------------<br>
aprantl wrote:<br>
> Optional<MD5::MD5Result>?<br>
probinson:<o:p></o:p></p>
<p class="MsoNormal">This is a non-owning pointer to data allocated in MCContext.  Does that change your opinion?  (Or Blaikie's?)<o:p></o:p></p>
<p class="MsoNormal">dblaikie:<br>
Roughly sounds OK to me, with some comments about that (and/or maybe a typedef/opaque handle type or something - and document the ownership where that type is defined)<br>
<br>
<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><a name="_MailEndCompose"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">It's a nested class, the only way I know to make it opaque is to un-nest it so it can be forward-declared (affecting not a huge number
 of other places).  Or make this one a void* and cast it once we actually want to do something with it, but this data gets passed through a bunch of APIs and using void* seems bad for self-documentation purposes.<o:p></o:p></span></a></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">So, I'm willing to un-nest the class as a pre-req refactor, or do something else you suggest, but I'd rather not do void*.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">--paulr<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><a href="https://reviews.llvm.org/D41846" target="_blank">https://reviews.llvm.org/D41846</a><br>
<br>
<br>
<o:p></o:p></p>
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