<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="Generator" content="Microsoft Word 14 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri","sans-serif";}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-US" link="blue" vlink="purple">
<div class="WordSection1">
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">LLVMSymbolizer is invoked while trying to pretty-print a crash backtrace. "error reading file" suggests that you are on Windows and it cannot find the .pdb
file with symbol information.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">If that's the case, are you doing either a Debug or RelWithDebInfo build? If you are, I don't know what else to suggest.<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>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Note that LLVMSymbolizer is trying to make the traceback more understandable; it has nothing to do with the cause of your problem. If you are triggering an
assertion, the assertion message should tell you where that is. (You did run cmake with –DLLVM_ENABLE_ASSERTIONS=ON, right?) If not, likely you are dereferencing a null pointer somewhere. Personally I debug with 'printf' statements, but that's just me.<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"><a name="_MailEndCompose"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></a></p>
<div style="border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt">
<div>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> llvm-dev [mailto:llvm-dev-bounces@lists.llvm.org]
<b>On Behalf Of </b>Ahmad Nouralizadeh via llvm-dev<br>
<b>Sent:</b> Tuesday, August 07, 2018 11:03 AM<br>
<b>To:</b> llvm-dev@lists.llvm.org<br>
<b>Subject:</b> [llvm-dev] Error Calling eraseFromParent()<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">Hi.<o:p></o:p></p>
<div>
<p class="MsoNormal">This is part of my code:<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">...<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">if (auto* op = dyn_cast<BinaryOperator>(&I)) {<o:p></o:p></p>
</div>
<div>
<div>
<p class="MsoNormal"> Value* lhs = op->getOperand(0);<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> Value* rhs = op->getOperand(1);<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> Value* mul = builder.CreateMul(lhs, rhs);<o:p></o:p></p>
</div>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal"> for (auto& U : op->uses()) {<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> User* user = U.getUser();<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> user->setOperand(U.getOperandNo(), mul);<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> }<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal"> I.eraseFromParent();<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">}<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">...<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">This leads to the following runtime error:<o:p></o:p></p>
</div>
<div>
<div>
<p class="MsoNormal">LLVMSymbolizer: error reading file: No such file or directory<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">...<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Does anybody know the solution?<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Regards.<o:p></o:p></p>
</div>
</div>
</div>
</div>
</div>
</body>
</html>