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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - MSVC: attachment points at wrong subprogram for function"
href="https://llvm.org/bugs/show_bug.cgi?id=25564">25564</a>
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<tr>
<th>Summary</th>
<td>MSVC: attachment points at wrong subprogram for function
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>DebugInfo
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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</tr>
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<th>Reporter</th>
<td>alex@crichton.co
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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</tr>
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<th>Classification</th>
<td>Unclassified
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</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=15309" name="attach_15309" title="Failing IR">attachment 15309</a> <a href="attachment.cgi?id=15309&action=edit" title="Failing IR">[details]</a></span>
Failing IR
When compiling the attached IR with llc, I get:
!dbg attachment points at wrong subprogram for function
!1 = distinct !DISubprogram(name: "main", linkageName:
"_ZN19backtrace_debuginfo4mainE", scope: !3, file: !2, line: 1, type: !4,
isLocal: true, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped,
isOptimized: true, templateParams: !5, variables: !5)
void ()* @foo
call void @bar(), !dbg !19
!19 = !DILocation(line: 1219, scope: !20, inlinedAt: !21)
!25 = distinct !DILexicalBlock(scope: !26, file: !2, line: 1, column: 10)
!26 = distinct !DISubprogram(name: "main", linkageName:
"_ZN19backtrace_debuginfo4mainE", scope: !3, file: !2, line: 1, type: !4,
isLocal: true, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped,
isOptimized: true, templateParams: !5, variables: !5)
LLVM ERROR: Broken function found, compilation aborted!
But when the target is changed to x86_64-unknown-linux-gnu the file compiles
successfully. I'm not 100% sure that we correctly emit debuginfo in the first
place (not my area of expertise), and this may also be related to r252219 but I
figured it was odd at least that it failed to compile with an MSVC target yet
successfully compiled for a Linux one!</pre>
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