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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - PDB * Linker * module does not contain COFF groups"
href="https://bugs.llvm.org/show_bug.cgi?id=36277">36277</a>
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<th>Summary</th>
<td>PDB * Linker * module does not contain COFF groups
</td>
</tr>
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<th>Product</th>
<td>lld
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>All Bugs
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>stefan.reinalter@molecular-matters.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<p>
<div>
<pre>PDBs produced by MSVC's linker contain a * Linker * compiland that stores COFF
groups as SymTagCoffGroup children of this linker compiland, such as the
following (output produced using DIA2Dump):
CoffGroup : [0x0001:0x00000000] 0x00001000, len = 00003310,
characteristics = 60000020, .text$di
CoffGroup : [0x0002:0x0000030c] 0x0001630C, len = 00000164,
characteristics = 40000040, .CRT$XCU
CoffGroup : [0x000a:0x00000000] 0x00023000, len = 00000104,
characteristics = 40000040, .some_custom_read_only_section
CoffGroup : [0x000c:0x00000000] 0x00025000, len = 00000104,
characteristics = C0000040, .tls
PDBs produced by lld contain the * Linker * compiland but don't store any COFF
groups.
Is this something that could be added to lld?
This is *very* useful information for finding e.g. dynamic initializers,
symbols in thread-local storage, as well as symbols in certain user-defined
sections where you don't know the symbols' names beforehand, but need to be
able to enumerate them.</pre>
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