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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - ItaniumDemangle - struct Db alignment warnings"
href="https://bugs.llvm.org/show_bug.cgi?id=37944">37944</a>
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<th>Summary</th>
<td>ItaniumDemangle - struct Db alignment warnings
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<th>Product</th>
<td>new-bugs
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<th>Version</th>
<td>unspecified
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>Windows NT
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>enhancement
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>new bugs
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>llvm-dev@redking.me.uk
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<th>CC</th>
<td>erik.pilkington@gmail.com, i@maskray.me, llvm-bugs@lists.llvm.org, maskray@google.com, sepavloff@gmail.com
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<p>
<div>
<pre>MSVC is warning of alignment issues in the code:
ItaniumPartialDemangler::ItaniumPartialDemangler()
: RootNode(nullptr), Context(new Db{nullptr, nullptr}) {}
C:\ps4-buildslave2\llvm-clang-lld-x86_64-scei-ps4-windows10pro-fast\llvm.src\lib\Demangle\ItaniumDemangle.cpp(5164):
warning C4316: '`anonymous-namespace'::Db': object allocated on the heap may
not be aligned 16
<a href="http://lab.llvm.org:8011/builders/llvm-clang-lld-x86_64-scei-ps4-windows10pro-fast/builds/17987/steps/build/logs/warnings%20%284%29">http://lab.llvm.org:8011/builders/llvm-clang-lld-x86_64-scei-ps4-windows10pro-fast/builds/17987/steps/build/logs/warnings%20%284%29</a>
I think this is due to Db containing BumpPointerAllocator which contains an
aligned member:
class BumpPointerAllocator {
...
alignas(16) char InitialBuffer[AllocSize];
...
};</pre>
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