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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - "Function already has body?" assert on explicitly defaulted non-trivial dllexport ctor during explicit template instantiation"
href="https://bugs.llvm.org/show_bug.cgi?id=42857">42857</a>
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<th>Summary</th>
<td>"Function already has body?" assert on explicitly defaulted non-trivial dllexport ctor during explicit template instantiation
</td>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>LLVM Codegen
</td>
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<th>Assignee</th>
<td>hans@chromium.org
</td>
</tr>
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<th>Reporter</th>
<td>hans@chromium.org
</td>
</tr>
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<th>CC</th>
<td>alexandre.ganea@ubisoft.com, llvm-bugs@lists.llvm.org, neeilans@live.com, richard-llvm@metafoo.co.uk
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<p>
<div>
<pre>struct Bar { Bar(); };
template <typename T> struct Foo { __declspec(dllexport) Foo() = default; Bar
b; };
template class Foo<int>;
$ clang -c -target i686-pc-win32 /tmp/b.cc
clang-9: /work/llvm.monorepo/clang/lib/CodeGen/CodeGenFunction.cpp:662: void
clang::CodeGen::CodeGenFunction::StartFunction(clang::GlobalDecl,
clang::QualType, llvm::Function*, const clang::CodeGen::CGFunctionInfo&, const
clang::CodeGen::FunctionArgList&, clang::SourceLocation,
clang::SourceLocation): Assertion `CurFn->isDeclaration() && "Function already
has body?"' failed.
Reported by Alexandre here: <a href="https://reviews.llvm.org/D65511#1608860">https://reviews.llvm.org/D65511#1608860</a></pre>
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