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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - initializer list {} fails for template instantiation + map + tuple +vector"
href="https://bugs.llvm.org/show_bug.cgi?id=47931">47931</a>
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<th>Summary</th>
<td>initializer list {} fails for template instantiation + map + tuple +vector
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>11.0
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<th>Hardware</th>
<td>All
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>normal
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>C++
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>juanlucasrey@gmail.com
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<th>CC</th>
<td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<pre>Created <span class=""><a href="attachment.cgi?id=24085" name="attach_24085" title="fail exemple">attachment 24085</a> <a href="attachment.cgi?id=24085&action=edit" title="fail exemple">[details]</a></span>
fail exemple
this is a pretty specific bug, probably due to the explicit instantiation:
when having an initialisation list for a std::map<something1,
std::tuple<something2, std::vector<something3>>> inside an explicitly
instantiated function, there is a failure of type:
Undefined symbols for architecture x86_64: std::__1::allocator<unsigned long> >
<span class="quote">>::~tuple()"</span >
there is no reason why the attached code should fail to compile, and it
actually works on gcc.
note:
-remove the explicit instantiation and it works
-replace the vector by a simple type like int and it works
-remove the map and it works
I used "clang++ -std=c++17 ./clangbug.cpp"
sorry I'm new here let me know if anything else is needed</pre>
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