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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - instantiating a non-type class template with no-linkage object as argument cause clang to crash"
href="https://bugs.llvm.org/show_bug.cgi?id=40266">40266</a>
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<th>Summary</th>
<td>instantiating a non-type class template with no-linkage object as argument cause clang to crash
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>2.6
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<th>Hardware</th>
<td>Macintosh
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<th>OS</th>
<td>MacOS X
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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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>yazandaba@icloud.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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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=21305" name="attach_21305" title="crash backtrace">attachment 21305</a> <a href="attachment.cgi?id=21305&action=edit" title="crash backtrace">[details]</a></span>
crash backtrace
struct StringObject{
constexpr StringObject(const char*ptr){}
};
template<StringObject const&stringObject>
struct String{};
int main(){
String<StringObject{"string"}> obj{};
}
a non-type class template with reference or pointer type must instantiate a
different class templates for each object that get passed to it as an argument
with the above code clang get crashed trying to instantiate a class template
instance with an object with no linkage
****NOTE****: clang is working fine and producing an error with
(-std=c++11,-std=c++14) and don't crash but crash when compiling the code with
(-std=++1z)
the above source code was compiled with only (-std=c++1z) compiler flag</pre>
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