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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - clang-cl crash with -Z7 / -Zi, variable templates and expression SFINAE (regression in 8.0.0)"
href="https://bugs.llvm.org/show_bug.cgi?id=41985">41985</a>
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<th>Summary</th>
<td>clang-cl crash with -Z7 / -Zi, variable templates and expression SFINAE (regression in 8.0.0)
</td>
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<th>Product</th>
<td>new-bugs
</td>
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<th>Version</th>
<td>8.0
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
</td>
</tr>
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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>new bugs
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>andreas.zapf@ableton.com
</td>
</tr>
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<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=21990" name="attach_21990" title="Error output with backtrace">attachment 21990</a> <a href="attachment.cgi?id=21990&action=edit" title="Error output with backtrace">[details]</a></span>
Error output with backtrace
template<typename T>
using void_t = void;
template <typename T, typename = void>
const bool has_m = false;
template <typename T>
const bool has_m<T, void_t<decltype(T().m())>> = true;
struct X
{
int m() const
{
return 0;
}
};
bool crash()
{
return has_m<X>;
}
Compiler invocation: clang-cl -std:c++14 -c -Z7 (or -Zi)
This compiles fine with clang-cl 7.0.1. With clang-cl 8.0.0 it compiles when
the -Z? option is omitted.</pre>
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