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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Failure to deduce templated CNTTP"
href="https://bugs.llvm.org/show_bug.cgi?id=50039">50039</a>
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<th>Summary</th>
<td>Failure to deduce templated CNTTP
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
</td>
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<th>Status</th>
<td>NEW
</td>
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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>C++2a
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>omer.rosler@gmail.com
</td>
</tr>
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<th>CC</th>
<td>blitzrakete@gmail.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<p>
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<pre>The following is not accepted by clang:
```c++
template <auto> struct A { };
template <class> struct B { };
template<template <class> class Tmpl, Tmpl V> //error
void f (A<V>);
template<template <class> class Tmpl, class T, Tmpl<T> V> //this one works
void g (A<V>);
int main() {
A<B<int>{}> x;
f(x);
}
```
b.t.w gcc ICEs here (<a href="https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99387">https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99387</a>)</pre>
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