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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Wrong processing of substitution failure in an atomic constraint of template function requires-clause"
href="https://bugs.llvm.org/show_bug.cgi?id=52366">52366</a>
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<th>Summary</th>
<td>Wrong processing of substitution failure in an atomic constraint of template function requires-clause
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>13.0
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>Windows NT
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>enhancement
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>C++2a
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>fchelnokov@gmail.com
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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>
<div>
<pre>Below code is valid, because sizeof(int)>0:
```
template<class T, class U>
void g() requires(sizeof(T)>0 || sizeof(U)>0) {}
int main() {
g<void,int>(); //error in Clang
}
```
It is accepted by GCC, but unfortunately not by Clang. Demo:
<a href="https://gcc.godbolt.org/z/P69beYhqY">https://gcc.godbolt.org/z/P69beYhqY</a>
Related discussion: <a href="https://stackoverflow.com/q/69173117/7325599">https://stackoverflow.com/q/69173117/7325599</a></pre>
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