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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - call to constexpr variadic class member function is not emitted (and triggers warning)"
href="https://bugs.llvm.org/show_bug.cgi?id=50207">50207</a>
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<th>Summary</th>
<td>call to constexpr variadic class member function is not emitted (and triggers warning)
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
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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
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<th>Component</th>
<td>C++2a
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
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<th>Reporter</th>
<td>ldalessandro@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>
<div>
<pre>In the following example, the call to `foo` is not emitted.
```
struct Foo {
constexpr static int bar() {
return foo(42);
}
constexpr static int foo(int, auto...) {
return 0;
}
};
// warning: inline function 'Foo::foo<>' is not defined [-Wundefined-inline]
int i = Foo::bar();
```
1. If I reorder the definitions of `bar` and `foo` this works fine.
2. If I add some unused function `car` after the definition of `foo` this works
fine.
3. If foo is not a variadic template it works fine.
3. The `static`ness if the function is irrelevant, just makes the example
smaller.
See a working version at <a href="https://godbolt.org/z/dKqze6fKn">https://godbolt.org/z/dKqze6fKn</a>.</pre>
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