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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - user defined deduction guide isn't found in case of nested template class if outer template argument is itself a template parameter"
href="https://bugs.llvm.org/show_bug.cgi?id=45281">45281</a>
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<th>Summary</th>
<td>user defined deduction guide isn't found in case of nested template class if outer template argument is itself a template parameter
</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>MacOS X
</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
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<th>Component</th>
<td>C++17
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>holger@pirk.name
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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>Following up on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - user defined deduction guide isn't found in case of nested template class"
href="show_bug.cgi?id=34520">https://bugs.llvm.org/show_bug.cgi?id=34520</a>, the following does
not work in clang:
```
#include <string>
template <class>
struct Foo {
template <class T>
struct Bar {
Bar(T) { }
};
Bar(char const*) -> Bar<std::string>;
};
int main() {
Foo<int>::Bar bar("abc");
static_cast<void>(bar);
}
template <typename T> void templated() { Foo<T>::Bar bar("abc"); };
```
It is the same example code but the last line is added. MSVC does not seem to
have this problem (according to godbolt.org).</pre>
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