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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 - Bogus error/note about dependent base classes on template instantiation failure"
href="https://bugs.llvm.org/show_bug.cgi?id=48339">48339</a>
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<th>Summary</th>
<td>Bogus error/note about dependent base classes on template instantiation failure
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>11.0
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Frontend
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>wtt6@cornell.edu
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org, neeilans@live.com, richard-llvm@metafoo.co.uk
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<p>
<div>
<pre>The below code is invalid (the template parameter of g cannot be deduced), but
before giving the correct error clang reports
bug.cpp:11:5: error: use of undeclared identifier 'g'
g(typename T::type{});
^
this->
bug.cpp:16:7: note: in instantiation of function template specialization
'S::f<X>' requested here
S{}.f<X>();
^
bug.cpp:7:15: note: must qualify identifier to find this declaration in
dependent base class
static void g(typename T::type) {}
which make no sense as there are no base classes here, dependent or otherwise.
These messages are not present if g is not marked static.
struct X {
struct type {};
};
struct S {
template <typename T>
static void g(typename T::type) {}
template <typename T>
void f() {
g(typename T::type{});
}
};
void f() {
S{}.f<X>();
}</pre>
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</p>
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