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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Improve "x is not a class, namespace, or enumeration" diagnostic. When x is a template class."
href="https://llvm.org/bugs/show_bug.cgi?id=31047">31047</a>
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<th>Summary</th>
<td>Improve "x is not a class, namespace, or enumeration" diagnostic. When x is a template class.
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Frontend
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>peetlugen19@yandex.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>template<typename T>
struct Base {
int foo();
};
template<typename T>
struct Derived : Base<T> {
void bar();
};
template <typename T>
void Derived<T>::bar() {
Base::foo();
}clang
Clang (-std=c++1z -fsyntax-only -Wall):
./test19.cpp:13:3: error: 'Base' is not a class, namespace, or enumeration
Base::foo();
^
./test19.cpp:2:8: note: 'Base' declared here
struct Base {
^
1 error generated.
GCC (v6.2.1):
./test19.cpp: In member function ‘void Derived<T>::bar()’:
./test19.cpp:13:3: error: ‘template<class T> struct Base’ used without template
parameters
Base::foo();
^~~~
It would be nice to have diagnostics like gcc which indicates that Base is
actually a template but it was used without template parameters.</pre>
</div>
</p>
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