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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Clang compiler failed with error: no matching member function for call to 'f'"
href="https://bugs.llvm.org/show_bug.cgi?id=39180">39180</a>
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<th>Summary</th>
<td>Clang compiler failed with error: no matching member function for call to 'f'
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>6.0
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>C++
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>soumi.manna@intel.com
</td>
</tr>
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<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
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<p>
<div>
<pre>Clang compiler failed on windows with error: no matching member function for
call to 'f' for the following example.
bug.cpp:10:19: error: no matching member function for call to 'f'
int b = a.f();
~~^
bug.cpp:2:34: note: candidate template ignored: deduced too few arguments for
expanded pack 'T'; no argument for 1st
expanded parameter in deduced argument pack <>
template<Types ...T> int f() {
^
1 error generated.
Microsoft visual studio 2017 passes the example.
ksh-3.2$ cl -c -std:c++17 bug.cpp
Microsoft (R) C/C++ Optimizing Compiler Version 19.13.26131.1 for x64
Copyright (C) Microsoft Corporation. All rights reserved.
bug.cpp
ksh-3.2$ cat bug.cpp
template<class ...Types> struct Tuple_ { // _VARIADIC_TEMPLATE
template<Types ...T> int f() {
return sizeof...(Types);
}
};
int main(int argc, char *argv[])
{
Tuple_<char,int> a;
int b = a.f();
}
Soumi Manna
Intel C/C++ Front-end team</pre>
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