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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - The code does not compile"
href="https://bugs.llvm.org/show_bug.cgi?id=37721">37721</a>
</td>
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<tr>
<th>Summary</th>
<td>The code does not compile
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<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>C++
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>zhonghao@pku.org.cn
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>The code is as follow:
#include <iostream>
template <class P>
class ptr
{
public:
// Picked in C++11 mode.
template<class T>
ptr operator- (T) const
{ return *this; }
};
// Picked in default C++ mode.
template<class T1, class T2>
int operator- (const ptr<T1>&, const ptr<T2>&)
{ return 0; }
int
main ()
{
ptr <int> a, b;
std::cout << (b - a) << "\n";
}
It compiles fine with g++. Indeed, the code sample comes from a previous report
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - attached testcase compiles in c++ mode, but not in c++11 mode"
href="show_bug.cgi?id=12961">https://bugs.llvm.org/show_bug.cgi?id=12961</a>
The report is marked as fixed, but clang++ still does not compile the code.</pre>
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</p>
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