<html>
<head>
<base href="https://llvm.org/bugs/" />
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - -Wpessimizing-move doesn't trigger inside template instantiations"
href="https://llvm.org/bugs/show_bug.cgi?id=25911">25911</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>-Wpessimizing-move doesn't trigger inside template instantiations
</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>
<tr>
<th>OS</th>
<td>Windows NT
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>C++11
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>dcheng@google.com
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - fixits should not be issued within template instantiations"
href="show_bug.cgi?id=9679">https://llvm.org/bugs/show_bug.cgi?id=9679</a> is a bug that indicates that it's
generally unsafe to emit fix-its inside template instantiations.
However, this leads to omission of a pessimizing-move warning in some
circumstances where it could apply. One example:
dcheng@nausicaa:~/src/chrome/src$ cat test.cc
#include <utility>
template<typename T>
class my_scoped_ptr {
public:
explicit my_scoped_ptr(T* ptr) : ptr_(ptr) {}
~my_scoped_ptr() { delete ptr_; }
my_scoped_ptr(my_scoped_ptr&& other) : ptr_(nullptr) {
using std::swap;
swap(ptr_, other.ptr_);
}
static my_scoped_ptr New() { return std::move(my_scoped_ptr(nullptr)); }
private:
T* ptr_;
};
int main() {
my_scoped_ptr<int> scoper = my_scoped_ptr<int>::New();
}
dcheng@nausicaa:~/src/chrome/src$
third_party/llvm-build/Release+Asserts/bin/clang++ -std=c++11 -W
all test.cc
dcheng@nausicaa:~/src/chrome/src$</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>