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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Clang not emitting destructor call when assignment constructed with list"
href="https://bugs.llvm.org/show_bug.cgi?id=51695">51695</a>
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<th>Summary</th>
<td>Clang not emitting destructor call when assignment constructed with list
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>All
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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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>C++17
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>lxfind@gmail.com
</td>
</tr>
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<th>CC</th>
<td>blitzrakete@gmail.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<p>
<div>
<pre>In the following code: <a href="https://godbolt.org/z/TK7ersK1M">https://godbolt.org/z/TK7ersK1M</a>
#include <string>
#include <utility>
void doSomething();
class FooClass {
public:
FooClass() noexcept : ptr_() {}
FooClass(FooClass&& other) noexcept
: ptr_(std::exchange(other.ptr_, {})) {}
~FooClass() {
doSomething();
}
FooClass& operator=(FooClass other) noexcept {
std::swap(ptr_, other.ptr_);
return *this;
}
private:
void *ptr_;
};
template <typename T>
class WrapperClass {
public:
void run() noexcept {
wrapper_ = {};
}
private:
FooClass wrapper_;
};
void foo(WrapperClass<std::string> &A) {
A.run();
}
When compiled with either GCC (any std version) or Clang with C++14, the line
"wrapper_ = {};" in WrapperClass::run() will always generate a destructor call
in the end, which is expected.
However when compiled with Clang C++17, the destructor call is not generated,
which seems wrong to me.</pre>
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