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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - destructor of lambda called twice when handling an exception"
href="https://bugs.llvm.org/show_bug.cgi?id=40044">40044</a>
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<th>Summary</th>
<td>destructor of lambda called twice when handling an exception
</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>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>release blocker
</td>
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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
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<th>Reporter</th>
<td>yan_avlasov@hotmail.com
</td>
</tr>
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<th>CC</th>
<td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<p>
<div>
<pre>The following code should print 1. It prints 0. Works with clang 7
#include <iostream>
static int s_count = 0;
template <typename T>
void Foo(T&& t) {
throw 1;
}
int main() {
struct Tracker {
Tracker() { ++s_count; }
Tracker(const Tracker&) { ++s_count; }
Tracker(Tracker&& t) { ++s_count; t.moved_ = true; }
~Tracker() { if (!moved_) --s_count; }
bool moved_ = false;
};
Tracker t;
try {
Foo([t]() {});
} catch (...) {
std::cout << s_count << std::endl;
}
return 0;
}</pre>
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