https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103843
Bug ID: 103843
Summary: Direct call to Desctructor is optimized out
Product: gcc
Version: 10.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: georgii.sha...@be-tse.de
Target Milestone: ---
cat ./d.cpp
#include <iostream>
class S {
public:
S() = default;
~S() { i=10; }
void foo() { this->~S(); }
int getI() const { return i; }
private:
int i{0};
};
int main()
{
S s;
do {
std::cout << "Before foo: " << s.getI();
s.foo();
std::cout << "; After: " << s.getI() << std::endl;
} while (false);
return 0;
}
g++ -O0 ./d.cpp
$./a.out
Before foo: 0; After: 10
g++ -O3 ./d.cpp
georgii@ltgscosvm:~/prj/test$./a.out
Before foo: 0; After: 0
gcc --version
gcc (GCC) 10.2.1 20210130 (Red Hat 10.2.1-11)
Copyright (C) 2020 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
hostnamectl
Static hostname: ltgscosvm.be-tse01.de
Icon name: computer-vm
Chassis: vm
Machine ID: fb944a0ffb46449f9b639e589d00b598
Boot ID: 433e59a4db5c419a9081cc6968e4e590
Virtualization: microsoft
Operating System: CentOS Linux 7 (Core)
CPE OS Name: cpe:/o:centos:centos:7
Kernel: Linux 3.10.0-1160.45.1.el7.x86_64
Architecture: x86-64
uname -a
Linux ltgscosvm.be-tse01.de 3.10.0-1160.45.1.el7.x86_64 #1 SMP Wed Oct 13
17:20:51 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
