https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109172
Bug ID: 109172 Summary: g++ calls a private destructor with the keyword throw after the try-block Product: gcc Version: 13.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: MikeSmith32564 at mail dot com Target Milestone: --- Created attachment 54692 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=54692&action=edit Bug example In the attached example an instance of class Demo is constructed in-place in a buffer by following the natural alignment of Demo and then this instance is passed to throw. Note that Demo has a private destructor. The expected behavior when building is that g++ should return a compilation error because a private destructor cannot be called outisde of the class Demo or outside of friend declarations. The actual behavior is that the example builds successfully when g++ -std=c++11 ./main.cpp -o ./main is used, producing the following output: Demo(), id = 1 Demo(const Demo&) called, this->id = 2, other.id = 1 in catch, e.id = 2 ~Demo(), id = 2 main ends here If the destructor is instead declared as deleted the example fails to compile as expected: main.cpp: In function 'int main()': main.cpp:69:10: error: use of deleted function 'Demo::~Demo()' throw *d; ^ main.cpp:61:2: note: declared here ~Demo() = delete; ^