https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85831
Bug ID: 85831
Summary: <stdexcept> types should have move constructors and
move assignment operators
Product: gcc
Version: 8.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: redi at gcc dot gnu.org
Target Milestone: ---
The standard says:
namespace std {
class logic_error : public exception {
public:
explicit logic_error(const string& what_arg);
explicit logic_error(const char* what_arg);
};
}
The lack of user-declared special members means that a move constructor and
move assignment operator should be implicitly declared.
But we define:
class logic_error : public exception
{
[...]
virtual ~logic_error() _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_USE_NOEXCEPT;
[...]
};
The user-declared destructor means there is no move constructor or move
assignment operator.
(The user-defined destructor is the key function and ensures the vtable and
RTTI are only emitted in the library, not in every TU).
