NAME¶

std::exception::what - std::exception::what

Synopsis¶

virtual const char* what() const throw(); (until C++11)
virtual const char* what() const noexcept; (since C++11)

Returns the explanatory string.

Parameters¶

(none)

Return value¶

Pointer to a null-terminated string with explanatory information. The pointer is
guaranteed to be valid at least until the exception object from which it is obtained
is destroyed, or until a non-const member function on the exception object is
called.

Defect reports

The following behavior-changing defect reports were applied retroactively to
previously published C++ standards.

DR Applied to Behavior as published Correct behavior
LWG 108 C++98 it was unspecified when the returned pointer specified
becomes invalid