[dcl.fct]
Change: Make exception specifications be part of the type system.
Rationale: Improve type-safety.
Effect on original feature:
Valid C++ 2014 code may fail to compile or change meaning in this
International Standard:
void g1() noexcept;
void g2();
template<class T> int f(T *, T *);
int x = f(g1, g2); // ill-formed; previously well-formed
[dcl.init.aggr]
Change: Definition of an aggregate is extended
to apply to user-defined types with base classes.
Rationale: To increase convenience of aggregate initialization.
Effect on original feature:
Valid C++ 2014 code may fail to compile or produce different results in this
International Standard; initialization from an empty initializer list will
perform aggregate initialization instead of invoking a default constructor
for the affected types:
struct derived;
struct base {
friend struct derived;
private:
base();
};
struct derived : base {};
derived d1{}; // Error. The code was well-formed before.
derived d2; // still OK