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If I have a function overload set similar to
template<typename T> void f(T&& t, int x = 1);
void f(int x = 0);
Which of these will be called in preference if I call f with an integer argument? e.g.
f(5);
void f(int x = 0);will be called. During overload resolution, a non-template is always preferred over a template when the argument type is an exact match (i.e., needs no conversions) – see §13.3.3/1.(Note that if the non-template overload were instead
void f(long x = 0);and the callsite remained the same, or if the overload remained the same but the callsite were insteadf(5L);, the template overload would be invoked instead.)