非依赖名称的重载解析何时发生，在定义上下文或实例化点？
When does overload resolution of non-dependent name take place, in definition context or point of instantiation?
3.4 [basic.lookup]/p1
Overload resolution (13.3) takes place after name lookup has succeeded.
void g(long);
void g(int, int);
template<class T> void f() { g(0); }
void g(int, int = 0) {}
int main(){
f<int>();
}
gcc编译成功，clang编译失败
非依赖名称的重载解析何时发生，是在定义上下文中还是在实例化点？或者两者都对？
如果我对查找规则的理解是正确的，那么由于 g() 是一个非依赖名称，所以在阶段 2 中不会添加重载集。因此 [=11] 的唯一选择=]在定义点是g(long)，Clang是正确的。
我当然会天真地 期望 只考虑 g(long) 给定定义的顺序，但是当模板是涉及...
在这两种情况下。
[temp.res]14.6
If a hypothetical instantiation of a template immediately following
its definition would be ill-formed due to a construct that does not
depend on a template parameter, the program is ill-formed; no
diagnostic is required. If the interpretation of such a construct in
the hypothetical instantiation is different from the interpretation of
the corresponding construct in any actual instantiation of the
template, the program is ill-formed; no diagnostic is required.
[temp.nondep]14.6.3
Non-dependent names used in a template definition are found using the
usual name lookup and bound at the point they are used.
所以两个编译器都是对的。
3.4 [basic.lookup]/p1
Overload resolution (13.3) takes place after name lookup has succeeded.
void g(long);
void g(int, int);
template<class T> void f() { g(0); }
void g(int, int = 0) {}
int main(){
f<int>();
}
gcc编译成功，clang编译失败
非依赖名称的重载解析何时发生，是在定义上下文中还是在实例化点？或者两者都对？
如果我对查找规则的理解是正确的，那么由于 g() 是一个非依赖名称，所以在阶段 2 中不会添加重载集。因此 [=11] 的唯一选择=]在定义点是g(long)，Clang是正确的。
我当然会天真地 期望 只考虑 g(long) 给定定义的顺序，但是当模板是涉及...
在这两种情况下。
[temp.res]14.6
If a hypothetical instantiation of a template immediately following its definition would be ill-formed due to a construct that does not depend on a template parameter, the program is ill-formed; no diagnostic is required. If the interpretation of such a construct in the hypothetical instantiation is different from the interpretation of the corresponding construct in any actual instantiation of the template, the program is ill-formed; no diagnostic is required.
[temp.nondep]14.6.3
Non-dependent names used in a template definition are found using the usual name lookup and bound at the point they are used.
所以两个编译器都是对的。