编译器错误 C2770

“template”的显式模板或泛型参数无效

具有显式模板或泛型参数的函数模板候选项导致不允许的函数类型。

以下示例生成 C2770:

// C2770.cpp
#include <stdio.h>
template <class T>
int f(typename T::B*);   // expects type with member B

struct Err {};

int main() {
   f<int>(0);   // C2770 int has no B
   // try the following line instead
   f<OK>(0);
}