Compiler Error C2088

'operator' : illegal for 'class-key'

The operator was not defined for the structure or union. This error is only valid for C code.

The following sample generates C2088 three times:

// C2088.c
struct S {
   int m_i;
} s;

int main() {
   int i = s * 1;   // C2088
   struct S s2 = +s;   // C2088
   s++;   // C2088
}