🚀 go-pugleaf

Hi there.

It would be nice if gcc gave a warning for the line `y=X(Y-Z)'
in the following code. This is similar to the `if (x=y)' situation.
Although it not strictly an error for a c++ compiler, it is almost
always an error for a human programmer.

double X(const double x) {return x;}
double Y() {return 1.0;}
double Z() {return 2.0;}

int main()
{
    double y;
    y=X(1.0+Y); //intended for y=X(1.0+Y()); Error: invalid operands for `-'
    y=X(Y-Z);   //intended for y=X(Y()-Z()); no warning at all!!!
}

Please email me for responses.
Regards,
Yuan P Li