Overload using nogc

[Jonathan Marler via Digitalmars-d]

Has the idea of function overloading via nogc been explored?

void func() @nogc
{
     // logic that does not use GC
}
void func()
{
     // logic that uses GC
}
void main(string[] args) // @nogc
{
     // if main is @nogc, then the @nogc version of func
     // will be called, otherwise, the GC version will be
     func();
}

This could be useful for the standard library to expose different 
implementations based on whether or not the application is using 
the GC.