Question

in my cpp file i have the following:

int A()
{
}
void B_A() __attribute__((alias ("A")));

and i am getting the error:
B_A() aliased to undefined symbol A;
however, as u can notice, A is being defined just before that.

so whats the problem!?

Answer 1

From the docs:

In C++, the mangled name for the target must be used.

So, you need the mangled name of A, or you need to give A C linkage so its name doesn’t get mangled in the first place.