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Re: PATCH: Add ifunc attribute
> > Why wouldn't Roland's proposal work with C++?
> I am not sure it will work for C++, especially for member functions.
That isn't actually an answer to the question, you know.
Why wouldn't it?
I had not thought about name mangling before, but I don't see a special
problem if you treat it in what seems to me the obvious way. With:
__typeof (foo) *foo_finder (void) __attribute__ ((ifunc ("foo")));
The mangling of "foo" goes with the type of "foo". Either you could say
that a foo prototype must be in scope, and it literally uses the type of
"foo", but that is probably a confusing definition given overloading.
With C++ overloading you can't actually use __typeof (foo), of course.
void foo (int);
void foo (float);
void (*foo_int_finder (void)) (int) __attribute__ ((ifunc ("foo")));
void (*foo_float_finder (void)) (float) __attribute__ ((ifunc ("foo")));
So what you say is that the function type to which *_finder's return type
is a pointer, is the type of "foo" for name-mangling purposes. Same with
s/foo/someclass::foo/ for a member function.