https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91287
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-07-31
Ever confirmed|0 |1
--- Comment #17 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #16)
> (In reply to Richard Biener from comment #15)
> > Honza probably knows where we output the LTO symtab and why we do not put
> > undefs for builtins there.
>
> #include <math.h>
> double y, z;
> void foo ();
> int main()
> {
> volatile double x = atan2 (y, z);
> foo ();
> }
>
> > gcc-8 -c t.c -flto
> > gcc-nm t.o
> U foo
> 00000000 T main
> 00000000 C y
> 00000000 C z
>
> where's the
>
> U atan2
>
> ?
For
double atan2 (double x, double y) { return x + y; }
it doesn't appear either, this CU has an empty symbol table...
I do remember quite some "funs" with builtin handling though, so the
current handling may be the least bad of all choices...
