Re: [PATCH] latent_entropy: make builtin_frame_address implicit

[sahara <kpark3469@xxxxxxxxx>]

> > --- a/scripts/gcc-plugins/latent_entropy_plugin.c
> > +++ b/scripts/gcc-plugins/latent_entropy_plugin.c
> > @@ -446,6 +446,8 @@ static void init_local_entropy(basic_block bb, tree 
local_entropy)
> >      frame_addr = create_var(ptr_type_node, "local_entropy_frameaddr");
> >
> >      /* 2. local_entropy_frameaddr = __builtin_frame_address() */
> > +    if (!builtin_decl_implicit_p(BUILT_IN_FRAME_ADDRESS))
> > +            set_builtin_decl_implicit_p(BUILT_IN_FRAME_ADDRESS, true);
>
> Interesting! Is this aarch64-specific or something that has changed in
> more recent GCC versions?
>
> Thanks!
>
> -Kees

This is Android's aarch64-specific. Tested and reproduced in 8.1.
I haven't seen this problem with Linaro toolchains.

- Sahara