Re: [PATCH 2/2] bpf: allow BSS symbols to be global symbols

[Jose E. Marchesi via Gcc-patches]

Hi YiFei.

> Prior to this, a BSS declaration such as:
>
>   int foo;
>   static int bar;
>
> Generates:
>
>   .global foo
>   .local  foo
>   .comm   foo,4,4
>   .local  bar
>   .comm         bar,4,4
>
> Creating symbols:
>
>   0000000000000000 b foo
>   0000000000000004 b bar
>
> Both symbols are local. However, libbpf bpf_object__variable_offset
> rquires symbols to be STB_GLOBAL & STT_OBJECT for data section lookup.
> This patch makes the same declaration generate:
>
>   .global foo
>   .type   foo, @object
>   .lcomm  foo,4,4
>   .local  bar
>   .comm   bar,4,4
>
> Creating symbols:
>
>   0000000000000000 B foo
>   0000000000000004 b bar
>
> And libbpf will be okay with looking up the global symbol "foo".

Thanks for the patch.
This is OK for both master and GCC 10.