[patch][pr22217] Use the most recent decl for mangling

[Richard Smith]

On Thu, Jan 22, 2015 at 12:49 PM, Rafael Espíndola
<rafael.espindola at gmail.com> wrote:
>> It is also a tentative definition in the corresponding case with
>> __attribute__((section)). In that case, both GCC and Clang silently
>> ignore the attribute.
>
> That is not what I am seeing with gcc. Given
>
> int pr22217_foo;
> int *b = &pr22217_foo;
> extern int pr22217_foo __attribute__((section("zed")));
>
> It produces
>
> .section zed,"aw", at progbits
> .align 4
> .type pr22217_foo, @object
> .size pr22217_foo, 4
> pr22217_foo:
>
> I am testing with gcc 4.9.2.

gcc SVN from ~6 months ago ("GCC: (GNU) 4.10.0 20140708
(experimental)") produces:

        .comm   pr22217_foo,4,4

in C, and

        .globl  pr22217_foo
        .bss
        .align 4
        .type   pr22217_foo, @object
        .size   pr22217_foo, 4
pr22217_foo:
        .zero   4

in C++.