Re: Problem with weak_alias and strong_alias in gcc-4.1.0 with MIPS...

["Giovanni Bajo" <giovannibajo at libero dot it>]

Steven J. Hill <sjhill@realitydiluted.com> wrote:

>     ../sysdeps/ieee754/dbl-64/s_isinf.c:29: error: 'isinf' aliased to
> undefined symbol '__isinf'
>     ../sysdeps/ieee754/dbl-64/s_isinf.c:31: error: '__isinfl' aliased
> to undefined symbol '__isinf'
>     ../sysdeps/ieee754/dbl-64/s_isinf.c:32: error: 'isinfl' aliased to
> undefined symbol '__isinf'
>
> I am attempting to try and figure out what changed so drastically to
> cause this. I also looked in GCC and glibc Bugzilla databases, but did
> not find anything addressing this problem. Has anyone seen this
> behavior? Thanks.

http://gcc.gnu.org/gcc-4.0/changes.html

Quote:
Given __attribute__((alias("target"))) it is now an error if target is not a
symbol, defined in the same translation unit. This also applies to aliases
created by #pragma weak alias=target. This is because it's meaningless to
define an alias to an undefined symbol. On Solaris, the native assembler would
have caught this error, but GNU as does not.

Giovanni Bajo