[v3] Remove duplicate symbol in gnu.ver (PR bootstrap/50715)

[Paolo Carlini]

On 10/17/2011 05:00 PM, Rainer Orth wrote:
> As described in the PR, after Benjamin's patch
>
> 2011-10-10  Benjamin Kosnik<bkoz@redhat.com>
>
>          PR libstdc++/49818
>          * config/abi/pre/gnu.ver (CXXABI_1.3.6): Add symbols.
>
> __cxa_get_exception_ptr is now present in both CXXABI_1.3.1 and
> CXXABI_1.3.6, which breaks Solaris bootstrap with Sun ld:
>
> ld: fatal: libstdc++-symbols.ver-sun: 5210: symbol '__cxa_get_exception_ptr' is already defined in file: libstdc++-symbols.ver-sun: symbol version conflict
>
> The duplicate serves no purpose I can see, and even with both entries,
> __cxa_get_exception_ptr is bound to version CXXABI_1.3.1 only on
> x86_64-unknown-linux-gnu, so it seems safe to remove.
>
> This restores Solaris bootstrap, tested on i386-pc-solaris2.11.
>
> Ok for mainline?
Ok, thanks.

Paolo.