This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: [stdc++] Mark global new/delete operators as weak symbols


Ping

2013/8/20 Romain Geissler <romain.geissler@gmail.com>:
> Hi,
>
> According to the C++ standard §17.4.3.4(2,3) the global new and delete
> operator implementation can be replaced by the program. For example,
> tcmalloc does redefine them. On ELF targets, it is currently OK if you
> link libstc++ dynamically. However, if you try to link both tcmalloc
> and stdc++ statically, then the linker will complain about multiple
> symbol definition.
>
> This patch fixes this by marking the global new/delete operator as
> weaks for linux. I may be extended to all ELF targets. Bootstrapped
> and tested on SLES 11 SP1 x86_64.
>
> Cheers,
> Romain
>
> /libstc++-v3/
>
> 2013-08-20  Romain Geissler  <romain.geissler@gmail.com>
>
>     * config/os/gnu-linux/os_defines.h: (_GLIBCXX_WEAK_DEFINITION): Define.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]