Re: http://gcc.gnu.org/ml/gcc-bugs/2012-09/msg02363.html
Hi, the gcc-bugs list is for automated mails from the GCC Bugzilla database. Please use Bugzilla to report bugs, rather than mailing the list directly, this ensures the mail will be read and the issue can be tracked correctly. The issue you report is already known, you can see it at http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50461 -- to build released versions of GCC without changing the sources you need to use an older version of MPFR.