MFC r260332;
gcc: backport some fixes from llvm-gcc
llvm-gcc backported some patches from gcc trunk:
http://gcc.gnu.org/ml/gcc-cvs/2007-05/msg00662.html
http://gcc.gnu.org/ml/gcc-cvs/2007-07/msg00019.html
http://gcc.gnu.org/ml/gcc-cvs/2007-08/msg00240.html
http://gcc.gnu.org/ml/gcc-cvs/2007-08/msg00493.html
The first two were always GPL2. The last two were
added after the GPL3 transition, but were written
by aaw@google.com and Rafael EspĂndola got permission
to relicense them under the GPL2 for inclusion in
llvm-gcc.
This fixes GCC-PR c++/31749
Obtained from: llvm-gcc (rev. 75463; GPLv2)
git-svn-id: svn://svn.freebsd.org/base/stable/10@260932
ccf9f872-aa2e-dd11-9fc8-
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