[Bug c++/50611] Error reporting routines re-entered

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50611

--- Comment #6 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-10-11 11:40:38 UTC ---
I mean, fixes the ICE both in mainline and in 4_6-branch. Indeed, the latter
seems more serious, because otherwise for the original testcase we produce no
useful diagnostics at all.