[Bug c++/23056] New: [4.0/4.1 regression] ICE in write_template_arg_literal, at cp/mangle.c

["dank at kegel dot com" <gcc-bugzilla at gcc dot gnu dot org>]

We get an ICE building a real C++ app.
Thanks to mec for the minimized testcase, which I will attach.
Building it with gcc-4.0.1 and last week's gcc-4.1 snapshot
produces the errors shown below.

gcc-4.0.1: 
i686-unknown-linux-gnu-g++ -c b2.cc
b2.cc: In instantiation of 'Beta<true, void, Delta, int>':
b2.cc:40:   instantiated from here
b2.cc:8: internal compiler error: in write_template_arg_literal, at cp/mangle.c:2203

gcc-4.1-20050716:
i686-unknown-linux-gnu-g++ -c b2.cc
b2.cc: In instantiation of 'Beta<true, void, Delta, int>':
b2.cc:40:   instantiated from here
b2.cc:8: internal compiler error: in write_template_arg_literal, at cp/mangle.c:2228

-- 
           Summary: [4.0/4.1 regression] ICE in write_template_arg_literal,
                    at cp/mangle.c
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dank at kegel dot com
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23056