c++/10603: [3.4 regression] [new parser] failing to print problematic token upon parse error

[Giovanni Bajo]

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=10603

Let me add that this is not restricted to this very specific case. The new
parser surely needs work in error reporting, because I could post endless
regressions I found on this regard.

Giovanni Bajo