other/2719: demangler crash

[tromey@redhat.com]

>Number:         2719
>Category:       other
>Synopsis:       demangler crash
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed May 02 14:46:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Tom Tromey
>Release:        unknown-1.0
>Organization:
>Environment:
x86 Red Hat Linux 6.2
>Description:
I'm using the current gcc 3.0 branch.

This crashes the demangler:

./c++filt _Utf58_0_1__1_2147483647__2147483648
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: