Bug with PROCINFO["identifiers"]

[anoncoward]

If one has a user defined variable (scalar or array), 
PROCINFO["identifiers"] always returns ``untyped'' 
even if the type is known.

(Hushmail will wrap the lines.  My apologies.)

$ LC_ALL=C ./gawk 'BEGIN {s="a"; i=1; ar[1]=3; print 
PROCINFO["identifiers"]["s"], PROCINFO["identifiers"]["i"],  
PROCINFO["identifiers"]["ar"] }'
untyped untyped untyped

but the program obviously knows that s and i are scalars and ar is 
an array.  For example,

$ LC_ALL=C ./gawk 'BEGIN {s="a"; i=1; ar[1]=3; print typeof(s), 
typeof(i),  typeof(ar) }'
string number array

Per your request, I compiled the latest version of gawk and tested 
it.

./gawk -V
GNU Awk 5.1.0, API: 3.0
Copyright (C) 1989, 1991-2020 Free Software Foundation.

This program is free software; you can redistribute it and/or 
modify
it under the terms of the GNU General Public License as published 
by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program. If not, see http://www.gnu.org/licenses/.

Thanks