Xref: utzoo comp.mail.sendmail:3323 alt.sys.sun:4119
Newsgroups: comp.mail.sendmail,alt.sys.sun
Path: utzoo!utgpu!watserv1!watmath!gamiddle
From: gamiddle@watmath.waterloo.edu (Guy Middleton)
Subject: sendmail frozen config and Sun shared libraries
Message-ID: <1991Jun4.173143.29157@watmath.waterloo.edu>
Organization: Yoyodyne Propulsion Systems
Date: Tue, 4 Jun 1991 17:31:43 GMT
Lines: 27

I just installed a new sendmail (5.65+IDA from DECWRL), and encountered the
strangest bug.

On a Sun, SunOS 4.1:

% sendmail -bz			# create frozen config file
% unlimit stacksize
% mail somebody@some.where.edu
% Who are you?			# getpwuid(getuid()) in conf.c fails

even better:
% unlimit stacksize
% sendmail -bz
% limit stacksize 8192
% mail somebody@some.where.edu
/usr/lib/sendmail: 8164 Memory fault
%

All of this works fine on other systems, and on a Sun if I compile without
shared libraries (using cc -Bstatic).  There is obviously some trick to
saving the data segment of a dynamically-linked program (as is done by
sendmail -bz).  Does anybody know what it is?

 -Guy Middleton, University of Waterloo		gamiddleton@watmath.waterloo.edu
		(+1 519 885 1211 x3472)		gamiddleton@watmath.uwaterloo.ca