Newsgroups: comp.lang.c
Path: utzoo!henry
From: henry@utzoo.uucp (Henry Spencer)
Subject: Re: Help wanted: Data segment layout
Message-ID: <1990Mar18.034812.16776@utzoo.uucp>
Organization: U of Toronto Zoology
References: <3300001@uicsgva.csg.uiuc.edu>
Date: Sun, 18 Mar 90 03:48:12 GMT

In article <3300001@uicsgva.csg.uiuc.edu> long@uicsgva.csg.uiuc.edu writes:
>I would like to know the data segment layout of a C program
>on Unix (Sun OS). For the following example, I found some extra 
>variables were inserted before the first global variables ...
>Now my questions are: does anyone know what they are? 
>Does they vary from program to program?

They probably include things like string constants, tables the compiler
generates for switch statements, variables used by run-time startup
machinery, etc.  There is potentially quite a bit going on below the
surface, varying from program to program, compiler to compiler, and
release to release.
-- 
MSDOS, abbrev:  Maybe SomeDay |     Henry Spencer at U of Toronto Zoology
an Operating System.          | uunet!attcan!utzoo!henry henry@zoo.toronto.edu