bsd man page for end

END(3)							     Library Functions Manual							    END(3)

NAME
       end, etext, edata - last locations in program

SYNOPSIS
       extern end;
       extern etext;
       extern edata;

DESCRIPTION
       These names refer neither to routines nor to locations with interesting contents.  The address of etext is the first address above the pro-
       gram text, edata above the initialized data region, and end above the uninitialized data region.

       When execution begins, the program break coincides with end, but it is reset by	the  routines  brk(2),	malloc(3),  standard  input/output
       (stdio(3S)), the profile (-p) option of cc(1), etc.  The current value of the program break is reliably returned by `sbrk(0)', see brk(2).

SEE ALSO
       brk(2), malloc(3)

7th Edition							   May 12, 1986 							    END(3)