end(3) [bsd man page]

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)

end(3C) 						   Standard C Library Functions 						   end(3C)

NAME

       end, _end, etext, _etext, edata, _edata - last locations in program

SYNOPSIS

       extern int _etext;

       extern int _edata;

       extern int _end;

DESCRIPTION

       These names refer neither to routines nor to locations with interesting contents; only their addresses are meaningful.

       _etext	       The address of _etext is the first location after the program text.

       _edata	       The address of _edata is the first location after the initialized data region.

       _end	       The address of _end is the first location after the uninitialized data region.

USAGE

       When  execution	begins,  the program break (the first location beyond the data) coincides with _end, but the program break may be reset by
       the  brk(2), malloc(3C), and the standard input/output library (see stdio(3C)), functions by the profile (-p) option of	cc(1B), and so on.
       Thus, the current value of the program break should be determined by sbrk ((char *)0).

       References  to  end,  etext, and edata, without a preceding underscore will be aliased to the associated symbol that begins with the under-
       score.

SEE ALSO

       cc(1B), brk(2), malloc(3C), stdio(3C)

SunOS 5.10							    1 Sep 2003								   end(3C)