zero?

guthery@cs.utexas.edu (Scott Guthery) (04/22/89)

If I set the stacksize limit to anything other than its default value,
"limit stacksize 500k" for example, and then run a program which exits
normally and then do anything ("ls" or "pwd", for example) I get the
message

	ld.so: map heap error (22) for /dev/zero

and I have to kill the process since that's all it will do.

We're talking 4.0.1 on a Sun-4.  Any ideas?

						Thanks, Scott

jdh@bu-it.bu.edu (Jason Heirtzler) (05/07/89)

>If I set the stacksize limit to anything other than its default value,
>"limit stacksize 500k" for example, and then run a program which exits
>normally and then do anything ("ls" or "pwd", for example) I get the
>message
>
>        ld.so: map heap error (22) for /dev/zero

Yes, apparently because of some bug, if it's dynamically linked it must be
page-aligned. It's Sun bug ref # 1012204

	% limit stack 500k
	% ls
	ld.so: map heap error (22) for /dev/zero
	% pagesize
	8192
	% limit stack 512k
	% ls
	foo	bar

---Jason Heirtzler
   Boston University