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From: Yoann Padioleau <padator@wanadoo.fr>
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Date: Fri, 23 Sep 2011 14:32:15 -0700
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Subject: [Caml-list] waitpid exception under ocamldebug

Hi,

When using ocamldebug (under emacs), I get the following exception:

set print_depth 3000
set print_length 300000
break @ main_scheck 225
run
	Objective Caml Debugger version 3.12.1

(ocd) (ocd) (ocd) Loading program... done.
Breakpoint 1 at 1138256 : file main_scheck.ml, line 225, characters 7-49

(ocd) exn Unix_error: No child processes waitpid 

Time : 141529
Program end.
Uncaught exception: Unix.Unix_error (5, "waitpid", "")


Now if I breakpoint before in the file, and manually do 'next', then there is no problem.

Any idea?