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From: fdot@sphinx.uchicago.edu (Tom Lippincott)
Newsgroups: comp.sys.mac
Subject: A Trivial Suggestion
Message-ID: <1968@sphinx.uchicago.edu>
Date: Thu, 11-Jun-87 22:33:34 EDT
Article-I.D.: sphinx.1968
Posted: Thu Jun 11 22:33:34 1987
Date-Received: Sat, 20-Jun-87 12:53:42 EDT
References: <869@apple.UUCP> <1499@midas.TEK.COM> <981@apple.UUCP>
Reply-To: fdot@sphinx.UUCP (Tom Lippincott)
Organization: U Chicago Computation Center
Lines: 16


     I was trying to make my program hold up under out-of-memory errors,
and found a minor problem with the control manager, which perhaps
could be fixed in the next ROMs.  When I run flat out of memory,
my heap expansion procedure ends up doing a longjmp back to the main
event loop.  If this happens while creating a control, it leaves
the control in the window's control list, but without the proper refcon,
wreaking havoc with the program.
	It seems to me that the control shouldn't be installed until
the control record is finished, to avoid this and similar problems.

					--Tom Lippincott
					..ihnp4!gargoyle!sphinx!fdot

"Just a moment....  Just a moment....  I'm picking up a fault in the AE-35
subunit.  It will go one hundred percent failure within seventy-two hours."