From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <5a41b36e913f59de1dd89b542c8d9a55@plan9.bell-labs.com>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] Booting on slow CPUs
From: "Russ Cox" <rsc@plan9.bell-labs.com>
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Date: Fri, 15 Mar 2002 15:07:49 -0500
Topicbox-Message-UUID: 682d8cc4-eaca-11e9-9e20-41e7f4b1d025

You need to poperror() on the path where there's no error, thus:

	if(waserror()){
		/* no poperror on this path ... */
		return nil;
	}
	poperror();

but

	if(!waserror()){
		/* do some stuff... */
		poperror();
	}
	/* more stuff */

The second is idiomatic for ``do some stuff, stopping early
if you encounter an error; either way, then do more stuff.''

Russ