Re: Satellite-killing software

Subject: Re: Satellite-killing software
From: "Peter Neilson" <neilson -at- windstream -dot- net>
To: techwr-l -at- lists -dot- techwr-l -dot- com
Date: Thu, 05 May 2016 09:28:44 -0400

On Thu, 05 May 2016 00:34:59 -0400, Keith Hood <bus -dot- write -at- gmail -dot- com> wrote:

It's not Friday yet but what the heck . . . I saw a story about that
Japanese satellite that failed in flight, on a site called it malfunctioned after a software update went awry.
I'm offering 5 to 2 they didn't bother to comment the code. Any takers?

I think they commented the code and then wrote more code based upon reading the comments instead of the code. Only certain of the comments in code are good enough to instill caution and perhaps inspire a search for deeper understanding. My favorite one of those is this:

* Switch to stack of the new process and set up
* his segmentation registers.
* If the new process paused because it was
* swapped out, set the stack level to the last call
* to savu(u_ssav). This means that the return
* which is executed immediately after the call to aretu
* actually returns from the last routine which did
* the savu.
* You are not expected to understand this.
if(rp->p_flag&SSWAP) {
rp->p_flag =& ~SSWAP;
* The value returned here has many subtle implications.
* See the newproc comments.

See for Dennis Ritchie's explanation.

Here's a picture of Dennis with friends:
Visit TechWhirl for the latest on content technology, content strategy and content development |


You are currently subscribed to TECHWR-L as archive -at- web -dot- techwr-l -dot- com -dot-
To unsubscribe send a blank email to
techwr-l-leave -at- lists -dot- techwr-l -dot- com

Send administrative questions to admin -at- techwr-l -dot- com -dot- Visit for more resources and info.

Looking for articles on Technical Communications? Head over to our online magazine at

Looking for the archived Techwr-l email discussions? Search our public email archives @


Satellite-killing software: From: Keith Hood

Previous by Author: Flare-only shop?
Next by Author: Re: Help with a survey
Previous by Thread: Re: Satellite-killing software
Next by Thread: Re: Satellite-killing software

What this post helpful? Share it with friends and colleagues:

Sponsored Ads