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From: . . <apatiskogen@yandex.com>
To: zsh-workers@zsh.org
Subject: broken random variable
Date: Sat, 19 Oct 2019 00:38:51 -0500	[thread overview]
Message-ID: <8724321571463531@myt3-a2a42ac8caa6.qloud-c.yandex.net> (raw)

Hello, zsh-workers

I found a bug in the $RANDOM variable; on OpenBSD, the command "echo $RANDOM | tee" will print the same number
across different executions of the same command, and the value of "echo $RANDOM" will be the same as the last value.
At first I thought that this bug was limited to OpenBSD, because it was not reproduced on the website "rootnroll" which has
a demo for "oh my zsh", but today I tested another command on the website:  "yes | while read; do echo $RANDOM; done | head",
and all the random numbers are the same across different executions of the command. I hope that's enough information for you.
I reported the first bug to OpenBSD on monday, and Theo de Raadt replied and said that I should tell you instead.
I guess this  e-mail might be a bit late, but I was waiting for evidence that it can be reproduced elsewhere.

PS: I would recommend using "arc4random" on OpenBSD if that is at all possible.

Thanks for reading my message. Good day.


             reply	other threads:[~2019-10-19  5:39 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-19  5:38  [this message]
2019-10-19  5:44 ` Roman Perepelitsa
2019-10-19  6:09   ` Daniel Shahaf
2019-10-19  9:48 ` Sebastian Gniazdowski
2019-10-19 14:31 ` Mikael Magnusson

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