From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <ee9e417a0504041110596cc301@mail.gmail.com>
Date: Mon,  4 Apr 2005 14:10:20 -0400
From: Russ Cox <russcox@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Subject: Re: [9fans] 'non-interruptable temporary' warning
In-Reply-To: <Pine.LNX.4.60.0504041250180.17506@athena>
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the compiler is warning you against its own laziness.
in this case it is using a global temporary to hold the
intermediate value of (lba = f->lba) while converting
it to uchar.  if you had another thread running through
this code it would use the same temporary.

use 

lba = f->lba;
ah->lba0 = lba;

russ