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
Date: Mon, 4 Apr 2005 14:10:20 -0400 [thread overview]
Message-ID: <ee9e417a0504041110596cc301@mail.gmail.com> (raw)
In-Reply-To: <Pine.LNX.4.60.0504041250180.17506@athena>
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
prev parent reply other threads:[~2005-04-04 18:10 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-04 17:58 Sam
2005-04-04 18:10 ` Russ Cox [this message]
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