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From: Ed Schouten <ed@nuxi.nl>
To: musl@lists.openwall.com
Subject: a64l(): return value should be sign extended
Date: Mon, 23 May 2016 20:01:24 +0200	[thread overview]
Message-ID: <CABh_MKkNiTPC+mevnyLa1vNH2LnpyCOOT-=Ko+ZBUYTR06zZSg@mail.gmail.com> (raw)

Hi there,

While reading some of musl's sources, I think I might have found a
tiny bug, though I haven't tested the code myself.

The 'x' variable in the a64l() function has type uint32_t, meaning
that the function computes a value between [0,2^32). According to
POSIX, the return value of this function should be sign extended --
not zero extended -- in case long is larger than 32 bits. This means
that the return statement in this function should either cast x to an
int32_t, or the declaration of x should be changed to an int32_t.

Best regards,
-- 
Ed Schouten <ed@nuxi.nl>
Nuxi, 's-Hertogenbosch, the Netherlands
KvK-nr.: 62051717


             reply	other threads:[~2016-05-23 18:01 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-05-23 18:01 Ed Schouten [this message]
2016-05-23 22:30 ` Rich Felker

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