Date: Tue, 7 Nov 2000 21:23:59 -0500 (EST) From: "Albert D. Cahalan" <acahalan@cs.uml.edu> To: hackers@FreeBSD.ORG, roam@orbitel.bg, keramida@ceid.upatras.gr Subject: Re: umask(2) and -Wconversion Message-ID: <200011080223.eA82Nxf392522@saturn.cs.uml.edu>
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Peter Pentchev writes:
> As you can see, I'm passing a short i as a first arg, a short f
> as second, and a short b as third; and yet, gcc with BDECFLAGS
> complains about ALL the arguments!
Yes, no kidding. That's what you asked gcc to do.
`-Wconversion'
Warn if a prototype causes a type conversion that is different
from what would happen to the same argument in the absence of a
prototype. This includes conversions of fixed point to floating
and vice versa, and conversions changing the width or signedness
of a fixed point argument except when the same as the default
promotion.
The C language is crufty. In the absense of a prototype, "short" is
promoted to "int". You wanted to be warned about that; you got it!
To avoid the warning, avoid passing anything but "int" and "double".
Maybe "long" is OK too, I forget.
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