Date: Sun, 10 Apr 2005 11:24:17 +0200 From: Ulrich Spoerlein <q@uni.de> To: takawata@jp.freebsd.org Cc: freebsd-current@freebsd.org Subject: Re: smbfs bug introduced at smbfs_vnops.c:1.58 Message-ID: <20050410092417.GA774@galgenberg.net> In-Reply-To: <200504100251.j3A2pLEH055107@sana.init-main.com> References: <200504100251.j3A2pLEH055107@sana.init-main.com>
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On Sun, 10.04.2005 at 11:51:21 +0900, takawata@jp.freebsd.org wrote:
> This is caused by uninitialized vp.
The compiler should warn about this. But something fishy is going on ...
foo.c:
int main(void) {
int a;
a+=3D1;
return (0);
}
% gcc -O -W -Wall -Wuninitialized -Winit-self foo.c
% icc -Wbrief -Wall foo.c
foo.c(3): remark #592: variable "a" is used before its value is set
% tdfc2 -Wall foo.c >/dev/null
"foo.c", line 2: Warning:
[ISO C90 6.6.2]: Variable 'a' may be used without being set.
"foo.c", line 4: Warning:
[ISO C90 6.6.2]: Variable 'a' not used since previous assignment.
% lint -i foo.c
foo.c(3): warning: a may be used before set [158]
% splint foo.c
foo.c: (in function main)
foo.c:3:3: Variable a used before definition
Any magical flags for gcc I'm missing?
Ulrich Sp=F6rlein
--=20
PGP Key ID: F0DB9F44 Encrypted mail welcome!
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Ok, which part of "Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn."
didn't you understand?
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