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    SubjectRe: RFC: booleans and the kernel
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    le ven 25-01-2002 à 23:47, Timothy Covell a écrit :
    > On Thursday 24 January 2002 16:33, Xavier Bestel wrote:
    > > le ven 25-01-2002 à 22:24, Timothy Covell a écrit :
    > > > On Thursday 24 January 2002 14:39, Oliver Xymoron wrote:
    > > > > The compiler _will_ turn if(a==0) into a test of a with itself rather
    > > > > than a comparison against a constant. Since PDP days, no doubt.
    > > >
    > > > I thought that the whole point of booleans was to stop silly errors
    > > > like
    > > >
    > > > if ( x = 1 )
    > > > {
    > > > printf ("\nX is true\n");
    > > > }
    > > > else
    > > > {
    > > > // we never get here...
    > > > }
    > >
    > > gcc already warns you about such errors.
    > >
    > > Xav
    >
    > That's funny, I compiled it with "gcc -Wall foo.c" and got no
    > warnings. Please show me what I'm doing wrong and how
    > it's _my_ mistake and not the compilers.

    [xav@bip:~]$ gcc -Wall a.c
    a.c: In function `main':
    a.c:8: warning: suggest parentheses around assignment used as truth value

    Xav

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