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    SubjectRe: fork() Problem?
    On May 05, Richard B. Johnson wrote:

    > On Wed, 5 May 1999, Manuel A. McLure wrote:
    >
    > > This is *not* a bug. lint is WARNING you (caps mine) that this may have
    > > different results than expect. But the functionality behind the expression
    > > is a C design feature that has been there since day one. Any compiler that
    > > DOES execute the inside of the if() statement in the code you present would
    > > be buggy.
    > >
    > > --
    > > Manuel A. McLure KE6TAW <mmt@unify.com>
    >
    > Lint _clearly_ states that it's an error.

    congratulation, you found a bug in lint;)

    or just think that it's an `error' in lint's mind to write such ugly code
    (which looks like Pascal code;) -- but lint's mind and lint itself isn't part
    of the C language standard.


    > That said, the problem with:
    >
    > if(a=b)
    >
    > is that the value of a is not tested. 'a' got assigned the value of
    > 'b', but only the assignment was tested, not the resulting value.

    can you please explain what `assignment was tested' means in C language ?
    and an you please show where K&R or ANSI C explain what it means that
    an `assignment (does not) succeed' and how this ever shall happen ?

    does this test check if the value already was stored ?
    was stored in main memory? stored in L2 cache? in L1 cache?
    in a register variable ?!

    and how ever should such a test, if a value got stored, fail in C ?
    do you expect to read back memory (register, cache, ...) and compare
    it with the original value to be stored ?!


    Harald
    --
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    Harald Koenig, \/\/\/\/\/\/\/\/\/
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    koenig@tat.physik.uni-tuebingen.de ^^^^^ ^^^^^

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