[lkml]   [2000]   [Nov]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [PATCH] removal of "static foo = 0"
    John Alvord wrote:
    > On Sun, 26 Nov 2000 04:25:05 +0000 (GMT), Alan Cox
    > <> wrote:
    > >> AB> of changes that yield a negligable advantage and reduce stability
    > >> AB> a tiny little bit. That is pushing Linux in the direction of this
    > >> AB> abyss. You notice that the view gets better, and I get nervous.
    > >>
    > >> Can somebody stop this train load of bunk?
    > >>
    > >> Uninitialized global variables always have a initial value of
    > >> zero. Static or otherwise. Period.
    > >
    > >That isnt what Andries is arguing about. Read harder. Its semantic differences
    > >rather than code differences.
    > >
    > > static int a=0;
    > >
    > >says 'I thought about this. I want it to start at zero. I've written it this
    > >way to remind of the fact'
    > >
    > >Sure it generates the same code
    > It also says "I do not know much about the details of the kernel C
    > environment. In particular I do not know that all static variables are
    > initialized to 0 in the kernel startup. I have not read setup.S."

    Nope. It doesn't say that. Maybe if you wrote the code. But if Andries
    or I had written that line, it just says that when written the
    programmer thought about the initial value, and that the initial value
    matters on this variable.

    It is a concise form of documentation. As Andries explained, this can
    also be done with comments or with

    static int a /* = 0 */;

    However, I like the "=0" variant much better.

    If you're worried about the inefficiency of the compiler, take it up
    with the compiler guys. Or write an extra preprocessor step or
    something like that.


    ** ** ** +31-15-2137555 **
    *-- BitWizard writes Linux device drivers for any device you may have! --*
    * There are old pilots, and there are bold pilots.
    * There are also old, bald pilots.
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    Please read the FAQ at

     \ /
      Last update: 2005-03-22 12:47    [W:0.021 / U:14.932 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site