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    SubjectRe: [2.6 patch] drivers/net/smc-mca.c: cleanups
    Arjan van de Ven <> wrote:
    >> I've used this technique in a few very
    >> small programs to reduce their size (I could strip off both their bss and
    >> data sections to save space). Also, I believe that the compiler is able
    >> to optimize code using consts, but this is pure speculation, I've not
    >> verified it.
    > Afaik that's the main difference between C and C++; in C you can still
    > change "const" variables... in C++ thats illegal (at least that's what I
    > remember and google seems to support somewhat ;)

    The compiler does use the const modifier on a static object to optimise
    code. Try compiling this program:

    const int x;

    int bar(int);

    int foo(void)
    return bar(x);

    With the const gcc (3.3.4) will only load x once while it'll reload
    it after calling bar if you remove the const modifier.
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      Last update: 2005-03-22 14:10    [W:0.020 / U:14.968 seconds]
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