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Re: bug in libstdc++ bitset


After changing it to let it compile under 3.x,
#include <bitset>
#include <iostream>
using namespace std;

int main() {
        bitset <33> b;
        b.set(32);
        cout << b << ' ' << b.count() << ' ' << b.none() << '\n';
}

With the current cvs, it compiles fine and outputs:
100000000000000000000000000000000 1 0

which looks to be the right answer.

Thanks,
Andrew Pinski

On Monday, August 19, 2002, at 09:05 , Ed Parcell wrote:

Hi,

Sorry that this is almost definitely the wrong place to send this to.
Anyway, here goes. bitset::none() and bitset::any() appear to only look
at the first word. Here is example code to exhibit this:

#include <bitset>
#include <iostream>

void main() {
        bitset <33> b;
        b.set(32);
        cout << b << ' ' << b.count() << ' ' << b.none() << '\n';
}

I am using libstdc++ in the debian package libstdc++2.10, which has the
description "This is not a final release, but taken from the CVS
gcc-2_95-branch
 (dated 2001-10-02)". This bug also occurs on libstdc++3-3.0.1-3 I
believe.

Thanks,
        Ed.










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