Re: [Jack-Devel] [LAU] jack2 turned verbose

On Sat, Jun 02, 2012 at 09:16:57AM +0200, Robin Gareus wrote:
 
> Well, depending what the compiler does, maybe add some explicit
> type-casts:  X.b == false  vs.  ((bool) X.b) == false.

That doesn't make much sense, X.b  *is*  already a bool.

Here is a third version:

    for (i = 0; i < 5; i++)
    {
        X.i = i;
        if      ((int) X.b == 1)  puts ("true");
        else if ((int) X.b == 0)  puts ("false");
        else                      puts ("Neither true or false");
    }

which produces the same output as the two others.

So  (int) X.b  is *not* the same as  X.i. 

What this tells me is that one should test booleans against
boolean constants, and ints against int constants, and *not*
mix them up. Which I guess the libdbus code is doing.

 
> Is this Arch-Linux, gcc/g++-4.7.0, with "-O2" ?

4.7.0 with -O3. 

> The flags to produce the problem with: g++ 4.7.0 are
> CXXFLAGS="-march=i686 -mtune=generic -O2 -pipe -fstack-protector
> --param=ssp-buffer-size=4 -D_FORTIFY_SOURCE=2"

Tried this, same result for all three tests.

Ciao,

-- 
FA

A world of exhaustive, reliable metadata would be an utopia.
It's also a pipe-dream, founded on self-delusion, nerd hubris
and hysterically inflated market opportunities. (Cory Doctorow)

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