Re: [Bug 1881004] [NEW] fpu/softfloat.c: error: bitwise negation of a boolean expression

[Peter Maydell]

On Wed, 27 May 2020 at 20:21, Philippe Mathieu-Daudé
<1881004@bugs.launchpad.net> wrote:
>
> Public bug reported:
>
> Last time I built QEMU was on commit d5c75ec500d96f1d93447f990cd5a4ef5ba27fae,
> I just pulled to fea8f3ed739536fca027cf56af7f5576f37ef9cd and now get:
>
>   CC      lm32-softmmu/fpu/softfloat.o
> fpu/softfloat.c:3365:13: error: bitwise negation of a boolean expression; did 
> you mean logical negation? [-Werror,-Wbool-operation]
>     absZ &= ~ ( ( ( roundBits ^ 0x40 ) == 0 ) & roundNearestEven );
>             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>             !


"(x & y)" is not a boolean expression, so we should report this to clang
as a bug (I assume what they actually are trying to complain about is
bitwise AND with a boolean expression).

thanks
-- PMM