[PATCH] kbuild: treat char as always unsigned

[Sascha Hauer]

On Tue, Apr 22, 2025 at 09:52:06AM +0200, Ahmad Fatoum wrote:
> Hello Sascha,
> 
> On 22.04.25 09:42, Sascha Hauer wrote:
> > 
> > On Tue, 22 Apr 2025 08:39:10 +0200, Ahmad Fatoum wrote:
> >> The C standard makes it implementation defined whether a plain char is
> >> unsigned or signed and the architectures where barebox is compiled for
> >> differ in that, e.g. chars are traditionally unsigned on ARM, but on x86
> >> for example they tend to be signed.
> >>
> >> This caused different bugs[1][2][3] in the past, especially around
> >> behavior when casted to int. Let's instruct the compiler to treat char
> >> as always unsigned. This may fix some issues that flew under the radar
> >> so far, but also break drivers that were compiled and used only for
> >> specific architectures, which implicitly assumed char is signed, which
> >> we'll have to fix.
> >>
> >> [...]
> > 
> > Applied, thanks!
> 
> Please wait with this until after the release, so it sits in next for
> a whole month first.

Ok, dropped for now. Please ping me after the release in case I forget.

Sascha

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