Set image pixels individually on 32-bit Windows

[radarhere]

The 32-bit Windows job has starting failing in main - https://github.com/python-pillow/Pillow/actions/runs/23538684238/job/68520371256#step:30:2212

        im.paste(fill_color, (-10, -10, 110, 110))
>       assert im.getbbox() == (0, 0, 100, 100)
E       assert None == (0, 0, 100, 100)
E        +  where None = getbbox()
E        +    where getbbox = <PIL.Image.Image image mode=RGB size=100x100 at 0x1320CB20>.getbbox

[hugovk]

Any idea why this has suddenly started failing? Some version change on the CI?

[radarhere]

It started failing when we switched from windows-2022 20260301.50.1 runner image to 20260317.73.1.

[hugovk]

It's failing on x86 for windows-2022 and windows-2025 (aka windows-latest) but passing on windows-2025-vs2026.

• https://github.com/hugovk/Pillow/actions/runs/23592903266/job/68702293154

Runner details at https://github.com/actions/runner-images#available-images

It feels a bit like a compiler bug...

Anyway, I don't think we have anyone to dig deeper into this, so let's merge to fix the CI. And maybe we'll re-drop 32-bit Windows one of these days.

Thanks!