Re: [PATCH] coreutils/printf: fix errno clobbering with glibc 2.43

On 17/03/2026 10:30, Rasmus Villemoes wrote:
> On Tue, Mar 17 2026, Harald van Dijk via busybox <[email protected]> wrote:
> 
>> On 16/03/2026 14:23, David Laight via busybox wrote:
>>> On Mon, 16 Mar 2026 12:40:59 +0530
>>> Hemanth Kumar M D via busybox <[email protected]> wrote:
>>>
>>>>   busybox printf uses errno as an accumulator and returns exit code 1
>>>> if errno is non-zero.
> 
>      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>              This is the bug in busybox that should be fixed.

busybox's design here is unconventional but it's been done that way for 
a long time, and the patch correctly fixes things in line with the 
current design. If you want to submit a different patch instead that 
goes against the current design to do things more conventionally, go for 
it, but I suspect that will end up being a bigger and riskier change.

Cheers,
Harald van Dijk