From: Rasmus Villemoes > Sent: 12 June 2023 12:08 > > On 10/06/2023 22.40, Demi Marie Obenour wrote: > > Passing spaces before e.g. an integer is usually > > not intended. > > Maybe, maybe not. But it's mandated by POSIX/C99. > > And of course we are free to ignore that and implement our own semantics > (though within the constraints that we really want -Wformat to help us), > but there seems to be existing code in-tree that relies on this > behavior. For example I think this will break > fsl_sata_intr_coalescing_store() which uses a scanf format of "%u%u". > > Sure, that could just say "%u %u" instead, but the point is that > currently it doesn't. So without some reasonably thorough analysis > across the tree, and updates of affected callers, NAK. It would almost certainly need to be " %u %u" to allow for userspace generating the input with "%6u %6u", David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)
