Messages in this thread | | | From | Uwe Kleine-König <> | Subject | Re: [PATCH v2] vsprintf: introduce %dE for error constants | Date | Thu, 29 Aug 2019 19:39:45 +0200 |
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On 8/29/19 11:09 AM, Rasmus Villemoes wrote: > On 29/08/2019 10.27, Juergen Gross wrote: >> On 29.08.19 10:12, Petr Mladek wrote: >>> On Wed 2019-08-28 21:18:37, Uwe Kleine-König wrote: >>>> >>>> I'd like to postpone the discussion about "how" until we agreed about >>>> the "if at all". >>> >>> It seems that all people like this feature. >> >> Hmm, what about already existing format strings conatining "%dE"? >> >> Yes, I could find only one (drivers/staging/speakup/speakup_bns.c), but >> nevertheless... > > Indeed, Uwe still needs to respond to how he wants to handle that. I
This is indeed bad and I didn't expect that. I just took a quick look and this string is indeed used as sprintf format string.
> still prefer making it %pE, both because it's easier to convert integers > to ERR_PTRs than having to worry about the type of PTR_ERR() being long > and not int, and because alphanumerics after %p have been ignored for a > long time (10 years?) whether or not those characters have been > recognized as a %p extension, so nobody relies on %pE putting an E after > the %p output. It also keeps the non-standard extensions in the same > "namespace", so to speak. > > Oh, 'E' is taken, well, make it 'e' then.
I like having %pe to print error valued pointers. Then maybe we could have both %de for ints and %pe for pointers. :-)
Best regards Uwe
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