On Fri, May 02, 2003 at 11:06:32AM +0200, Bodo Rzany wrote:
> PROBLEM:
> Hex/Octal decoding with sscanf from kernel library does not work
> within kernel 2.4.20
>
> DESCRIPTION:
> Line 570 in lib/vsprintf.c
>
> 14677 11. Okt 2001 vsprintf.c
>
> holds ' base = 10; '
>
> which prevents the real conversion routines ('simple_strtoul' a.s.o.)
> from decoding numbers from bases other than 10.
It's not a problem, it's standard-mandated behaviour.
>From vsscanf(3):
The following conversions are available:
...
d Matches an optionally signed decimal integer; the next pointer
must be a pointer to int.
...
i Matches an optionally signed integer; the next pointer must be a
pointer to int. The integer is read in base 16 if it begins
with `0x' or `0X', in base 8 if it begins with `0', and in base
10 otherwise. Only characters that correspond to the base are
used.
IOW, %d _does_ mean base=10. base=0 is %i. That goes both for kernel and
userland implementations of scanf family (and for any standard-compliant
implementation, for that matter).
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