On Wed, 2 Jun 2004, Igor Pechtchanski wrote:
> On Wed, 2 Jun 2004, Gerrit P. Haase wrote:
>
> [snip]
> > Everything works ok with cygwin-1.5.9. I'll try to recompile with
> > 1.5.10 later, maybe that helps...
> >
> > Gerrit
>
> Try the attached patch. FWIW, it seems like there's a bug here, but
> sscanf used to mask it. Was there a change in the sscanf implementation
> since 1.5.9?
> Igor
Never mind. This is a bug in the newlib scanf family implementation
(actually, in __svfscanf_r in libc/stdio/vfscanf.c) that causes it to read
strings of the form 0x0+ incorrectly. Attached is a testcase that
demonstrates the bug. I suspect the following change:
2004-04-21 J"orn Rennecke <[EMAIL PROTECTED]>
* libc/stdio/vfscanf.c (NNZDIGITS): New define.
(__svfscanf_r): In integer conversions, leave out leading zeroes
which are not part of a base prefix.
Keep track of width truncation to fit into buf, not counting left-out
zeroes against width till the truncation has been compensated for.
HTH,
Igor
--
http://cs.nyu.edu/~pechtcha/
|\ _,,,---,,_ [EMAIL PROTECTED]
ZZZzz /,`.-'`' -. ;-;;,_ [EMAIL PROTECTED]
|,4- ) )-,_. ,\ ( `'-' Igor Pechtchanski, Ph.D.
'---''(_/--' `-'\_) fL a.k.a JaguaR-R-R-r-r-r-.-.-. Meow!
"I have since come to realize that being between your mentor and his route
to the bathroom is a major career booster." -- Patrick Naughton#include <stdlib.h>
#include <stdio.h>
int main(char ac, char *av[]) {
const char *str1 = "0x1 0x0 0x3";
const char *str2 = "0x1 0x2 0x3";
unsigned int i,j,k;
sscanf(str1, "%x %x %x", &i, &j, &k);
printf("Values are: %x %x %x\n", i, j, k);
sscanf(str2, "%x %x %x", &i, &j, &k);
printf("Values are: %x %x %x\n", i, j, k);
}
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