On Fri, Jul 14, 2006 at 10:18:28AM +0200, Viktor Griph wrote: > On Fri, 14 Jul 2006, Dominik Vogt wrote: > > >On Fri, Jul 14, 2006 at 09:07:21AM +0200, Viktor Griph wrote: > >>On Fri, 14 Jul 2006, Scott Smedley wrote: > >>>>I think there is a bug in FVWM's parameter expansion. > >>>>FVWM crashes with a simple command such as: > >>>> > >>>>Echo $[0] > >>> > >>>Is this supposed to be fixed? FVWM still crashes on my system > >>>when I type "Echo $[0]" in FvwmConsole. > >>> > >>>I am using current version of CVS. > >> > >>There is something wrong with __eae_parse_range. I'm not that good on > >>sscanf, but I think that it will match "%u-%n" even for "0" and return a > >>good number, meaning that n will have a random value. > > > >Yes, one big problem is that %n may or may not increase the return > >code by one, so if > > > > rc = scanf(..., "%u-%n", ...); > > > >returns one, this can mean is parsed just the integer and stopped, > >or it parsed the integer, found a '-' and assigned the %n too. > > > >Fixed. > > > > sscanf seems to not be very restrictive when it comes to unsigned > integers. It seems as if it accepts signed integers as well. At least > $[-1] hang fvwm now.
It doesn't actually hang but tries to skip 2^32-1 tokens. It's a but in Parse.c. Fixed. Ciao Dominik ^_^ ^_^ -- Dominik Vogt, [EMAIL PROTECTED]
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