[Fontconfig] Re: Format of cache file are different on 32bit and 64bit system.

[Patrick Lam]

Mike FABIAN wrote:
>>The system I'm on here is amd64 with an ia32 chroot.  /home is shared
>>between the amd64 install and the chroot.
>>
>>1. remove a fonts.cache-2 file (dir cache) from both the install and
>>the chroot
>>2. fc-list in the install
>>3. fc-list in the chroot
>>4. fc-cat ~/.fonts.cache-2 in the install
>>
>>You'll see that the install's .fonts.cache-2 gets trampled by the
>>chroot's .fonts.cache-2.
> 
> 
> I cannot reproduce this. It works fine for me.  I am running 32bit and
> 64bit applications using fontconfig alternatetly and they don't
> trample each others data in ~/.fonts.cache-2.

In that case, it could just be the computer I was using or some aspect
of its configuration.  I'll try to look into it a bit more.

>>Note also that the line you patched was a fix to 'severe perf
>>regression when global fonts.cache-2 files are missing', which you and
>>I tested back in October 2005.  I'm going to test that behaviour as
>>well (put junk in .fonts.cache-2, see what happens).
> 
> If ~/.fonts.cache-2 is "missing", it doesn't have to be deleted.
> 
> Deleting it when the current architecture cannot be found
> cannot be correct in my opinion.

Yes, that's clearly wrong.  The problem was a related case, when it
couldn't make sense of the cache file and just did weird things.

pat