Re: Segfault in libfontconfig

["Valeriy E. Ushakov" <uwe%ptc.spbu.ru@localhost>]

On Tue, Sep 14, 2004 at 22:37:10 +0400, Valeriy E. Ushakov wrote:

> > fontconfig library uses functions that return structures.  SuperH ABI
> > uses r2 to pass the pointer to the memory for the returned structure.
> > But dynamic linker happily blows r2 away (it's a scratch register
> > otherwise) while doing the dynamic symbol resolution.
> 
> I wonder if _rtld_bind_start (libexec/ld.elf_so/arch/sh3/rtld_start.S)
> should save/restore r2 instead of r3.

I have filed port-sh3/26949 and committed a fix for it, revision 1.4
of libexec/ld.elf_so/arch/sh3/rtld_start.S

I will request the pull-up to 2.0, but I really NEED YOUR HELP.  I
need someone to test this on the 2.0 branch (2.0 is at revision 1.3 of
that file, so pulling this fix up is trivial).  The 2.0 freeze is
already in effect, so I can't request the pull-up w/out a clean build
+ boot test on at least one sh3 platform (well, in theory all pull-ups
should be tested like this, freeze or not :).  But I have absolutely
no time to do that, so I'd very much appreciate if someone can do the
test and drop me a mail.

Thanks in advance.

PS: The original bug should be reproducible with fc-list - which
doesn't require a running X server.

SY, Uwe
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