Re: segfault on 'make check'

[John W. Eaton]

On  6-Dec-2011, John W. Eaton wrote:

| On  5-Dec-2011, Rik wrote:
| 
| | > | The error and backtrace is
| | > | 
| | > | /m: fccache.c:507: FcCacheFini: Assertion `fcCacheChains[i] == ((void 
*)0)'
| | > | failed.
| | > | 
| | > | Program received signal SIGABRT, Aborted.
| 
| Are we using fontconfig incorrectly or is it buggy?  I noticed that
| valgrind produces some warnings related to fontconfig functions, but I
| did not try to fix them.
| 
| Also, I don't see the other crashes.  I'm using Debian x86_64.  What
| kind of system do you have?
| 
| Although we can apparently avoid the crashes by not calling the
| cleanup functions, it seems we are just hiding some other problems if
| we do that.  Or there is some error in the way the cleanup functions
| work that I'm not seeing.

After looking at this for a while, I think the assertion failure in
fontconfig is a bug in fontconfig, but I don't have a simple example
that will cause the failure.

I checked in a few more changes that seem to fix the crashes for me.
For now, I'm skipping the cleanup function for gh_manager.  I intend
to fix it properly but I haven't quite finished the change yet.

jwe