[Fontconfig] fontconfig: Branch 'master' - 23 commits

[Behdad Esfahbod]

Ok, I've fixed that now.  Yay.

Test has been running happily since.  Chris Wilson also fixed issues in cairo.
 Now my Pango test runs happily even for long periods of time.  Lets see which
library breaks again first ;)

Thanks for the help, and the test, which I'm incorporating into fontconfig now.

behdad

On 13-01-07 08:40 PM, Raimund Steger wrote:
> Behdad Esfahbod wrote:
>> Oh, my bad.  That was against an old fontconfig.  With new one I see malloc
>> failures, perhaps because of a memory corruption...  Investigating.
> 
> Yes, that sounds more like it.
> 
> On Solaris, it depends on what malloc library I use. With the default malloc
> (non-scalable but threadsafe allocator), the crashes are often inside malloc.
> With libmtmalloc (multi-threaded allocator), they are often in FcStrListNext,
> called from FcConfigSubstituteWithPat, like:
> 
> sun2:fontconfig)dbx simple-pthread-test core
> [...]
> t at 2 (l at 2) terminated by signal SEGV (no mapping at the fault address)
> Current function is FcStrListNext
>  1258       return list->set->strs[list->n++];
> (dbx) where
> current thread: t at 2
> =>[1] FcStrListNext(list = 0x8161960), line 1258 in "fcstr.c"
>   [2] FcConfigSubstituteWithPat(config = 0x8065088, p = 0x8161948, p_pat =
> (nil), kind = FcMatchPattern), line 1508 in "fccfg.c"
>   [3] FcConfigSubstitute(config = (nil), p = 0x8161948, kind =
> FcMatchPattern), line 1729 in "fccfg.c"
>   [4] test_match(thr_num = 1, test_num = 40), line 53 in "simple-pthread-test.c"
>   [5] run_test_in_thread(arg = 0x8046e0c), line 68 in "simple-pthread-test.c"
>   [6] _thr_setup(0xfe720200), at 0xfee4875b
>   [7] _lwp_start(0x0, 0x8161964, 0x8161960, 0xfe82ef6c, 0xfeeefc1f,
> 0x8161960), at 0xfee48a60
> 
> 
> This is also what I have now seen on another box (FreeBSD 8.3, 8 core Opteron,
> 32 bit ABI, clang 3.0 -- which supports the GCC builtins -- with unmodified
> Git master):
> 
> bsd1:fontconfig)gdb simple-pthread-test simple-pthread-test.core
> [...]
> #0  0x280afc1c in IA__FcStrListNext (list=Variable "list" is not available.
> ) at fcstr.c:1258
> [...]
> (gdb) where
> #0  0x280afc1c in IA__FcStrListNext (list=Variable "list" is not available.
> ) at fcstr.c:1258
> #1  0x28096a41 in IA__FcConfigSubstituteWithPat (config=Unhandled dwarf
> expression opcode 0x0
> ) at fccfg.c:1508
> #2  0x28097534 in IA__FcConfigSubstitute (config=0x7e0e5f30, p=0x7e0e5f30,
>     kind=2114871088) at fccfg.c:1729
> #3  0x08048886 in test_match (thr_num=39, test_num=243)
>     at simple-pthread-test.c:53
> #4  0x080488ff in run_test_in_thread (arg=0x7fbfe8e4) at simple-pthread-test.c:68
> #5  0x280cb76f in pthread_getprio () from /lib/libthr.so.3
> #6  0x00000000 in ?? ()
> 
> 
> 
> -Raimund
> 
> 
> 
> 
> 

-- 
behdad
http://behdad.org/