[Devel] Crash bug in 2.1.5

[Lars Clausen]

Hi!

I'm having a nasty little crashbug when trying to use FT2 with Pango.  I 
use Paps (http://imagic.weizmann.ac.il/~dov/freesw/paps/) to test, in 
order to keep other cruft out.  I use FreeType version 2.1.5 and Pango 
version 1.2.5, installed in local directories, on a RedHat Enterprise 
system (2.1, i.e. something like 7.0) kernel 2.4.9 When I run Paps in 
GDB, I get the following backtrack:

Program received signal SIGSEGV, Segmentation fault.
__libc_free (mem=0x1) at malloc.c:3136
3136    malloc.c: No such file or directory.
   in malloc.c
(gdb) bt
#0  __libc_free (mem=0x1) at malloc.c:3136
#1  0x40267244 in ft_free (memory=0x806ed80, block=0x1)
   at /home/lc/src/freetype-2.1.5/builds/unix/ftsystem.c:157
#2  0x402675bd in FT_Free (memory=0x806ed80, P=0x80834b8)
   at /home/lc/src/freetype-2.1.5/src/base/ftutil.c:134
#3  0x4029a486 in T1_Face_Done (face=0x8083310)
   at /home/lc/src/freetype-2.1.5/src/type1/t1objs.c:232
#4  0x4026a578 in destroy_face (memory=0x806ed80, face=0x8083310,
   driver=0x8083218) at /home/lc/src/freetype-2.1.5/src/base/ftobjs.c:695
#5  0x4026b673 in FT_Done_Face (face=0x8083310)
   at /home/lc/src/freetype-2.1.5/src/base/ftobjs.c:1838
#6  0x402c8741 in FcFreeTypeQuery (
   file=0x805e840 "/usr/share/fonts/default/ghostscript/hrger.pfa", id=0,
   blanks=0x805e0b8, count=0xbffec968) at fcfreetype.c:910
#7  0x402c8eea in FcFileScan (set=0x80603d0, dirs=0x805a928, 
cache=0x805e4b8,
   blanks=0x805e0b8,
   file=0x805e840 "/usr/share/fonts/default/ghostscript/hrger.pfa", 
force=0)
   at fcdir.c:113
#8  0x402c9143 in FcDirScan (set=0x80603d0, dirs=0x805a928, 
cache=0x805e4b8,
   blanks=0x805e0b8, dir=0x80636b0 "/usr/share/fonts/default/ghostscript",
   force=0) at fcdir.c:221
#9  0x402cbc23 in FcConfigBuildFonts (config=0x805a8c0) at fccfg.c:206
#10 0x402c7139 in FcInitLoadConfigAndFonts () at fcinit.c:83
---Type <return> to continue, or q <return> to quit---
#11 0x402c717e in FcInit () at fcinit.c:101
#12 0x402cbd26 in FcConfigGetCurrent () at fccfg.c:243
#13 0x402cd345 in FcConfigSubstituteWithPat (config=0x0, p=0x805acd8,
   p_pat=0x0, kind=FcMatchPattern) at fccfg.c:1140
#14 0x402cd7f9 in FcConfigSubstitute (config=0x0, p=0x805acd8,
   kind=FcMatchPattern) at fccfg.c:1344
#15 0x400204ef in pango_fc_default_substitute (fontmap=0x8050df8,
   pattern=0x805acd8) at pangoft2-fontmap.c:340
#16 0x4001f55f in pango_fc_font_map_get_patterns (fontmap=0x8050df8,
   context=0x8058f70, desc=0x805a718, language=0x8059010)
   at pangofc-fontmap.cI:574
#17 0x4001f7ba in pango_fc_font_map_load_fontset (fontmap=0x8050df8,
   context=0x8058f70, desc=0x805a718, language=0x8059010)
   at pangofc-fontmap.cI:699
#18 0x400493ed in pango_font_map_load_fontset (fontmap=0x8050df8,
   context=0x8058f70, desc=0x805a718, language=0x8059010)
   at pango-fontmap.c:128
#19 0x400486c3 in add_engines (context=0x8058f70, text=0x8059610 "foo",
   start_index=0, length=3, attrs=0x8059620, cached_iter=0x8059630,
   n_chars=3, analyses=0x805a6c8) at pango-context.c:663
#20 0x40048100 in pango_itemize (context=0x8058f70, text=0x8059610 "foo",
   start_index=0, length=3, attrs=0x8059620, cached_iter=0x8059630)
   at pango-context.c:424
---Type <return> to continue, or q <return> to quit---
#21 0x4004e26f in pango_layout_check_lines (layout=0x80595c0)
   at pango-layout.c:2989
#22 0x4004b7b5 in pango_layout_get_line_count (layout=0x80595c0)
   at pango-layout.c:905
#23 0x0804a076 in split_paragraphs_into_lines (paragraphs=0x8050ed8)
   at paps.c:446
#24 0x08049d47 in main (argc=1, argv=0xbffecf04) at paps.c:335
#25 0x40139687 in __libc_start_main (main=0x80495d0 <main>, argc=1,
   ubp_av=0xbffecf04, init=0x804915c <_init>, fini=0x804ac80 <_fini>,
   rtld_fini=0x4000dc54 <_dl_fini>, stack_end=0xbffecefc)
   at ../sysdeps/generic/libc-start.c:129

I can send you the font in question, if you want (58K).

-Lars