(gdb) b ftfont.m:144 No source file named ftfont.m. Make breakpoint pending on future shared library load? (y or [n]) y Breakpoint 1 (ftfont.m:144) pending. (gdb) r Starting program: /usr/GNUstep/Local/Applications/SystemPreferences.app/SystemPreferences [Thread debugging using libthread_db enabled] [New Thread 0xb6faa6d0 (LWP 3362)] [Switching to Thread 0xb6faa6d0 (LWP 3362)] Breakpoint 1, ft_get_face (fid=0x81951d0, lib=0x81652b8, data=0x0, pface=0x81b0704) at ftfont.m:144 144 if (err) (gdb) p *pface $1 = (FT_Face) 0x81a9930 (gdb) c Continuing. Program received signal SIGSEGV, Segmentation fault. 0xb6ec8460 in -[FTFontInfo initWithFontName:matrix:screenFont:] ( self=0x81c6698, _cmd=0xb7eda388, name=0xb6efb33c, fmatrix=0xbfb1dd74, p_screenFont=0 '\000') at ftfont.m:297 297 for (i = 0; i < face->num_charmaps; i++) (gdb) p *pface No symbol "pface" in current context. (gdb) p face $2 = (FT_Face) 0x8b525150