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Re: [ft] Optimizer problem? (FT2.3.7 + GCC4.2.3)
From: |
Ian Britten |
Subject: |
Re: [ft] Optimizer problem? (FT2.3.7 + GCC4.2.3) |
Date: |
Wed, 23 Jul 2008 11:04:59 -0300 |
User-agent: |
Thunderbird 2.0.0.12 (X11/20080305) |
Ian Britten wrote:
Ok, I think I might have something that I can hand off...
[ Again, I'm using GCC 4.2.3, which is the version that came
preinstalled with this distribution. I haven't had a chance to
try any other version(s) ]
I built a stand-alone debug version of FT+ft2demos, and when I
run:
./ftview 10 /usr/share/fonts/TTF/Vera.ttf
it runs without any problems.
I built a stand-alone optimized (-O3) version of FT+ft2demos,
and when I run:
./ftview 10 /usr/share/fonts/TTF/Vera.ttf
it crashes.
Unfortunately, I don't have any details yet, so I'm not sure if
this is the same problem I'm encountering, or something different.
Ok, I've got some details here:
[ FYI - You can debug 'ftview' by running '.libs/lt-ftview' instead ]
I built 4 versions of ft2demos, solely varying the optimization
option (Everything else was default). Here's the results:
-g -> Works fine, no crash, no Valgrind errors
-O -> Works fine, no crash, no Valgrind errors
-O2 -> Crashes - See attached ft_O2.txt Valgrind log
-O3 -> Crashes - See attached ft_O3.txt Valgrind log
At this point, I'm becoming convinced that there is a problem with
this FT/GCC combo when using high optimization (Only on 32-bit though),
but I'm unsure whether the problem is with FT or GCC.
I'm not sure I can pursue it much further from here, but if there is
anything I can try that'd help you out, please let me know!
Ian
% valgrind .libs/lt-ftview 10 /usr/share/fonts/TTF/Vera.ttf
Memcheck, a memory error detector.
Copyright (C) 2002-2007, and GNU GPL'd, by Julian Seward et al.
Using LibVEX rev 1804, a library for dynamic binary translation.
Copyright (C) 2004-2007, and GNU GPL'd, by OpenWorks LLP.
Using valgrind-3.3.0, a dynamic binary instrumentation framework.
Copyright (C) 2000-2007, and GNU GPL'd, by Julian Seward et al.
For more details, rerun with: -v
Use of uninitialised value of size 4
at 0x40778B1: FTC_Manager_LookupFace (in
/tmp/ft/optO2/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x40778ED: ftc_basic_family_get_count (in
/tmp/ft/optO2/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x4077CE6: ftc_snode_new (in
/tmp/ft/optO2/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x4078733: FTC_Cache_NewNode (in
/tmp/ft/optO2/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x4078A5B: FTC_SBitCache_LookupScaler (in
/tmp/ft/optO2/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x804D0C3: FTDemo_Index_To_Bitmap (in
/tmp/ft/optO2/ft2demos-2.3.7/bin/.libs/lt-ftview)
by 0x804D2DD: FTDemo_Draw_Index (in
/tmp/ft/optO2/ft2demos-2.3.7/bin/.libs/lt-ftview)
by 0x804B049: main (in /tmp/ft/optO2/ft2demos-2.3.7/bin/.libs/lt-ftview)
Use of uninitialised value of size 4
at 0x40779E8: FTC_Manager_LookupSize (in
/tmp/ft/optO2/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x4077DC5: ftc_basic_family_load_bitmap (in
/tmp/ft/optO2/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x4077B1D: ftc_snode_load (in
/tmp/ft/optO2/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x4077D67: ftc_snode_new (in
/tmp/ft/optO2/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x4078733: FTC_Cache_NewNode (in
/tmp/ft/optO2/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x4078A5B: FTC_SBitCache_LookupScaler (in
/tmp/ft/optO2/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x804D0C3: FTDemo_Index_To_Bitmap (in
/tmp/ft/optO2/ft2demos-2.3.7/bin/.libs/lt-ftview)
by 0x804D2DD: FTDemo_Draw_Index (in
/tmp/ft/optO2/ft2demos-2.3.7/bin/.libs/lt-ftview)
by 0x804B049: main (in /tmp/ft/optO2/ft2demos-2.3.7/bin/.libs/lt-ftview)
Invalid read of size 4
at 0x4077DDA: ftc_basic_family_load_bitmap (in
/tmp/ft/optO2/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x4077B1D: ftc_snode_load (in
/tmp/ft/optO2/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x4077D67: ftc_snode_new (in
/tmp/ft/optO2/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x4078733: FTC_Cache_NewNode (in
/tmp/ft/optO2/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x4078A5B: FTC_SBitCache_LookupScaler (in
/tmp/ft/optO2/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x804D0C3: FTDemo_Index_To_Bitmap (in
/tmp/ft/optO2/ft2demos-2.3.7/bin/.libs/lt-ftview)
by 0x804D2DD: FTDemo_Draw_Index (in
/tmp/ft/optO2/ft2demos-2.3.7/bin/.libs/lt-ftview)
by 0x804B049: main (in /tmp/ft/optO2/ft2demos-2.3.7/bin/.libs/lt-ftview)
Address 0xec835657 is not stack'd, malloc'd or (recently) free'd
Process terminating with default action of signal 11 (SIGSEGV)
Access not within mapped region at address 0xEC835657
at 0x4077DDA: ftc_basic_family_load_bitmap (in
/tmp/ft/optO2/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x4077B1D: ftc_snode_load (in
/tmp/ft/optO2/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x4077D67: ftc_snode_new (in
/tmp/ft/optO2/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x4078733: FTC_Cache_NewNode (in
/tmp/ft/optO2/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x4078A5B: FTC_SBitCache_LookupScaler (in
/tmp/ft/optO2/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x804D0C3: FTDemo_Index_To_Bitmap (in
/tmp/ft/optO2/ft2demos-2.3.7/bin/.libs/lt-ftview)
by 0x804D2DD: FTDemo_Draw_Index (in
/tmp/ft/optO2/ft2demos-2.3.7/bin/.libs/lt-ftview)
by 0x804B049: main (in /tmp/ft/optO2/ft2demos-2.3.7/bin/.libs/lt-ftview)
% valgrind .libs/lt-ftview 10 /usr/share/fonts/TTF/Vera.ttf
Memcheck, a memory error detector.
Copyright (C) 2002-2007, and GNU GPL'd, by Julian Seward et al.
Using LibVEX rev 1804, a library for dynamic binary translation.
Copyright (C) 2004-2007, and GNU GPL'd, by OpenWorks LLP.
Using valgrind-3.3.0, a dynamic binary instrumentation framework.
Copyright (C) 2000-2007, and GNU GPL'd, by Julian Seward et al.
For more details, rerun with: -v
Use of uninitialised value of size 4
at 0x4086CA1: FTC_Manager_LookupFace (in
/tmp/ft/optO3/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x4086CDD: ftc_basic_family_get_count (in
/tmp/ft/optO3/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x4089916: ftc_snode_new (in
/tmp/ft/optO3/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x4087C96: FTC_Cache_NewNode (in
/tmp/ft/optO3/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x4088544: FTC_SBitCache_LookupScaler (in
/tmp/ft/optO3/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x804D1F3: FTDemo_Index_To_Bitmap (in
/tmp/ft/optO3/ft2demos-2.3.7/bin/.libs/lt-ftview)
by 0x804D40D: FTDemo_Draw_Index (in
/tmp/ft/optO3/ft2demos-2.3.7/bin/.libs/lt-ftview)
by 0x804B069: main (in /tmp/ft/optO3/ft2demos-2.3.7/bin/.libs/lt-ftview)
Use of uninitialised value of size 4
at 0x4086CE7: ftc_basic_family_get_count (in
/tmp/ft/optO3/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x4089916: ftc_snode_new (in
/tmp/ft/optO3/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x4087C96: FTC_Cache_NewNode (in
/tmp/ft/optO3/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x4088544: FTC_SBitCache_LookupScaler (in
/tmp/ft/optO3/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x804D1F3: FTDemo_Index_To_Bitmap (in
/tmp/ft/optO3/ft2demos-2.3.7/bin/.libs/lt-ftview)
by 0x804D40D: FTDemo_Draw_Index (in
/tmp/ft/optO3/ft2demos-2.3.7/bin/.libs/lt-ftview)
by 0x804B069: main (in /tmp/ft/optO3/ft2demos-2.3.7/bin/.libs/lt-ftview)
Address 0x6f4c5f75 is not stack'd, malloc'd or (recently) free'd
Process terminating with default action of signal 11 (SIGSEGV)
Access not within mapped region at address 0x6F4C5F75
at 0x4086CE7: ftc_basic_family_get_count (in
/tmp/ft/optO3/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x4089916: ftc_snode_new (in
/tmp/ft/optO3/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x4087C96: FTC_Cache_NewNode (in
/tmp/ft/optO3/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x4088544: FTC_SBitCache_LookupScaler (in
/tmp/ft/optO3/freetype-2.3.7/objs/.libs/libfreetype.so.6.3.18)
by 0x804D1F3: FTDemo_Index_To_Bitmap (in
/tmp/ft/optO3/ft2demos-2.3.7/bin/.libs/lt-ftview)
by 0x804D40D: FTDemo_Draw_Index (in
/tmp/ft/optO3/ft2demos-2.3.7/bin/.libs/lt-ftview)
by 0x804B069: main (in /tmp/ft/optO3/ft2demos-2.3.7/bin/.libs/lt-ftview)