Kiva doesn't work on Ubuntu 12.10

[Snegovikufa]

Hello I've recently updated my ubuntu to 12.10 version. Applications that use Enable doesn't work.
Here is valgrind output of running some enable's example : http://pastebin.com/M3ZPeqpQ

[jwiggins]

This looks like a fun one... ;)

Here's what I think might be happening. Emphasis on might.

Kiva's agg statically links to freetype2 (specifically, v 2.3.12). During initialization, it calls module_init on what it thinks is one of its own internal modules, but instead calls into the system libfreetype. At that point, any number of crazy things could happen depending on how out of sync the two versions of freetype are. In this case, you got a segfault.

Now, I'm not quite sure yet how to avoid calling into the system freetype. The freetype sources are a bit twisty. There are lots of symbols that get prefixed with extern. So that's nice. Perhaps the Kiva build needs to redefine the FT_EXPORT_DEF() macro so that it only calls into itself. I don't have time to try this right now...

Any takers?

[Snegovikufa]

On weekdays I've tried to connect to my work machine via ssh -X from my home laptop with ubuntu 12.04 installed and run some enable applications. There were no errors.

[Snegovikufa]

I have found solution, but don't know what exactly of this helps :

1. Get old libfreetype6 packages from Ubuntu 12.04 and install them.
2. Delete all build folders inside of each folder in ets repository, delete all ets files from dist-packages.
3. Run python ets.py build and sudo python ets.py install (Earlier I wrote sudo python ets.py develop)

[jdmarch]

It is true that at times, deleting enable's build folder is required before
rebuilding it.

On Mon, Oct 22, 2012 at 5:13 AM, Rustam Safin notifications@github.comwrote:

I have found solution, but don't know what exactly of this helps :

1. Get old libfreetype6 packages from Ubuntu 12.04 and install them.
2. Delete all build folders inside of each folder in ets repository,
   delete all ets files from dist-packages.
3. Run python ets.py build and sudo python ets.py install (Earlier I
   wrote sudo python ets.py develop)

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/74#issuecomment-9658635.

[Snegovikufa]

Today I've tried to upgrade my home laptop from 12.04 to 12.10. Kiva doesn't want to work with libfreetype6 v2.4.10

[burnpanck]

Bump!
I use the current git HEAD on Ubuntu 12.10. While some of the tests work, the some tests end in some
*** glibc detected *** python: malloc(): memory corruption
and related backtraces. Among them are:

kiva/tests/dummy.py
enable/tests/test_component_editor.py
enable/tests/kiva_graphics_context_test_case.py

I have to admit, I did not investigate the relation to this bug further.

[jwiggins]

@bunrpanck I think what you are seeing is related to #97

[burnpanck]

@jwiggins Thanks for pointing out that other issue. My symptoms surely look related, though a quick try using Ubuntu 12.10's gcc 4.6 did not solve the issues. Particularly, when running kiva/tests/dummy.py, I still get the following glibc complaint:

*** glibc detected *** /usr/bin/python: free(): invalid next size (fast): 0x0000000001bccc60 ***
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x7eb96)[0x7ffff6f62b96]
/home/yves/pkg-src/ets/enable/kiva/agg/_agg.so(FT_Add_Module+0x1d7)[0x7fffd6326e77]
/home/yves/pkg-src/ets/enable/kiva/agg/_agg.so(FT_Add_Default_Modules+0x2c)[0x7fffd632879c]
/home/yves/pkg-src/ets/enable/kiva/agg/_agg.so(FT_Init_FreeType+0x3f)[0x7fffd63287ef]
/home/yves/pkg-src/ets/enable/kiva/agg/_agg.so(_ZN5agg2425font_engine_freetype_baseC1Ebj+0x8f8)[0x7fffd63192e8]
/home/yves/pkg-src/ets/enable/kiva/agg/_agg.so(+0x520f0)[0x7fffd62540f0]
/lib64/ld-linux-x86-64.so.2(+0xf316)[0x7ffff7de9316]
...

After this, python stops with SIGABRT, with the following backtrace:

 #0  0x00007ffff6f1a425 in raise () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007ffff6f1db8b in abort () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007ffff6f5839e in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007ffff6f62b96 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007fffd6326e77 in FT_Add_Module (library=0x1ef1250, clazz=0x7fffef246540 <t42_driver_class>) at kiva/agg/freetype2/src/base/ftobjs.c:4036
#5  0x00007fffd632879c in FT_Add_Default_Modules (library=0x1ef1250) at kiva/agg/freetype2/src/base/ftinit.c:188
#6  0x00007fffd63287ef in FT_Init_FreeType (alibrary=0x7fffd65bdc60 <gFontEngine+64>) at kiva/agg/freetype2/src/base/ftinit.c:225
#7  0x00007fffd63192e8 in agg24::font_engine_freetype_base::font_engine_freetype_base (this=0x7fffd65bdc20 <gFontEngine>, flag32=<optimized out>, 
    max_faces=<optimized out>) at kiva/agg/agg-24/font_freetype/agg_font_freetype.cpp:555
#8  0x00007fffd62540f0 in font_engine_freetype_int32 (this=0x7fffd65bdc20 <gFontEngine>, max_faces=32) at kiva/agg/agg-24/font_freetype/agg_font_freetype.h:190
#9  __static_initialization_and_destruction_0 (__initialize_p=<optimized out>, __priority=<optimized out>) at kiva/agg/src/kiva_graphics_context_base.cpp:20
#10 _GLOBAL__sub_I_kiva_graphics_context_base.cpp(void) () at kiva/agg/src/kiva_graphics_context_base.cpp:743
#11 0x00007ffff7de9316 in ?? () from /lib64/ld-linux-x86-64.so.2
...

Any ideas?

[jwiggins]

@burnpanck That's definitely the freetype problem.

[aaronayres35]

@rahulporuri We good to close this issue? (I found this while looking for issues mentioning ubuntu while reviewing #889).

[jwiggins]

This is technically still unresolved, but #553 is a more specific description (AFAICT).

Although I'm pretty sure the interest in Ubuntu 12 is considerable less than when this issue was created.

[aaronayres35]

This is technically still unresolved, but #553 is a more specific description (AFAICT).

Ah I see, that makes sense

Although I'm pretty sure the interest in Ubuntu 12 is considerable less than when this issue was created.

Yeah this is sort of what I had been thinking. Nonetheless, if it is unresolved keeping the issue open is reasonable