Segfault on app start using Trusty Beta with packaged PCL

[kubat]

I am trying out the Ubuntu 14.04LTS Beta (Trusty) and have been seeing a strange error.
When using the prebuilt packages by Jochen Sprickerhof, my apps segfault on start if I compile with c++11 enabled.

• This does not occur without c++11 enabled.
• This does not occur when I compile and install from sources.

From within GDB, I see the following trace for the crashes:

`(gdb) run
Program received signal SIGSEGV, Segmentation fault.
0x00007fffed3a1bb0 in boost::math::lanczos::lanczos_initializer<boost::math::lanczos::lanczos17m64, long double>::init::
init() () from /usr/lib/libpcl_features.so.1.7
(gdb) bt
#0 0x00007fffed3a1bb0 in boost::math::lanczos::lanczos_initializer<boost::math::lanczos::lanczos17m64, long double>::in

it::init() () from /usr/lib/libpcl_features.so.1.7
#1 0x00007ffff7dea13a in call_init (l=, argc=argc@entry=1, argv=argv@entry=0x7fffffffdc58, env=env@entry

=0x7fffffffdc68) at dl-init.c:78
#2 0x00007ffff7dea223 in call_init (env=, argv=, argc=, l=)

at dl-init.c:36
#3 _dl_init (main_map=0x7ffff7ffe1c8, argc=1, argv=0x7fffffffdc58, env=0x7fffffffdc68) at dl-init.c:126
#4 0x00007ffff7ddb30a in _dl_start_user () from /lib64/ld-linux-x86-64.so.2
#5 0x0000000000000001 in ?? ()
#6 0x00007fffffffdfda in ?? ()
#7 0x0000000000000000 in ?? ()`

Jochen was kind enough to help me build my own .debs from sources, and these seem to exhibit the same problem.

Details of my setup:

• Ubuntu 14.04LTS Beta
• Running on a VMWare VM on a Macbook Pro (i7)
• Using libboost-math1.54-dev version 1.54.0-4ununtu3 (installed deb)

[Breakthru]

I get the same error on a call generated from the sample_consensus module.
In my case, it happens when CMAKE_BUILD_TYPE is set to Debug (and not on Relase)
Does not happen with a build from source on the same machine.
I'm compiling with C++11 using the flag -std=c++0x
Using Ubuntu 14.04 with libpcl-1.7-all from packages, and g++ (Ubuntu 4.8.2-19ubuntu1) 4.8.2

gdb backtrace:
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff1e55c50 in boost::math::lanczos::lanczos_initializer<boost::math::lanczos::lanczos17m64, long double>::init::init() () from /usr/lib/libpcl_sample_consensus.so.1.7
(gdb) bt
#0 0x00007ffff1e55c50 in boost::math::lanczos::lanczos_initializer<boost::math::lanczos::lanczos17m64, long double>::init::init() () from /usr/lib/libpcl_sample_consensus.so.1.7
#1 0x00007ffff1e2d6de in ?? () from /usr/lib/libpcl_sample_consensus.so.1.7

[taketwo]

This is a know problem, see this or this. In short, you should not mix libraries compiled with different versions of C++ standard. So either build everything from source with C++11 support by yourself, or use system libraries and limit yourself to the old standard. That being said, in many cases you could get lucky and mixing will work just fine.

[jcar87]

As taketwo has mentioned, this is a known problem with Boost, when mixing binaries that include boost/math/special_functions/lanczos.hpp , and one of the binaries is built with c++11 and the other isn't.

If you are building your own project with c++11, you may be better off building PCL with c++11 mode as well (see this patch )

If this isn't possible, I'd suggest using boost 1.60, which apparently fixes this issue. But you would also have to re build PCL (c++11 or not), with that version of boost.