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Compiling in Eclipse only works once in a while

Building FlightGear from source, and in the need for help?

Compiling in Eclipse only works once in a while

Postby Divi » Thu Dec 25, 2014 6:09 am

Hi Dev's
I'm facing this problem from long time with single DELL Precision T7610 pc (ubuntu 12.04LTS) with 3 Monitor and 3 k5000 nvidia quadro graphics card(64 gb RAM).If i compiling the source code through eclipse and the visual application through the following error. once in a while it works perfectly. i dont know how to solve this error and dont know it may be due to hardware or software. please somebody help me.....

Code: Select all
Starting program: /root/VISUAL_SIM_3.0.0/VISUAL_SIM/Debug/VISUAL_SIM
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffee0d2700 (LWP 3318)]
[Thread 0x7fffee0d2700 (LWP 3318) exited]
[New Thread 0x7fffee0d2700 (LWP 3319)]
[Thread 0x7fffee0d2700 (LWP 3319) exited]
[New Thread 0x7fffee0d2700 (LWP 3320)]
[Thread 0x7fffee0d2700 (LWP 3320) exited]
[New Thread 0x7fffee0d2700 (LWP 3321)]

IP Address is Found : 192.9.85.61
Enabling ATI viewport hack
[New Thread 0x7fffed240700 (LWP 3322)]
[New Thread 0x7fffeca3f700 (LWP 3323)]
[New Thread 0x7fffec23e700 (LWP 3324)]
[New Thread 0x7fffeba3d700 (LWP 3325)]
[New Thread 0x7fffeb23c700 (LWP 3326)]
[New Thread 0x7fffeaa3b700 (LWP 3327)]
[New Thread 0x7fffea23a700 (LWP 3328)]
[New Thread 0x7fffe9a39700 (LWP 3329)]
[New Thread 0x7fffe9238700 (LWP 3330)]
[New Thread 0x7fffe8a37700 (LWP 3331)]

[b]Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffed240700 (LWP 3322)]
0x00000000004c55ab in NotifyLogger::notify (this=0x172ba00,
    severity=osg::WARN,
    message=0x7fffcc004408 "         the final reference count was 4294967294, memory corruption possible.\n") at ../src/Viewer/fg_os_osgviewer.cxx:202
202         *trigger_segfault = 0;[/b]
(gdb) bt
#0  0x00000000004c55ab in NotifyLogger::notify (this=0x172ba00,
    severity=osg::WARN,
    message=0x7fffcc004408 "         the final reference count was 4294967294, memory corruption possible.\n") at ../src/Viewer/fg_os_osgviewer.cxx:202
#1  0x00007ffff7408528 in osg::NotifyStreamBuffer::sync() ()
   from /usr/lib/libosg.so.80
#2  0x00007ffff2ef432e in std::ostream::flush() ()
   from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#3  0x00007ffff74358bd in osg::Referenced::~Referenced() ()
   from /usr/lib/libosg.so.80
#4  0x00007ffff7408cea in osg::Object::~Object() () from /usr/lib/libosg.so.80
#5  0x00007ffff5a59cc1 in osgUtil::RenderStageCache::~RenderStageCache() ()
   from /usr/lib/libosgUtil.so.80
#6  0x00007ffff5a59d2a in osgUtil::RenderStageCache::~RenderStageCache() ()
   from /usr/lib/libosgUtil.so.80
#7  0x00007ffff7435b98 in osg::Referenced::signalObserversAndDelete(bool, bool) const () from /usr/lib/libosg.so.80
#8  0x00000000004a8667 in osg::Referenced::unref (this=0x7fffc4004230)
    at /usr/local/include/osg/Referenced:198
#9  0x0000000000615589 in osg::ref_ptr<osg::Object>::operator= (
    this=0x1cd8140, ptr=0x7fffcc0041b0) at /usr/local/include/osg/ref_ptr:58
#10 0x00007ffff5a46bcc in osg::Camera::setRenderingCache(osg::Object*) ()
   from /usr/lib/libosgUtil.so.80


some time i am getting this error

Code: Select all
0x00007ffff7b28edb in SGPropertyNode::setFloatValue(float) ()
   from /usr/local/lib/libSimGearCore.so.3.0.0
(gdb) bt
#0  0x00007ffff7b28edb in SGPropertyNode::setFloatValue(float) ()
   from /usr/local/lib/libSimGearCore.so.3.0.0
#1  0x0000000000c23a44 in simgear::canvas::Element::setBoundingBox(osg::BoundingBoxImpl<osg::Vec3f> const&) ()
#2  0x0000000000c3c35e in simgear::canvas::Path::PathDrawable::computeBound() const ()
#3  0x0000000000c27221 in osg::Drawable::getBound() const ()
#4  0x00007ffff735c752 in osg::Geode::computeBound() const ()
   from /usr/lib/libosg.so.80
#5  0x00000000004dde6d in osg::Node::getBound (this=0x930a8e0)
    at /usr/local/include/osg/Node:368
#6  0x00007ffff73bba96 in osg::Group::computeBound() const ()
   from /usr/lib/libosg.so.80
#7  0x00007ffff74b75bd in osg::Transform::computeBound() const ()
   from /usr/lib/libosg.so.80
#8  0x00000000004dde6d in osg::Node::getBound (this=0x930a2a0)
    at /usr/local/include/osg/Node:368
#9  0x00007ffff73bba96 in osg::Group::computeBound() const ()
   from /usr/lib/libosg.so.80
#10 0x00007ffff74b75bd in osg::Transform::computeBound() const ()
   from /usr/lib/libosg.so.80
#11 0x00000000004dde6d in osg::Node::getBound (this=0x9176a90)
    at /usr/local/include/osg/Node:368


*** glibc detected *** --airport-id=VOBG: double free or corruption (fasttop): 0x000000000ba3e770 ***
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x7e846)[0x7ff61a6f9846]
/lib/x86_64-linux-gnu/libc.so.6(+0x81a20)[0x7ff61a6fca20]
/lib/x86_64-linux-gnu/libc.so.6(realloc+0xee)[0x7ff61a6fe3fe]
/usr/lib/tls/libnvidia-tls.so.340.46(+0x214a)[0x7ff6195f814a]
======= Memory map: ========
00400000-010ec000 r-xp 00000000 08:03 47060725                           /root/VISUAL_SIM/VISUAL_SIM/Debug/VISUAL_SIM
012eb000-012ed000 r--p 00ceb000 08:03 47060725                           /root/VISUAL_SIM/VISUAL_SIM/Debug/VISUAL_SIM
012ed000-01310000 rw-p 00ced000 08:03 47060725                           /root/VISUAL_SIM/VISUAL_SIM/Debug/VISUAL_SIM
01310000-01341000 rw-p 00000000 00:00 0
032d9000-0bbbf000 rw-p 00000000 00:00 0                                  [heap]
4007f000-40081000 r-xs 00000000 08:03 52690986                           /tmp/.glBY3pMh (deleted)
4023a000-4023c000 r-xs 00000000 08:03 52690979                           /tmp/.glnOZ0VF (deleted)
4026a000-40306000 rw-p 00000000 00:00 0
4092f000-40931000 r-xs 00000000 08:03 52690976                           /tmp/.glhKGXTm (deleted)
40a32000-40a34000 r-xs 00000000 08:03 52690982                           /tmp/.gljXUhVD (deleted)
40a37000-40a39000 r-xs 00000000 08:03 52690980                           /tmp/.glvVH5Ak (deleted)
40ac1000-40ac3000 r-xs 00000000 08:03 52690985                           /tmp/.glFSXBOC (deleted)
410b1000-410b3000 r-xs 00000000 08:03 52690970                           /tmp/.glvRm2Mp (deleted)
41141000-41143000 r-xs 00000000 08:03 52690978                           /tmp/.gll6ZXg1 (deleted)
412c1000-4135d000 rw-p 00000000 00:00 0
417fd000-417ff000 r-xs 00000000 08:03 52690984                           /tmp/.glv9IOQX (deleted)
4190d000-4190f000 r-xs 00000000 08:03 52690983                           /tmp/.glrno2Si (deleted)
41aa0000-41aa2000 r-xs 00000000 08:03 52690973                           /tmp/.glXJXZ93 (deleted)
41ad8000-41ada000 r-xs 00000000 08:03 52690981                           /tmp/.glNllbgZ (deleted)
41aee000-41af0000 r-xs 00000000 08:03 52690974                           /tmp/.glHnlYwI (deleted)
41bd2000-41c6e000 rw-p 00000000 00:00 0
7ff5d4f23000-7ff5d4f28000 r-xp 00000000 08:03 533324                     /usr/lib/x86_64-linux-gnu/libXfixes.so.3.1.0
7ff5d4f28000-7ff5d5127000 ---p 00005000 08:03 533324                     /usr/lib/x86_64-linux-gnu/libXfixes.so.3.1.0
7ff5d5127000-7ff5d5128000 r--p 00004000 08:03 533324                     /usr/lib/x86_64-linux-gnu/libXfixes.so.3.1.0
7ff5d5128000-7ff5d5129000 rw-p 00005000 08:03 533324                     /usr/lib/x86_64-linux-gnu/libXfixes.so.3.1.0
7ff5d5129000-7ff5d5132000 r-xp 00000000 08:03 533307                     /usr/lib/x86_64-linux-gnu/libXcursor.so.1.0.2
7ff5d5132000-7ff5d5331000 ---p 00009000 08:03 533307                     /usr/lib/x86_64-linux-gnu/libXcursor.so.1.0.2
7ff5d5331000-7ff5d5332000 r--p 00008000 08:03 533307                     /usr/lib/x86_64-linux-gnu/libXcursor.so.1.0.2
7ff5d5332000-7ff5d5333000 rw-p 00009000 08:03 533307                     /usr/lib/x86_64-linux-gnu/libXcursor.so.1.0.2
7ff5d5333000-7ff5d5733000 rw-s 7ad93e000 00:05 13516                     /dev/nvidiactl
7ff5d5733000-7ff5d5b33000 rw-s 7fd105000 00:05 13516                     /dev/nvidiactl
7ff5d5b33000-7ff5d5bc9000 r-xp 00000000 08:03 532540                     /usr/lib/x86_64-linux-gnu/libfreetype.so.6.8.0
7ff5d5bc9000-7ff5d5dc8000 ---p 00096000 08:03 532540                     /usr/lib/x86_64-linux-gnu/libfreetype.so.6.8.0
7ff5d5dc8000-7ff5d5dce000 r--p 00095000 08:03 532540                     /usr/lib/x86_64-linux-gnu/libfreetype.so.6.8.0
7ff5d5dce000-7ff5d5dcf000 rw-p 0009b000 08:03 532540                     /usr/lib/x86_64-linux-gnu/libfreetype.so.6.8.0
7ff5d5dcf000-7ff5d5dfb000 r-xp 00000000 08:03 5510271                    /usr/local/lib64/osgPlugins-3.0.1/osgdb_freetype.so
7ff5d5dfb000-7ff5d5ffb000 ---p 0002c000 08:03 5510271                    /usr/local/lib64/osgPlugins-3.0.1/osgdb_freetype.so
7ff5d5ffb000-7ff5d5ffc000 r--p 0002c000 08:03 5510271                    /usr/local/lib64/osgPlugins-3.0.1/osgdb_freetype.so
7ff5d5ffc000-7ff5d5ffe000 rw-p 0002d000 08:03 5510271                    /usr/local/lib64/osgPlugins-3.0.1/osgdb_freetype.so
7ff5d5ffe000-7ff5d8000000 rw-p 00000000 00:00 0
7ff5d8000000-7ff5d82fa000 rw-p 00000000 00:00 0
7ff5d82fa000-7ff5dc000000 ---p 00000000 00:00 0
7ff5dc19b000-7ff5dc1da000 r-xp 00000000 08:03 526447                     /usr/lib/x86_64-linux-gnu/libjpeg.so.8.0.2
7ff5dc1da000-7ff5dc3d9000 ---p 0003f000 08:03 526447                     /usr/lib/x86_64-linux-gnu/libjpeg.so.8.0.2
7ff5dc3d9000-7ff5dc3da000 r--p 0003e000 08:03 526447                     /usr/lib/x86_64-linux-gnu/libjpeg.so.8.0.2
7ff5dc3da000-7ff5dc3db000 rw-p 0003f000 08:03 526447                     /usr/lib/x86_64-linux-gnu/libjpeg.so.8.0.2
7ff5dc3db000-7ff5dc3eb000 rw-p 00000000 00:00 0
7ff5dc3eb000-7ff5dc3f7000 r-xp 00000000 08:03 5509617                    /usr/local/lib64/osgPlugins-3.0.1/osgdb_jpeg.so
7ff5dc3f7000-7ff5dc5f6000 ---p 0000c000 08:03 5509617                    /usr/local/lib64/osgPlugins-3.0.1/osgdb_jpeg.so
7ff5dc5f6000-7ff5dc5f7000 r--p 0000b000 08:03 5509617                    /usr/local/lib64/osgPlugins-3.0.1/osgdb_jpeg.so
7ff5dc5f7000-7ff5dc5f8000 rw-p 0000c000 08:03 5509617                    /usr/local/lib64/osgPlugins-3.0.1/osgdb_jpeg.so
7ff5dc5f8000-7ff5dd5f9000 rw-p 00000000 00:00 0
7ff5dd5f9000-7ff5dd67d000 r-xp 00000000 08:03 5510256                    /usr/local/lib64/osgPlugins-3.0.1/osgdb_ac.so
7ff5dd67d000-7ff5dd87c000 ---p 00084000 08:03 5510256                    /usr/local/lib64/osgPlugins-3.0.1/osgdb_ac.so
7ff5dd87c000-7ff5dd87e000 r--p 00083000 08:03 5510256                    /usr/local/lib64/osgPlugins-3.0.1/osgdb_ac.so
7ff5dd87e000-7ff5dd882000 rw-p 00085000 08:03 5510256                    /usr/local/lib64/osgPlugins-3.0.1/osgdb_ac.so
7ff5dd882000-7ff5dd88e000 r-xp 00000000 08:03 5509478                    /usr/local/lib64/osgPlugins-3.0.1/osgdb_rgb.so
7ff5dd88e000-7ff5dda8d000 ---p 0000c000 08:03 5509478                    /usr/local/lib64/osgPlugins-3.0.1/osgdb_rgb.so
7ff5dda8d000-7ff5dda8e000 r--p 0000b000 08:03 5509478                    /usr/local/lib64/osgPlugins-3.0.1/osgdb_rgb.so
7ff5dda8e000-7ff5dda8f000 rw-p 0000c000 08:03 5509478                    /usr/local/lib64/osgPlugins-3.0.1/osgdb_rgb.so
7ff5dda8f000-7ff5ddaa7000 r-xp 00000000 08:03 14160113                   /lib/x86_64-linux-gnu/libresolv-2.15.so
7ff5ddaa7000-7ff5ddca7000 ---p 00018000 08:03 14160113                   /lib/x86_64-linux-gnu/libresolv-2.15.so
7ff5ddca7000-7ff5ddca8000 r--p 00018000 08:03 14160113                   /lib/x86_64-linux-gnu/libresolv-2.15.so
7ff5ddca8000-7ff5ddca9000 rw-p 00019000 08:03 14160113                   /lib/x86_64-linux-gnu/libresolv-2.15.so
7ff5ddca9000-7ff5ddcab000 rw-p 00000000 00:00 0
7ff5ddcab000-7ff5ddcb2000 r-xp 00000000 08:03 14160114                   /lib/x86_64-linux-gnu/libnss_dns-2.15.so
7ff5ddcb2000-7ff5ddeb1000 ---p 00007000 08:03 14160114                   /lib/x86_64-linux-gnu/libnss_dns-2.15.so
7ff5ddeb1000-7ff5ddeb2000 r--p 00006000 08:03 14160114                   /lib/x86_64-linux-gnu/libnss_dns-2.15.so
7ff5ddeb2000-7ff5ddeb3000 rw-p 00007000 08:03 14160114                   /lib/x86_64-linux-gnu/libnss_dns-2.15.so
7ff5ddeb3000-7ff5ddeb5000 r-xp 00000000 08:03 14155830                   /lib/libnss_mdns4_minimal.so.2
7ff5ddeb5000-7ff5de0b4000 ---p 00002000 08:03 14155830                   /lib/libnss_mdns4_minimal.so.2
7ff5de0b4000-7ff5de0b5000 r--p 00001000 08:03 14155830                   /lib/libnss_mdns4_minimal.so.2
7ff5de0b5000-7ff5de0b6000 rw-p 00002000 08:03 14155830                   /lib/libnss_mdns4_minimal.so.2
7ff5de0b6000-7ff5de0b7000 ---p 00000000 00:00 0
7ff5de0b7000-7ff5de8b7000 rw-p 00000000 00:00 0
7ff5de8b7000-7ff5decb7000 rw-s 8062fe000 00:05 13516                     /dev/nvidiactl
7ff5decb7000-7ff5df0b7000 rw-s 80e715000 00:05 13516                     /dev/nvidiactl
7ff5df0b7000-7ff5df4b7000 rw-s 805dea000 00:05 13516                     /dev/nvidiactl
7ff5df4b7000-7ff5e0000000 rw-p 00000000 00:00 0
7ff5e0000000-7ff5e0a3a000 rw-p 00000000 00:00 0
7ff5e0a3a000-7ff5e4000000 ---p 00000000 00:00 0
7ff5e4063000-7ff5e406f000 r-xp 00000000 08:03 14160112                   /lib/x86_64-linux-gnu/libnss_files-2.15.so
7ff5e406f000-7ff5e426e000 ---p 0000c000 08:03 14160112                   /lib/x86_64-linux-gnu/libnss_files-2.15.so
7ff5e426e000-7ff5e426f000 r--p 0000b000 08:03 14160112                   /lib/x86_64-linux-gnu/libnss_files-2.15.so
7ff5e426f000-7ff5e4270000 rw-p 0000c000 08:03 14160112                   /lib/x86_64-linux-gnu/libnss_files-2.15.so
7ff5e4270000-7ff5e42f0000 rw-p 00000000 00:00 0
7ff5e42f0000-7ff5e46f0000 rw-s 826d11000 00:05 13516                     /dev/nvidiactl
7ff5e46f0000-7ff5e4af0000 rw-s 80c583000 00:05 13516                     /dev/nvidiactl
7ff5e4af0000-7ff5e4ef0000 rw-s 7fd7de000 00:05 13516                     /dev/nvidiactl
7ff5e4ef0000-7ff5e4ef8000 rw-p 00000000 00:00 0
7ff5e4ef9000-7ff5e52f9000 rw-s 826d33000 00:05 13516                     /dev/nvidiactl
7ff5e52f9000-7ff5e5301000 rw-p 00000000 00:00 0
7ff5e5301000-7ff5e5501000 rw-s 8212f6000 00:05 13516                     /dev/nvidiactl
7ff5e5501000-7ff5e5c8c000 rw-p 00000000 00:00 0
7ff5e5c8c000-7ff5e5e8c000 rw-s 80f0d3000 00:05 13516                     /dev/nvidiactl
7ff5e5e8c000-7ff5e6720000 rw-p 00000000 00:00 0
7ff5e6821000-7ff5e6a21000 rw-s 80ccac000 00:05 13516                     /dev/nvidiactl
7ff5e6a21000-7ff5e74df000 rw-p 00000000 00:00 0
7ff5e74df000-7ff5e755f000 rw-s 80f3fa000 00:05 13516                     /dev/nvidiactl
7ff5e755f000-7ff5e75df000 rw-s 80e597000 00:05 13516                     /dev/nvidiactl
7ff5e75df000-7ff5e765f000 rw-s 80c811000 00:05 13516                     /dev/nvidiactl
7ff5e765f000-7ff5e76df000 rw-s 82126f000 00:05 13516                     /dev/nvidiactl
7ff5e77df000-7ff5e77ff000 rw-s e01e0000 00:05 36961                      /dev/nvidia2
7ff5e77ff000-7ff5e7800000 ---p 00000000 00:00 0
7ff5e7800000-7ff5e8000000 rw-p 00000000 00:00 0
7ff5e8000000-7ff5e8e71000 rw-p 00000000 00:00 0
7ff5e8e71000-7ff5ec000000 ---p 00000000 00:00 0
7ff5ec000000-7ff5eca77000 rw-p 00000000 00:00 0
7ff5eca77000-7ff5f0000000 ---p 00000000 00:00 0
7ff5f0000000-7ff5f0021000 rw-p 00000000 00:00 0
7ff5f0021000-7ff5f4000000 ---p 00000000 00:00 0
7ff5f4000000-7ff5f4021000 rw-p 00000000 00:00 0
7ff5f4021000-7ff5f8000000 ---p 00000000 00:00 0
7ff5f8000000-7ff5f8021000 rw-p 00000000 00:00 0
7ff5f8021000-7ff5fc000000 ---p 00000000 00:00 0
7ff5fc000000-7ff5fc021000 rw-p 00000000 00:00 0
7ff5fc021000-7ff600000000 ---p 00000000 00:00 0
7ff600000000-7ff600021000 rw-p 00000000 00:00 0
7ff600021000-7ff604000000 ---p 00000000 00:00 0
7ff604001000-7ff604003000 rw-s 00000000 08:03 52690986                   /tmp/.glBY3pMh (deleted)
7ff604003000-7ff604005000 rw-s 00000000 08:03 52690985                   /tmp/.glFSXBOC (deleted)
7ff604005000-7ff604007000 rw-s 00000000 08:03 52690984                   /tmp/.glv9IOQX (deleted)
7ff604007000-7ff604009000 rw-s 00000000 08:03 52690983                   /tmp/.glrno2Si (deleted)
7ff604009000-7ff604010000 rw-s 827809000 00:05 13516                     /dev/nvidiactl
7ff604010000-7ff604050000 rw-s 827a07000 00:05 13516                     /dev/nvidiactl
7ff604050000-7ff604070000 rw-s 82a666000 00:05 13516                     /dev/nvidiactl
7ff604070000-7ff604071000 rw-s efd60000 00:05 36961                      /dev/nvidia2
7ff604071000-7ff6040b1000 rw-s 80d425000 00:05 13516                     /dev/nvidiactl
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7fffdb921000-7fffdb945000 rw-p 00000000 00:00 0                          [stack]
7fffdb96a000-7fffdb96b000 r-xp 00000000 00:00 0                          [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0                  [vsyscall]
Last edited by Johan G on Thu Dec 25, 2014 7:33 pm, edited 1 time in total.
Reason: Please use [code] tags for long listings. They can be added manually or by clicking the [>_ ] button.
Divi
 
Posts: 34
Joined: Wed Jul 09, 2014 9:06 am
Version: 3.0
OS: Ubuntu 12.04

Re: Compiling in Eclipse only works once in a while

Postby Hooray » Thu Dec 25, 2014 10:49 pm

Hi & welcome,


(disclaimer: none of these seem to be related to compilation errors, i.e. these are all run-time segfaults - is this correct ?)
the first one looks like it should be multi-threading related.

The second issue seems Canvas related, for which TheTom would be the primary developer who could deal with your feedback/backtraces

For proper backtraces, please refer to these instructions: http://wiki.flightgear.org/Troubleshoot ... Backtraces
If this is indeed threading related, please consider using AddressSanitizer, as per: http://wiki.flightgear.org/Troubleshoot ... sSanitizer

For the sake of troubleshooting, it would help if you could come up with two minimal test-cases for reproducing these two bugs, so that we can try to trigger these segfaults locally.
For instance, it would be particularly interesting if the issue is affected by the selected location/airport and aircraft or other features.
For testing purposes, you can try to use the following startup profile to determine a minimum set of (hopefully) working settings: http://wiki.flightgear.org/Troubleshoot ... up_profile

Given that the first issue seems possibly threading related, I'd suggest to play with different multi-threading modes, especially given that the DELL Precision T7610 pc is a fairly powerful multi-core workstation, for instructions on doing this, please refer to: http://wiki.flightgear.org/Howto:Activa ... PU_support

Overall, given the specs of your hardware, it is very well possible that you're running into FlightGear's well-known multi-threading issues - because even on an average system with a few cores, multiple threads will often be serialized behind the scenes, only masssively concurrent workstations -like your's- would exhibit certain issues, that would otherwise remain masked. I don't think we have many other contributors around here with similarly powerful hardware actually making use of multiple screens/GPUs, so you may be in uncharted waters currently.
However, it would be really great if you could do a little more testing and actually consider using AddressSanitizer to post bug reports via the tracker to hopefully help identify more of these issues.

PS: Please file bug reports for both issues at the tracker so that core developers can take a look (or at least to keep things neatly organized for the long term): https://code.google.com/p/flightgear-bugs/issues/entry
Please include a full backtrace with each report, and a link to the discussion on the forum (for future reference), including the help/about dialog (screen shot or via the "copy to clipboard" button). The latter will be particularly important to see which libs (OSG) are linked into your binary.
Please don't send support requests by PM, instead post your questions on the forum so that all users can contribute and benefit
Thanks & all the best,
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pui2canvas | MapStructure | Canvas Development | Programming resources
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