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segfaults.txt
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segfaults.txt
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Nathan said run gdb on Python
people on the Internet talk like you need a debug build of Python (which Anaconda does not provide), but you don't, you don't need debug symbols *for the Python interpreter*, you need debug symbols *for your C extension*, which you get by putting -ggdb and -Og in your setup.py Extension
https://wiki.python.org/moin/DebuggingWithGdb
gdb --eval-command=run --args python2 /home/hannasc2/anaconda3/envs/python2env/lib/python2.7/site-packages/nose/core.py utilities/lib/sphere_ray_tracer/test_ray_tracing.py
ImportError: No module named numpy, do not get that error when just run python2 directly
oh, because python2 is an alias, when do just gdb --eval-command=run --args testsphere it says it doesn't know what testsphere is
gdb --eval-command=run --args /home/hannasc2/anaconda3/envs/python2env/bin/python /home/hannasc2/anaconda3/envs/python2env/lib/python2.7/site-packages/nose/core.py --nocapture utilities/lib/sphere_ray_tracer/test_ray_tracing.py
gdb --eval-command=run --eval-command=bt --args /home/hannasc2/anaconda3/envs/python2env/bin/python /home/hannasc2/anaconda3/envs/python2env/lib/python2.7/site-packages/nose/core.py --nocapture utilities/lib/sphere_ray_tracer/test_ray_tracing.py
Actually, we can do even more with this.
If terminate() is called due to an unhandled exception, this same trick can lead us right to where the exception was thrown.
terminate called after throwing an instance of 'std::logic_error'
what(): bt, can you find me?
Program received signal SIGABRT, Aborted.
0x00007ffff6d1d267 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:55
55 ../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
#0 0x00007ffff6d1d267 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:55
#1 0x00007ffff6d1eeca in __GI_abort () at abort.c:89
#2 0x00007fffe5d1106d in __gnu_cxx::__verbose_terminate_handler() ()
from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#3 0x00007fffe5d0eee6 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#4 0x00007fffe5d0ef31 in std::terminate() () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#5 0x00007fffe5d0f149 in __cxa_throw () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
!!!
#6 0x00007fffe5633426 in someSpace::xy_on_azimuth (x=x@entry=1, y=<optimized out>, cosphi=<optimized out>,
sinphi=<optimized out>) at rayTracingUtils.cpp:362
#7 0x00007fffe5633fa1 in someSpace::AzimuthWedge::intersection (this=<optimized out>, other=...)
at rayTracingUtils.cpp:479
#8 0x00007fffe55d1fa2 in __pyx_pf_2yt_9utilities_3lib_17sphere_ray_tracer_17volumes_and_lines_14PyAzimuthWedge_14intersection_is_empty (__pyx_v_self=__pyx_v_self@entry=0x7fffb72fa290,
__pyx_v_other=__pyx_v_other@entry=0x7fffb72fa410) at volumes_and_lines.cpp:24281
#9 0x00007fffe55d4800 in __pyx_pw_2yt_9utilities_3lib_17sphere_ray_tracer_17volumes_and_lines_14PyAzimuthWedge_15intersection_is_empty (__pyx_v_self=0x7fffb72fa290, __pyx_v_other=0x7fffb72fa410)
at volumes_and_lines.cpp:24254