Hello The attached code creates a segfault with Cython 0.14.1. A workaround is to use a real function instead of lambda. Using the normal python interpreter the same code works flawlessly.
Here are my build commands: cython --embed vectorizeBug.pyx gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O0 -Wall -fPIC -lpython2.6 -I/usr/include/python2.6 -o vectorizeBug vectorizeBug.c -- René Rex TU Braunschweig Bioinformatics & Biochemistry Langer Kamp 19 b 38106 Braunschweig Phone: +49-531-391-8315
(gdb) run
Starting program: /home/user/Desktop/vecBug/vectorizeBug
[Thread debugging using libthread_db enabled]
[ 2. 2. 2.]
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff797b208 in ?? () from /usr/lib/libpython2.6.so.1.0
(gdb) backtrace
#0 0x00007ffff797b208 in ?? () from /usr/lib/libpython2.6.so.1.0
#1 0x00007ffff797b590 in PyNumber_Add () from /usr/lib/libpython2.6.so.1.0
#2 0x0000000000401eb5 in __pyx_lambda_funcdef12vectorizeBug_4main_lambda1
(__pyx_self=0x0,
__pyx_args=0x7ffff7f8f050, __pyx_kwds=0x0) at vectorizeBug.c:586
#3 0x00007ffff797abb3 in PyObject_Call () from /usr/lib/libpython2.6.so.1.0
#4 0x00007ffff7a202a9 in PyEval_EvalFrameEx () from
/usr/lib/libpython2.6.so.1.0
#5 0x00007ffff7a21468 in PyEval_EvalFrameEx () from
/usr/lib/libpython2.6.so.1.0
#6 0x00007ffff7a228b0 in PyEval_EvalCodeEx () from /usr/lib/libpython2.6.so.1.0
#7 0x00007ffff79a8630 in ?? () from /usr/lib/libpython2.6.so.1.0
#8 0x00007ffff797abb3 in PyObject_Call () from /usr/lib/libpython2.6.so.1.0
#9 0x00007ffff798c5bf in ?? () from /usr/lib/libpython2.6.so.1.0
#10 0x00007ffff797abb3 in PyObject_Call () from /usr/lib/libpython2.6.so.1.0
#11 0x00007ffff79e1670 in ?? () from /usr/lib/libpython2.6.so.1.0
#12 0x00007ffff79d7958 in ?? () from /usr/lib/libpython2.6.so.1.0
#13 0x00007ffff797abb3 in PyObject_Call () from /usr/lib/libpython2.6.so.1.0
#14 0x0000000000402535 in __pyx_pf_12vectorizeBug_1main (__pyx_self=0x0,
unused=0x0)
at vectorizeBug.c:689
#15 0x00007ffff797abb3 in PyObject_Call () from /usr/lib/libpython2.6.so.1.0
#16 0x00000000004034ff in initvectorizeBug () at vectorizeBug.c:952
#17 0x0000000000403bc7 in main (argc=1, argv=0x7fffffffdfd8) at
vectorizeBug.c:1149
vectorizeBug.pyx
Description: Binary data
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