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The website is totally silent on how to debug C extension issues.
I'm encountering an issue where calling PyObject_GetAttrString results in pypy
getting SIGSEGV. The first parameter is the module (return of Py_InitModule3)
stored in a static variable. If I add an extra Py_INCREF to init then that
goes away. It is behaving as though modules are created with a ref count of
zero. Do I have to add an incref for everything that has a static pointer to
it?
My next problem is a list allocated with PyList_New(0). I later call
PyList_GET_SIZE on it and get a SIGSEGV. I put an assertion before that of
PyList_Check but that crashes too. Unfortunately I can't really do much with
the pypy/gdb output:
E<InvalidPointerException object at 0x134fe28>
RPython traceback:
File "implement_1.c", line 52621, in PyList_Check
File "implement_5.c", line 14533, in CpyTypedescr_realize
Program received signal SIGSEGV, Segmentation fault.
0x000000000041118e in ?? ()
(gdb) bt
#0 0x000000000041118e in ?? ()
#1 0x00000000004ab890 in ?? ()
#2 0x0000000000f47bfb in ?? ()
#3 0x000000000043f31f in PyList_Check ()
#4 0x00007ffff5410795 in Connection_close_internal (self=0x7ffff7f91030,
force=1) at src/connection.c:166
#5 0x00007ffff5410b6d in Connection_close (self=0x7ffff7f91030,
args=0x7ffff7f8ee60) at src/connection.c:274
#6 0x0000000000f47bfb in ?? ()
#7 0x0000000000729236 in ?? ()
...
#154 0x00007ffff5cfbeff in __libc_start_main (main=0x4118b0, argc=2,
ubp_av=0x7fffffffe108, init=<value optimized out>, fini=<value optimized out>,
rtld_fini=<value optimized out>, stack_end=0x7fffffffe0f8) at
libc-start.c:226
...
Roger
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