Vinay Sajip added the comment: Thanks for spelling it out for me, that's helpful. But I'm still confused about a couple of things: I can't find classify_argument in the Python source tree other than in
Modules/_ctypes/libffi_osx/x86/x86-ffi64.c Is that the file you referred to as ffi64.c? I assumed this is only used on OS X. Do we just use the system libffi on Linux? I also note that if I use the following: typedef struct { int foo; int bar; unsigned char data[8]; } Test; which is certainly the same size of struct, there's no abort and the sum is correctly calculated and returned as 28, which is printed by the Python script. If I swap things around so that the array comes first in the structure, that also works. If I increase the array size back to 16 (giving a total structure size of 24), that also works. If I then comment out the 'int foo' and 'int bar' fields in both C and Python, the abort reappears. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue22273> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com