Tony Reix <tony.r...@atos.net> added the comment:
On Fedora32/PPC64LE (5.7.9-200.fc32.ppc64le), with little change:
libc = CDLL('/usr/lib64/libc.so.6')
I get the correct answer:
b'def'
b'def'
b'def'
# python3 --version
Python 3.8.3
libffi : 3.1-24
On Fedora32/x86_64 (5.7.9-200.fc32.x86_64), with a little change:
libc = CDLL('/usr/lib64/libc-2.31.so')
that crashes:
b'def'
Segmentation fault (core dumped)
# python3 --version
Python 3.8.3
libffi : 3.1-24
AIX : libffi-3.2.1
On AIX 7.2, with Python 3.8.5 compiled with XLC v13, in 64bit:
b'def'
b'def'
None
On AIX 7.2, with Python 3.8.5 compiled with GCC 8.4, in 64bit:
b'def'
b'def'
None
On AIX 7.2, with Python 3.8.5 compiled with XLC v13, in 32bit:
( libc = CDLL('libc.a(shr.o)') )
b'def'
b'def'
b'def'
On AIX 7.2, with Python 3.8.5 compiled with GCC 8.4, in 32bit:
b'def'
b'def'
b'def'
Preliminary conclusions:
- this is a 64bit issue on AIX and it is independent of the compiler
- it is worse on Fedora/x86_64
- it works perfectly on Fedora/PPC64LE
what a mess.
----------
nosy: +T.Rex
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<https://bugs.python.org/issue38628>
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