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Closed
Description
Bug report
Bug description:
The problem:
ctypes.util.find_library() raises an exception on certain inputs when it cannot find it.
Expected behavior:
No exception, returnNone asadvertised if it cannot find the library.
Reproducer:
# on python 3.10, but same deal on other versions too>>>importctypes.util>>>ctypes.util.find_library('libgomp')Traceback (mostrecentcalllast):File"<stdin>",line1,in<module>File"/path/to/lib/python3.10/ctypes/util.py",line351,infind_library_get_soname(_findLib_gcc(name))or_get_soname(_findLib_ld(name))File"/path/to/lib/python3.10/ctypes/util.py",line148,in_findLib_gccifnot_is_elf(file):File"/path/to/lib/python3.10/ctypes/util.py",line100,in_is_elfwithopen(filename,'br')asthefile:FileNotFoundError: [Errno2]Nosuchfileordirectory:b'liblibgomp.a'
Note that the crash does not occur if you put nonsense in:
find_library('asdadsas')-> OKfind_library('libasdasdasd')-> OK
The problem appears to be a bit more contrived. Python is attempting to parse the output from gcc, which in this case is:
/usr/lib/gcc/x86_64-linux-gnu/12/../../../x86_64-linux-gnu/Scrt1.o/usr/lib/gcc/x86_64-linux-gnu/12/../../../x86_64-linux-gnu/crti.o/usr/lib/gcc/x86_64-linux-gnu/12/crtbeginS.o/usr/bin/ld: cannot find -llibgomp: No such file or directory/usr/bin/ld: note to link with /usr/lib/gcc/x86_64-linux-gnu/12/libgomp.a use -l:libgomp.a or rename it to liblibgomp.a/usr/lib/gcc/x86_64-linux-gnu/12/libgcc.a/usr/lib/gcc/x86_64-linux-gnu/12/libgcc_s.so/usr/lib/gcc/x86_64-linux-gnu/12/../../../x86_64-linux-gnu/libgcc_s.so.1/usr/lib/gcc/x86_64-linux-gnu/12/libgcc.acollect2: error: ld returned 1 exit statusBut then the parser is getting confused trying to parse the useful diagnostic message mentioninglibgomp.a.
Machine details (fromplatform.uname())
uname_result(system='Linux', node='iblis', release='6.5.0-14-generic', version='#14~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Mon Nov 20 18:15:30 UTC 2', machine='x86_64')CPython versions tested on:
3.10, 3.11, 3.12
Operating systems tested on:
Linux