Álvaro Justen <alvarojus...@gmail.com> added the comment:
I've cloned the cpython git repository and made fresh builds here:
On v.3.6.6 (4cf1f54eb764f856fda5a394d8598c0c90d69d77) it works:
$ git checkout v3.6.6 && ./configure && make && ./python --version &&
./python namedtuple_bug.py
[...compilation lines supressed...]
Python 3.6.6
On the v.3.7.0 (1bf9cc509326bc42cd8cb1650eb9bf64550d817e) it segfaults:
$ git checkout v3.7.0 && make clean && ./configure && make && ./python
--version && ./python namedtuple_bug.py
[...compilation lines supressed...]
Python 3.7.0
Segmentation fault
On the most recent 3.7 branch (65ef7425a32ee411d8047a4fad0fc6bb9ff733b1) it
works:
$ git checkout 3.7 && make clean && ./configure && make && ./python
--version && ./python namedtuple_bug.py
[...compilation lines supressed...]
Python 3.7.0+
On master branch (2c8ddcf4f14f3e4c87a6fe6678ab5ad09130c6ab) it also works:
$ git checkout master && make clean && ./configure && make && ./python
--version && ./python namedtuple_bug.py
[...compilation lines supressed...]
Python 3.8.0a0
Note: I've tried to add a `print('works!')` at the end of the script, so we can
see the result when it does not segfault, but adding this actually make it
works on all versions; removing this line has the behaviour reported above.
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<https://bugs.python.org/issue34539>
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