Hi All,
I was doing some bug hunting and noticed that scipy's pytests crashed
pretty early. I tracked down exactly what was causing the problem and
noticed it can be reproduced by the following sequence of commands:
sage: import numpy as np
sage: x = np.random.randn(1000000,2)
sage: y = np.random.randn(2,2)
sage: x.dot(y)
produces:
------------------------------------------------------------------------
0 signals.cpython-38-darwin.so 0x00000001088bc62a print_backtrace
+ 58
1 signals.cpython-38-darwin.so 0x00000001088c0277 sigdie + 39
2 signals.cpython-38-darwin.so 0x00000001088c0212 sigdie_for_sig +
290
3 libsystem_platform.dylib 0x00007fff6c88e5fd _sigtramp + 29
------------------------------------------------------------------------
Unhandled SIGBUS: A bus error occurred.
This probably occurred because a *compiled* module has a bug
in it and is not properly wrapped with sig_on(), sig_off().
Python will now terminate.
------------------------------------------------------------------------
/Users/zscherr/sage/src/bin/sage-python: line 2: 78812 Bus error: 10
sage -python "$@"
I haven't tested on any other platforms, but for what it's worth I have
Catalina 10.15.7 with Xcode 12.
Thanks,
Zach
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