[Python-bugs-list] [ python-Bugs-435026 ] SGI cores on 1.0 / 0
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Thu, 21 Jun 2001 19:52:49 -0700
Bugs item #435026, was updated on 2001-06-20 23:18
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Category: Python Interpreter Core
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Drew Whitehouse (drw900)
Assigned to: Nobody/Anonymous (nobody)
Summary: SGI cores on 1.0 / 0
Initial Comment:
python21 cores evaluating 1.0 / 0 on SGI.
MIPSpro Compilers: Version 7.3.1.1m
SGI_ABI = -n32
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>Comment By: Tim Peters (tim_one)
Date: 2001-06-21 19:52
Message:
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Robert, let us know if you find it! There's always *some*
optimization bug on SGI boxes, but this one is particularly
noxious.
Someone on c.l.py suggested it may be a problem with Python
accessing a double at an unaligned (for the platform)
memory address. They didn't follow up, so I don't know
whether that's the case, but if it is we would consider it
a bug in Python (we try to stick to std C, so if there's an
unaligned access it's a bug in our coding -- but I don't
see anything like that by eyeball).
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Comment By: Robert Minsk (rminsk)
Date: 2001-06-21 19:41
Message:
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Python 2.1 core dumps on any
<float> <operator> <int>
using the 7.3.1.2m compilers with -O2 or greater. If the
file Objects/floatobject.c is compiled with -O1 everything
seems fine. It is core dumping in the macro
CONVERT_TO_DOUBLE. It seems the call stack gets corrupted.
I'm trying to find a workaround besides -O1.
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