[Python-Dev] Unary minus bug (original) (raw)
Neil Schemenauer nas at arctrix.com
Sun Jul 9 22:54:56 CEST 2006
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The bug was reported by Armin in SF #1333982:
the literal -2147483648 (i.e. the value of -sys.maxint-1) gives
a long in 2.5, but an int in <= 2.4.I have a fix but I wonder if it's the right thing to do. I suppose returning a long has the chance of breaking someone code. Here's the test we currently have for a related case:
[...]
# 32-bit machine
all_one_bits = '0xffffffff'
self.assertEqual(eval(all_one_bits), 4294967295L)
self.assertEqual(eval("-" + all_one_bits), -4294967295L)I guess I would add self.assertTrue(isinstance(eval("-2147483648"), int)) to that set of tests.
Neil
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