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Created on 2010-07-07 16:42 by mark.dickinson, last changed 2022-04-11 14:57 by admin. This issue is now closed.
| Messages (2) | |||
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| msg109483 - (view) | Author: Mark Dickinson (mark.dickinson) *  |
Date: 2010-07-07 16:42 | |
_PyFloat_Pack4 does a double-to-float cast, without first checking that the value being converted is within the range of a float. According to C99 6.3.1.5p2, this results in undefined behaviour. It should be fixed (probably via comparison with FLT_MAX before casting.) np_float in the struct module also has this problem. |
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| msg112866 - (view) | Author: Mark Dickinson (mark.dickinson) * |
Date: 2010-08-04 19:09 | |
Closing this as not worth worrying about. This *is* undefined behaviour, but it really doesn't seem to be a problem in practice. (It might have been better for the C standard to describe this as merely implementation-defined.) |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:57:03 | admin | set | github: 53436 |
| 2010-08-04 19:09:29 | mark.dickinson | set | status: open -> closed resolution: wont fix |
| 2010-08-04 19:09:05 | mark.dickinson | set | messages: + msg112866 |
| 2010-07-07 16:42:23 | mark.dickinson | create | |