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Created on 2001-03-16 22:01 by complex, last changed 2022-04-10 16:03 by admin. This issue is now closed.
| Files | ||||
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| File name | Uploaded | Description | Edit | |
| compile_patch | moshez, 2001-03-18 11:15 | Patch to fix the bug | ||
| Messages (7) | |||
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| msg3889 - (view) | Author: Viktor Ferenczi (complex) | Date: 2001-03-16 22:01 | |
Hi! Python 2.1b1 dumps core when executing the following statement: print [[y for y in [x,x+1]] for x in [1,3]] (Should print: [[1,2],[3,4]]) The problem may be related to variable scope resolving code, because python reports "unknown scope for _[2] in ?(0)" before dumping core. This bug makes impossible to use a list comprehension as the expression field of another one. -Complex- |
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| msg3890 - (view) | Author: Michael Hudson (mwh)  |
Date: 2001-03-17 17:55 | |
Logged In: YES user_id=6656 this is a dup of [ #406049 ] crash on nested listcomps so someone with appropriate privilege should mark it as such. |
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| msg3891 - (view) | Author: Tim Peters (tim.peters) * |
Date: 2001-03-18 06:14 | |
Logged In: YES user_id=31435 Assigned to Jeremy. Boosted priority. Note that mwh says this is a dup of 406049 (but this is clearly not the same test case). Whatever, I confirmed that this specific case still crashes. Fatal Python error: unknown scope for _[2] in ?(0) in <stdin> |
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| msg3892 - (view) | Author: Michael Hudson (mwh) |
Date: 2001-03-18 10:34 | |
Logged In: YES user_id=6656 Well, no, it's not the same test case, but it is the same problem. It also doesn't crash if you apply patch #406076, which I wrote to fix #406049. |
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| msg3893 - (view) | Author: Moshe Zadka (moshez)  |
Date: 2001-03-18 11:15 | |
Logged In: YES user_id=11645 Here is a patch to fix the problem. |
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| msg3894 - (view) | Author: Jeremy Hylton (jhylton) |
Date: 2001-03-19 19:49 | |
Logged In: YES user_id=31392 This patch is incorrect. The root of the problem is that the symbol table does not have the correct entry for the nested list comp. The solution must address the symbol table problem. |
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| msg3895 - (view) | Author: Jeremy Hylton (jhylton) |
Date: 2001-03-19 20:43 | |
Logged In: YES user_id=31392 Fixed in rev. 2.187 of compile.c |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-10 16:03:52 | admin | set | github: 34167 |
| 2001-03-16 22:01:48 | complex | create | |