Created on 2009-04-15 23:37 by gagenellina, last changed 2010-08-04 23:43 by terry.reedy.
| Messages (4) | |||
|---|---|---|---|
| msg86006 - (view) | Author: Gabriel Genellina (gagenellina) | Date: 2009-04-15 23:37 | |
Originally reported by Juanjo Conti at PyAr: http://blog.gmane.org/gmane.org.user-groups.python.argentina/ day=20090415 Evaluating this expression causes a stack overflow, and the Python interpreter exits abnormally: eval("()" * 30000) 3.0.1, 2.6, 2.5 and current 2.x trunk all fail on Windows; the original reporter was likely using Linux. Some versions may require a larger constant instead of 30000. 2.4 isn't affected; it raises a "TypeError: 'tuple' object is not callable" as expected, even for extremely long sequences. Alberto Bertogli said: inside eval, symtable_visit_expr() (Python/ symtable.c) is called recursively (thru the VISIT/VISIT_SEQ macros), eventually taking all stack space. |
|||
| msg86008 - (view) | Author: Benjamin Peterson (benjamin.peterson) *  |
Date: 2009-04-15 23:51 | |
This is a pathological case. I suppose we have to add a recursion counter to the compiler struct. |
|||
| msg99785 - (view) | Author: Amaury Forgeot d'Arc (amaury.forgeotdarc) * |
Date: 2010-02-22 16:56 | |
Another case from issue7985: eval('l'+'[0]'*999999) |
|||
| msg112925 - (view) | Author: Terry J. Reedy (terry.reedy) * |
Date: 2010-08-04 23:43 | |
On 3.1.2, WinXP, I immediately get TypeError: 'tuple' object is not callable so this seems to have been fixed for 3.x. If released 2.7 is ok, we can close this. |
|||
| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2010-08-04 23:43:16 | terry.reedy | set | nosy:
+ terry.reedy messages: + msg112925 versions: - Python 2.6, Python 2.5, Python 3.0 |
| 2010-02-22 16:56:42 | amaury.forgeotdarc | set | nosy:
+ amaury.forgeotdarc messages: + msg99785 |
| 2010-02-22 16:56:38 | amaury.forgeotdarc | link | issue7985 superseder |
| 2009-04-15 23:51:22 | benjamin.peterson | set | priority: low nosy: + benjamin.peterson messages: + msg86008 |
| 2009-04-15 23:37:36 | gagenellina | create | |