Issue 534864: profiling with xml parsing asserts (original) (raw)
Issue534864
Created on 2002-03-25 21:15 by ainsinga, last changed 2022-04-10 16:05 by admin. This issue is now closed.
| Files | |||
|---|---|---|---|
| File name | Uploaded | Description | Edit |
| profilexmlcrash.txt | ainsinga,2002-03-25 21:19 | ||
| traceback.txt | tim.peters,2002-07-01 15:55 | A failing run under CVS on Windows | |
| expat.diff | loewis,2002-07-02 07:05 |
| Messages (15) | ||
|---|---|---|
| msg9974 - (view) | Author: Aron K. Insinga (ainsinga) | Date: 2002-03-25 21:15 |
| I'm getting a 'bad call' assertion error when using the profiler when parsing XML. (It works ok without the profiler, and if I don't call SAXparser.parse it doesn't happen.) Python 2.2 (#1, Dec 23 2001, 09:30:32) [GCC 2.96 20000731 (Red Hat Linux 7.1 2.96-98)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import t4crash start document end document >>> import profile >>> t4crash.test() start document end document >>> profile.run('t4crash.test()') start document Traceback (most recent call last): File "", line 1, in ? File "/usr/lib/python2.2/profile.py", line 71, in run prof = prof.run(statement) File "/usr/lib/python2.2/profile.py", line 404, in run return self.runctx(cmd, dict, dict) File "/usr/lib/python2.2/profile.py", line 410, in runctx exec cmd in globals, locals File "", line 1, in ? File "t4crash.py", line 46, in test main(files) File "t4crash.py", line 39, in main SAXparser.parse(fileName) File "/var/tmp/python2-2.2-root/usr/lib/python2.2/xml/sax/expatreader.py", line 53, in parse File "/var/tmp/python2-2.2-root/usr/lib/python2.2/xml/sax/xmlreader.py", line 123, in parse File "/var/tmp/python2-2.2-root/usr/lib/python2.2/xml/sax/expatreader.py", line 106, in feed File "/var/tmp/python2-2.2-root/usr/lib/python2.2/xml/sax/expatreader.py", line 179, in start_element File "/usr/lib/python2.2/profile.py", line 214, in trace_dispatch_i if self.dispatch[event](self, frame,t): File "/usr/lib/python2.2/profile.py", line 260, in trace_dispatch_call assert rframe.f_back is frame.f_back, ("Bad call", rfn, AssertionError: ('Bad call', ('/var/tmp/python2-2.2-root/usr/lib/python2.2/xml/sax/expatreader.py', 95, 'feed'), <frame object at 0x81d5454>, <frame object at 0x81c82e4>, <frame object at 0x81d50b4>, <frame object at 0x81d5284>) >>> [ainsinga@ainsinga index_xml]$ cat t4crash.py #!/usr/bin/env python2 # t4crash.py by Aron K. Insinga (aron.insinga@av.com) 25-Mar-2002 import xml.sax import sys import string import re class ContentHandler(xml.sax.ContentHandler): """ Handle callbacks from the SAX XML parser. """ def __init__(selfy): pass def setDocumentLocator(self, locator): pass def startDocument(self): print 'start document' def endDocument(self): print 'end document' def startElement(self, name, attrs): pass def endElement(self, name): pass def main(files): SAXparser = xml.sax.make_parser() chand = ContentHandler() SAXparser.setContentHandler(chand) try: for fileName in files: SAXparser.parse(fileName) except xml.sax.SAXParseException: sys.stderr.write("%s; processing aborted\n" % (xml.sax.SAXParseException)) sys.exit(1) def test(): files = ['doc0.xml'] main(files) test() [ainsinga@ainsinga index_xml]$ cat doc0.xml Gettysburg Address Four score and seven years ago... |
grep -i py [ainsinga@ainsinga index_xml]$uname -a Linux ainsinga 2.4.7-10 #1 Thu Sep 6 17:27:27 EDT 2001 i686 unknown [ainsinga@ainsinga index_xml]$ | |
| msg9975 - (view) | Author: Aron K. Insinga (ainsinga) | Date: 2002-03-25 21:19 |
| Logged In: YES user_id=496408 attached is the sample program (which ought to have indenting preserved!) | ||
| msg9976 - (view) | Author: Tim Peters (tim.peters) *  |
Date: 2002-03-25 22:27 |
| Logged In: YES user_id=31435 Assigned to Fred. | ||
| msg9977 - (view) | Author: Martin v. Löwis (loewis) * |
Date: 2002-03-27 12:30 |
| Logged In: YES user_id=21627 I can't reproduce the crash, with 2.3a0. | ||
| msg9978 - (view) | Author: Martin v. Löwis (loewis) * |
Date: 2002-07-01 05:55 |
| Logged In: YES user_id=21627 I can't reproduce it with the Python 2.2 that ships with SuSE 8.0, either. | ||
| msg9979 - (view) | Author: Tim Peters (tim.peters) * |
Date: 2002-07-01 15:55 |
| Logged In: YES user_id=31435 I reproduced this with current CVS Python on Windows; see attached traceback.txt, which shows a screen dump of the offending interactive session. | ||
| msg9980 - (view) | Author: Andrew P. Lentvorski, Jr. (andrewl) | Date: 2002-07-01 22:57 |
| Logged In: YES user_id=28733 There is another filing on this problem at: http://mail.python.org/pipermail/xml-sig/2002-April/007632.html Also, I reproduced this on another FreeBSD box today as well. andrewl@taz:andrewl$ python Python 2.2.1 (#1, May 27 2002, 16:42:22) [GCC 2.95.3 20010315 (release) [FreeBSD]] on freebsd4 -a | ||
| msg9981 - (view) | Author: Andrew P. Lentvorski, Jr. (andrewl) | Date: 2002-07-02 00:01 |
| Logged In: YES user_id=28733 Here is a session log for a much more self-contained regression file (xmltest.py): andrewl@taz:andrewl$ python Python 2.2.1 (#1, May 27 2002, 16:42:22) [GCC 2.95.3 20010315 (release) [FreeBSD]] on freebsd4 Type "help", "copyright", "credits" or "license" for more information. >>> import profile >>> import xmltest >>> profile.run('xmltest.main()') Traceback (most recent call last): File "", line 1, in ? File "/usr/local/lib/python2.2/profile.py", line 71, in run prof = prof.run(statement) File "/usr/local/lib/python2.2/profile.py", line 404, in run return self.runctx(cmd, dict, dict) File "/usr/local/lib/python2.2/profile.py", line 410, in runctx exec cmd in globals, locals File "", line 1, in ? File "xmltest.py", line 24, in main xml.sax.parseString(testxml, chand) File "/usr/local/lib/python2.2/xml/sax/__init__.py", line 49, in parseString parser.parse(inpsrc) File "/usr/local/lib/python2.2/xml/sax/expatreader.py", line 90, in parse xmlreader.IncrementalParser.parse(self, source) File "/usr/local/lib/python2.2/xml/sax/xmlreader.py", line 123, in parse self.feed(buffer) File "/usr/local/lib/python2.2/xml/sax/expatreader.py", line 143, in feed self._parser.Parse(data, isFinal) File "/usr/local/lib/python2.2/xml/sax/expatreader.py", line 216, in start_element def start_element(self, name, attrs): File "/usr/local/lib/python2.2/profile.py", line 214, in trace_dispatch_i if self.dispatch[event](self, frame,t): File "/usr/local/lib/python2.2/profile.py", line 260, in trace_dispatch_call assert rframe.f_back is frame.f_back, ("Bad call", rfn, AssertionError: ('Bad call', ('/usr/local/lib/python2.2/xml/sax/expatreader.py', 132, 'feed'), <frame object at 0x81a880c>, <frame object at 0x81a840c>, <frame object at 0x81bb60c>, <frame object at 0x81a8a0c>) | ||
| msg9982 - (view) | Author: Andrew P. Lentvorski, Jr. (andrewl) | Date: 2002-07-02 00:13 |
| Logged In: YES user_id=28733 The xmltest.py program follows since I appear to be too stupid to figure out how to attach a file to a bug report on SourceForge. -a #!/usr/bin/env python import xml.sax testxml = \ """ """ class ContentHandler(xml.sax.ContentHandler): """ Handle callbacks from the SAX XML parser. """ def __init__(self): pass def startElement(self, name, attrs): print "start element" def endElement(self, name): print "end element" def main(): chand = ContentHandler() xml.sax.parseString(testxml, chand) if __name__ == "__main__": main() | ||
| msg9983 - (view) | Author: Martin v. Löwis (loewis) * |
Date: 2002-07-02 07:05 |
| Logged In: YES user_id=21627 Attached is a patch that fixes the problem. | ||
| msg9984 - (view) | Author: Andrew P. Lentvorski, Jr. (andrewl) | Date: 2002-08-01 08:57 |
| Logged In: YES user_id=28733 I took a quick look in the browsable CVS repository, and the diff to expat.c doesn't seem to be committed. Is there something further that I need to do so that this bug can get closed? -a | ||
| msg9985 - (view) | Author: Martin v. Löwis (loewis) * |
Date: 2002-08-01 10:56 |
| Logged In: YES user_id=21627 Confirming that the patch solves the problem for you would help. | ||
| msg9986 - (view) | Author: Guido van Rossum (gvanrossum) * |
Date: 2002-08-02 20:06 |
| Logged In: YES user_id=6380 It solves the isolated test case submitted by Andrew P. Lentvorski to python-dev on July 1, so I propose to check this in. | ||
| msg9987 - (view) | Author: Andrew P. Lentvorski, Jr. (andrewl) | Date: 2002-08-02 21:21 |
| Logged In: YES user_id=28733 I didn't realize you were waiting for confirmation from me directly. Preliminary runs look like the problem is fixed. Please commit the patch and mark this bug as closed. | ||
| msg9988 - (view) | Author: Martin v. Löwis (loewis) * |
Date: 2002-08-04 08:27 |
| Logged In: YES user_id=21627 Committed as pyexpat.c 2.72 and 2.57.6.1. |
| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-10 16:05:09 | admin | set | github: 36330 |
| 2002-03-25 21:15:27 | ainsinga | create |