Message 108066 - Python tracker

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In-reply-to
Author	srid
Recipients	r.david.murray, srid
Date	2010年06月17日.21:46:43
SpamBayes Score	0.12699297
Marked as misclassified	No
Message-id	<1276811206.48.0.530486807933.issue9020@psf.upfronthosting.co.za>

Content
I traced the "infinite loop" to tokenizer.c:tok_get around line 1368: while (Py_ISALNUM(c) \|\| c == '_') { c = tok_nextc(tok); } Adding a `printf` statement at the beginning of the loop: printf("tok_get: third while: c = %c (%d) ... Py_ISALNUM=%d\n", c, c, Py_ISALNUM(c)); Output: tok_get: third while: c = � (-1) ... Py_ISALNUM=2 tok_get: third while: c = � (-1) ... Py_ISALNUM=2 tok_get: third while: c = � (-1) ... Py_ISALNUM=2 tok_get: third while: c = � (-1) ... Py_ISALNUM=2 tok_get: third while: c = � (-1) ... Py_ISALNUM=2 tok_get: third while: c = � (-1) ... Py_ISALNUM=2 tok_get: third while: c = � (-1) ... Py_ISALNUM=2 tok_get: third while: c = � (-1) ... Py_ISALNUM=2 [...] I may not spend much time on this bug, unless someone can hint at what might have gone wrong here? As for 2.6-maint, I will find that out sometime this week.

Content

I traced the "infinite loop" to tokenizer.c:tok_get around line 1368:
 while (Py_ISALNUM(c) || c == '_') {
 c = tok_nextc(tok);
 }
Adding a `printf` statement at the beginning of the loop:
 printf("tok_get: third while: c = %c (%d) ... Py_ISALNUM=%d\n", c, c, Py_ISALNUM(c));
Output:
tok_get: third while: c = � (-1) ... Py_ISALNUM=2
tok_get: third while: c = � (-1) ... Py_ISALNUM=2
tok_get: third while: c = � (-1) ... Py_ISALNUM=2
tok_get: third while: c = � (-1) ... Py_ISALNUM=2
tok_get: third while: c = � (-1) ... Py_ISALNUM=2
tok_get: third while: c = � (-1) ... Py_ISALNUM=2
tok_get: third while: c = � (-1) ... Py_ISALNUM=2
tok_get: third while: c = � (-1) ... Py_ISALNUM=2
[...]
I may not spend much time on this bug, unless someone can hint at what might have gone wrong here?
As for 2.6-maint, I will find that out sometime this week.

History
Date	User	Action	Args
2010年06月17日 21:46:46	srid	set	recipients: + srid, r.david.murray
2010年06月17日 21:46:46	srid	set	messageid: <1276811206.48.0.530486807933.issue9020@psf.upfronthosting.co.za>
2010年06月17日 21:46:43	srid	link	issue9020 messages
2010年06月17日 21:46:43	srid	create

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