[Python-bugs-list] [ python-Bugs-416526 ] Regular expression tests: SEGV on Mac OS

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Bugs item #416526, was updated on 2001-04-16 14:09
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Category: Regular Expressions
Group: Platform-specific
Status: Open
Resolution: None
>Priority: 7
Submitted By: Nobody/Anonymous (nobody)
>Assigned to: Fredrik Lundh (effbot)
Summary: Regular expression tests: SEGV on Mac OS

Initial Comment:
The regular expression regression tests 'test_re' 
causes a SEGV failure on Mac OS X version 10.0.1 
when using Python 2.1c2 (and earlier). This is 
caused by the test trying to recurse 50,000 levels 
deep.

Workaround: A workaround is to limit how deep the 
regular expression library can recurse (this is 
already done for Win32). This can be achieved by 
changing file './Modules/_sre.c' using the following 
patch:

--- ./orig/_sre.c   Sun Apr 15 19:00:58 2001
+++ ./new/_sre.c    Mon Apr 16 21:39:29 2001
@@ -75,6 +75,9 @@
    Win64 (MS_WIN64), Linux64 (__LP64__), 
Monterey (64-bit AIX) (_LP64) */
 /* FIXME: maybe the limit should be 40000 / 
sizeof(void*) ? */
 #define USE_RECURSION_LIMIT 7500
+#elif defined(__APPLE_CC__)
+/* Apple 'cc' compiler eg. for Mac OS X */
+#define USE_RECURSION_LIMIT 4000
 #else
 #define USE_RECURSION_LIMIT 10000
 #endif


----------------------------------------------------------------------

Comment By: Dan Wolfe (dkwolfe)
Date: 2001-04-17 16:52

Message:
Logged In: YES 
user_id=80173

Instead of relying on a compiler variable, we should probably 
set a environment variable as part of the ./configure and use 
that to determine when to reduce the USE_RECURSION_LIMIT.


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You can respond by visiting: 
http://sourceforge.net/tracker/?func=detail&atid=105470&aid=416526&group_id=5470