[Mono-bugs] [Bug 78278][Nor] New - '*' Regex quantifier limited to 65535 characters

bugzilla-daemon at bugzilla.ximian.com bugzilla-daemon at bugzilla.ximian.com
Wed May 3 13:12:17 EDT 2006

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Changed by thelsdj at gmail.com.


--- shadow/78278	2006-05-03 13:12:17.000000000 -0400
+++ shadow/78278.tmp.16824	2006-05-03 13:12:17.000000000 -0400
@@ -0,0 +1,55 @@
+Bug#: 78278
+Product: Mono: Class Libraries
+Version: unspecified
+OS Details: 
+Status: NEW   
+Priority: Normal
+Component: System
+AssignedTo: mono-bugs at ximian.com                            
+ReportedBy: thelsdj at gmail.com               
+QAContact: mono-bugs at ximian.com
+TargetMilestone: ---
+Summary: '*' Regex quantifier limited to 65535 characters
+Description of Problem:
+The '*' quantifier is limited to 65535 characters, if you try to match more
+than that with it it fails.
+This also causes * to match a second shorter match if available when it
+should be greedy and match the longer.
+Steps to reproduce the problem:
+1. Create string 'xaaa...aaax' (where there are 65536 a's)
+2. Try to match it against this regex: 'xa*x'
+Actual Results:
+Match fails.
+Expected Results:
+Match should succeed.
+1. Create string 'xaaaaxaaa...aaay (where second group of a's is 65531
+characters long)
+2. Try to match against this regex: 'x.*y'
+Actual Results:
+The match value is from the second x forward
+Expected Results:
+Match value should be from first character to last character
+How often does this happen? 
+Additional Information:
+With either of these test cases you can see if you make the long string of
+a's shorter by one character these match successfully.

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