39289 2010-05-18 06:41:22 -0700 Wrong result in case of non-iterative matching of subpatterns in non-greedy cases in YARR Interpreter 2010-05-19 08:21:24 -0700 1 1 1 Unclassified WebKit JavaScriptCore 528+ (Nightly build) All All RESOLVED FIXED P2 Normal --- 0 pvarga webkit-unassigned abecsi barraclough darin ggaren zherczeg zoltan oldest_to_newest 227278 0 pvarga 2010-05-18 06:41:22 -0700 The start of the non-iterative matching of subpatterns isn't stored in case of non-greedy matching. Eg.: print("ab".match(/(a)??b/)); Results: YARR Interpreter: ab, Expected: ab,a 227279 1 56366 pvarga 2010-05-18 06:44:59 -0700 Created attachment 56366 proposed patch 227336 2 56366 darin 2010-05-18 09:21:11 -0700 Comment on attachment 56366 proposed patch Looks like a good code change. But needs a test case to demonstrate at least one regular expression that malfunctions without this and works with it. We don't take patches without test cases unless there's a reason a test case can't be created. 227337 3 darin 2010-05-18 09:23:17 -0700 I see the test case here in the bug report. Now it needs to be added to existing tests in LayoutTests. I suggest putting it into one of the existing tests in the fast/js directory that tests other regular expression cases. And add other similar test cases that are not affected. 227815 4 56489 pvarga 2010-05-19 07:32:58 -0700 Created attachment 56489 proposed patch v2 I fixed the previous change and added a layout test. My previous change caused problems in some test cases and these cases have been added to the layout test. 227819 5 56489 darin 2010-05-19 07:40:28 -0700 Comment on attachment 56489 proposed patch v2 > - output[(subpatternId << 1) + 1] = input.getPos() + term.inputPosition; > + output[(subpatternId << 1)] = input.getPos() + term.inputPosition; I suggest omitting the parentheses here. output[subpatternId << 1] would be easier to read. > + The backtrackParentesesOnceEnd function should store the start position Typo here in the name of the function. 227825 6 56489 pvarga 2010-05-19 08:01:51 -0700 Comment on attachment 56489 proposed patch v2 cq+ removed to fix the mentioned issues. 227837 7 abecsi 2010-05-19 08:21:24 -0700 (In reply to comment #6) > (From update of attachment 56489 [details]) > cq+ removed to fix the mentioned issues. Sending JavaScriptCore/ChangeLog Sending JavaScriptCore/yarr/RegexInterpreter.cpp Sending LayoutTests/ChangeLog Adding LayoutTests/fast/js/regexp-non-greedy-parentheses-expected.txt Adding LayoutTests/fast/js/regexp-non-greedy-parentheses.html Adding LayoutTests/fast/js/script-tests/regexp-non-greedy-parentheses.js Transmitting file data ...... Committed revision 59766. Patch landed. 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