24291 2009-03-02 07:44:05 -0800 REGRESSION (r38635): Single line JavaScript comment prevents HTML button click handler execution 2009-03-10 15:49:21 -0700 1 1 1 Unclassified WebKit WebCore JavaScript 528+ (Nightly build) Mac OS X 10.5 RESOLVED FIXED HasReduction, InRadar, Regression P1 Normal --- 1 mihnea zwarich ap ddkilzer sam zwarich oldest_to_newest 111828 0 mihnea 2009-03-02 07:44:05 -0800 Hello, If i add a single line JavaScript comment at the end of a HTML button handler for click, the handler is not executed. I was able to reproduce the problem using the following sample: <HTML> <BODY> <input type="button" id="myButtonTest" value="Works" onClick="alert('OnClick Button1');" /> <input type="button" id="myButtonTest1" value="Doesn'tWork" onClick="alert('OnClick Button2');//;" /> </BODY> </HTML> While clicking on button "Works" displays the alert, clicking on the button "Doesn'tWork" does not bring up the alert message. Removing the //; comment or replacing it with /**/ solves the problem. I was able to reproduce the problem using: -> WebKit 41357 running on Mac Leopard -> Safari 4 both on Mac Leopard/Win -> Google Chrome on Win FF3/Opera 9.63 do not have the problem in both Mac/Win environments. Regards, Mihnea 111995 1 ap 2009-03-03 08:37:20 -0800 Confirmed as a regression from 3.1.2. 111996 2 ap 2009-03-03 08:40:01 -0800 Sorry, from 3.2.1 112123 3 zwarich 2009-03-03 19:33:49 -0800 As expected, there is an unreported parsing error when attempting to parse the event handler. I'll try to use Bison's debugging to figure out why. 112124 4 zwarich 2009-03-03 20:04:59 -0800 This regressed between r38592 and r38645. I suspect it was caused by r38635: http://trac.webkit.org/changeset/38635 112126 5 zwarich 2009-03-03 20:50:27 -0800 This is the problem, at the top of constructFunction() in FunctionConstructor.cpp: UString program; if (args.isEmpty()) program = "(function(){})"; else if (args.size() == 1) program = "(function(){" + args.at(exec, 0).toString(exec) + "})"; else { program = "(function(" + args.at(exec, 0).toString(exec); for (size_t i = 1; i < args.size() - 1; i++) program += "," + args.at(exec, i).toString(exec); program += "){" + args.at(exec, args.size() - 1).toString(exec) + "})"; } This is possibly incorrect when anything in the middle has a single-line comment. The fix is to add newlines after substitutions. I'll assign this to myself. 112129 6 28255 zwarich 2009-03-03 21:17:18 -0800 Created attachment 28255 Reduction If the test passes, an alert is displayed with the message PASS. 112159 7 28258 zwarich 2009-03-04 00:50:43 -0800 Created attachment 28258 Proposed patch (without tests) Here's the fix. It needs a ChangeLog and some tests, for both the event handler and "new Function(...)" cases. I should be able to get to it by tomorrow evening. 112978 8 zwarich 2009-03-10 04:09:24 -0700 *** Bug 24482 has been marked as a duplicate of this bug. *** 112981 9 ap 2009-03-10 04:24:13 -0700 Per the duplicate, this is <rdar://problem/6663472>. 113058 10 28450 zwarich 2009-03-10 14:30:40 -0700 Created attachment 28450 Proposed patch 113059 11 28450 ggaren 2009-03-10 14:34:06 -0700 Comment on attachment 28450 Proposed patch r=me 113073 12 zwarich 2009-03-10 15:49:21 -0700 Landed in r41565. 28255 2009-03-03 21:17:18 -0800 2009-03-03 21:17:18 -0800 Reduction reduction.html text/html 56 zwarich PGh0bWw+Cjxib2R5IG9ubG9hZD0iYWxlcnQoJ1BBU1MnKTsvLyI+CjwvYm9keT4KPC9odG1sPgo= 28258 2009-03-04 00:50:43 -0800 2009-03-10 14:30:40 -0700 Proposed patch (without tests) comment.diff text/plain 907 zwarich SW5kZXg6IHJ1bnRpbWUvRnVuY3Rpb25Db25zdHJ1Y3Rvci5jcHAKPT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PQotLS0gcnVu 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