Bug 200070 – Regular expression bug of javascriptCore: String search method invalid

• Status: NEW
• Component: JavaScriptCore

#Testcase:
1 var func = function() {
2     var reg = /(\w*)+=/;
3     var str1 = '4anything4654sASD:language=';
4     // var str2 = '4any4654sASD:language=';
5     print(str1.search(reg));
6     // print(str2.search(reg));
7 };
8 
9 func();

#Command:
./webkit/WebKitBuild/Release/bin/jsc testcase.js

#Output:
-1

#Expected output:
18

#Description:
When executing the above testcase, the expected output should be “18” according to ECMAScript-262 standard. However, JavaScriptCore outputs -1 while other JS engines such as V8, SpiderMonkey output “18”. In addition, when I comment str1(line 3) and use str2 (line 4), JavaScriptCore outputs “13”. So I suspect that it’s a bug of JavaScriptCore.

[Radar WebKit Bug Importer]

<rdar://problem/53502691>