Status: Untriaged
Owner: ----
New issue 4147 by [email protected]: Regexp.prototype.exec with a frozen
regexp silently fails to update lastIndex instead of throwing
https://code.google.com/p/v8/issues/detail?id=4147
Version: 9633ebabd405c264d33f603f8798c31f59418dcd
OS: Mac
Architecture: x64
What steps will reproduce the problem?
var regex = /0/g;
Object.freeze(regex);
var str = "abc000";
print(JSON.stringify(Object.getOwnPropertyDescriptor(regex, "lastIndex")));
regex.exec(str);
print(JSON.stringify(Object.getOwnPropertyDescriptor(regex, "lastIndex")));
What is the expected output? Exception thrown when
http://people.mozilla.org/~jorendorff/es6-draft.html#sec-regexpbuiltinexec
tries to change the lastIndex property.
What do you see instead? No exception thrown, lastIndex silently not
updated.
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