[JSC] RegExp#lastIndex should handle writable attribute when defining in defineOwnProperty path
https://bugs.webkit.org/show_bug.cgi?id=155093
Reviewed by Filip Pizlo.
Before this patch, `setLastIndex(ExecState* exec, size_t lastIndex)` always overwrites the existing value
regardless of writable attribute.
And when defining RegExp#lastIndex in defineOwnProperty, we need to define the value first
before making the attribute readonly. After changing the writable attribute, we cannot define the value.
* runtime/RegExpObject.cpp:
(JSC::RegExpObject::defineOwnProperty):
* runtime/RegExpObject.h:
(JSC::RegExpObject::setLastIndex):
* tests/stress/regexp-last-index-writable.js: Added.
(shouldBe):
(shouldThrow):
(regExpLastIndex):
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@197640 268f45cc-cd09-0410-ab3c-d52691b4dbfc
4 files changed
