# Version d940b47(https://github.com/WebKit/WebKit-http/commit/d940b477848884f63752d25491d9dd0b9d3ccb2d) # Testcase1: // Will throw an SyntaxError function func() { if (1) { function o() {} var o = 1; } } # Testcase2: // Will not throw an SyntaxError if (1) { function o() {}; var o = 1; } # Description In both of the above examples, an variable 'o' declaration error occurred, however Testcase1 throws an exception and Testcase2 doesn't. I've tried other engines(such as V8, SpiderMonkey), and they all throw SyntaxError, So i suspect it's a bug of jsc. Please let me know the result whether this is a bug or not. Looking forward to your reply, thanks! 😆