1112732 - \0 is the only valid numeric escape sequence in strict mode / template strings

Status: RESOLVED FIXED

(Core :: JavaScript Engine, defect)

Description

[Caitlin Potter [:caitp]]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/600.2.5 (KHTML, like Gecko) Version/8.0.2 Safari/600.2.5

Steps to reproduce:

http://jsfiddle.net/r3oycs9c/ (This works correctly in JSC, fails in V8 and SM)


Actual results:

SM will only produce a SyntaxError if the string appears to be an octal literal


Expected results:

SM should produce a SyntaxError for each tested case.

Reason:

There is no valid production for any numeric escape sequence that does not match `\ 0 [lookahead ∉ DecimalDigit]` --- \9 or \8 do not match CharacterEscapeSequence.

Comment 1

[Caitlin Potter [:caitp]]

https://bugs.ecmascript.org/show_bug.cgi?id=3212 might change this

Comment 2

[ziyunfei]

Related discussion: https://bugs.ecmascript.org/show_bug.cgi?id=3477

Comment 3

[Matthew Gaudet (he/him) [:mgaudet]]

I think this is fixed.