Ruby » Ruby master

Bug #13352

Updated by nobu (Nobuyoshi Nakada) about 7 years ago

ruby entered an infinite loop with the following three steps. 

 ~~~ ruby 
 r = /(?=\W)\W?(?:(?:(?:\/\*<)?[\'\"]?([\w_\$]+)[\'\"]?(?:>\*\/\s+this)?|(this))\.(\$scope|json)|([\'\"](?:\$scope|json)[\'\"]))((\.)(inputObjects)|(\.)(spreadSheets)(?:\.[\'\"]?([^\.\'\"\|\s,]+)[\'\"]?|\[[\'\"]?((?:[^\'\"\]\[]*|\[[^\]]*\])*)[\'\"]?\])(\.)(model))\s*(?:\.[\'\"]?([^\.\'\"\|\s,]+)[\'\"]?|\[[\'\"]?((?:[^\'\"\]\[]*|\[[^\]]*\])*)[\'\"]?\])/ 
 txt = ".model |,| 'anController'.$scope.inputObjects['fieldName .../* !! comment ...*/" 
 txt.scan r 
 ~~~ 

 Node.js also falls into an infinite loop. 

 
 ~~~ javascript 
 var r = /(?=\W)\W?(?:(?:(?:\/\*<)?[\'\"]?([\w_\$]+)[\'\"]?(?:>\*\/\s+this)?|(this))\.(\$scope|json)|([\'\"](?:\$scope|json)[\'\"]))((\.)(inputObjects)|(\.)(spreadSheets)(?:\.[\'\"]?([^\.\'\"\|\s,]+)[\'\"]?|\[[\'\"]?((?:[^\'\"\]\[]*|\[[^\]]*\])*)[\'\"]?\])(\.)(model))\s*(?:\.[\'\"]?([^\.\'\"\|\s,]+)[\'\"]?|\[[\'\"]?((?:[^\'\"\]\[]*|\[[^\]]*\])*)[\'\"]?\])/ 
 var txt = ".model |,| 'anController'.$scope.inputObjects['fieldName .../* !! comment ...*/" 

 var s =r.exec (txt) 

 console.log(s) 


 ~~~ 

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