Issue #20736 has been updated by mame (Yusuke Endoh). https://github.com/ruby/ruby/pull/11626 ---------------------------------------- Bug #20736: prism emits wrong warnings in syntax-error code https://bugs.ruby-lang.org/issues/20736#change-109778 * Author: mame (Yusuke Endoh) * Status: Feedback * Assignee: kddnewton (Kevin Newton) * Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN ---------------------------------------- ``` $ ./local/bin/ruby -w --parser=parse.y -e 'begin eval("0a"); rescue SyntaxError; end' $ ./local/bin/ruby -w --parser=prism -e 'begin eval("0a"); rescue SyntaxError; end' (eval at -e:1):1: warning: possibly useless use of a literal in void context ``` ``` $ ./local/bin/ruby -w --parser=parse.y -e 'begin eval("+a.0"); rescue SyntaxError; end' $ ./local/bin/ruby -w --parser=prism -e 'begin eval("+a.0"); rescue SyntaxError; end' (eval at -e:1):1: warning: possibly useless use of +@ in void context ``` -- https://bugs.ruby-lang.org/