[ruby-core:94214] [Ruby master Bug#8279] Single-line rescue parsing

From: nobu@...
Date: 2019-08-09 05:57:47 UTC
List: ruby-core #94214
Issue #8279 has been updated by nobu (Nobuyoshi Nakada).


Thank you, it seems fine. I've missed this at all.

----------------------------------------
Bug #8279: Single-line rescue parsing
https://bugs.ruby-lang.org/issues/8279#change-80512

* Author: dunric (David Unric)
* Status: Open
* Priority: Normal
* Assignee: matz (Yukihiro Matsumoto)
* Target version: 
* ruby -v: 2.0.0p0
* Backport: 
----------------------------------------
Hi,

there seems to be a bug in parser for single-line rescue statement. It fails in case of multiple assignment statements, keeping operator precedence vs. simple assignment etc.

obj = expression rescue objval
# parsed as
obj = (expression rescue objval) 

obj1, obj2 = expression rescue [objval1, objval2]
# parsed as
(obj1, obj2 = expression) rescue [objval1, objval2]

obj += expression rescue objval
# parsed as
obj += (expression rescue objval)

obj = obj + expression rescue objval
# parsed as
obj = (obj + expression) rescue objval


There is already a thread about this issue on ruby-forum.com, even Matz himself is aware and did gave a nod to this problem http://www.ruby-forum.com/topic/152260#671711 , though nothing was done to fix it yet.

I've tried to report about this problem once (http://bugs.ruby-lang.org/issues/8239) but it was ignored for no known reason.


---Files--------------------------------
massign-rescue-modifier-8279.patch (2.08 KB)


-- 
https://bugs.ruby-lang.org/

Unsubscribe: <mailto:ruby-core-request@ruby-lang.org?subject=unsubscribe>
<http://lists.ruby-lang.org/cgi-bin/mailman/options/ruby-core>

In This Thread

Prev Next