compile.c, parse.y: private op assign

* compile.c (iseq_compile_each), parse.y (new_attr_op_assign_gen):
  allow op assign to a private attribute.
  [ruby-core:62949] [Bug #9907]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46365 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 2 deletions

diff --git a/parse.y b/parse.y
index d2076a8d6d..a9f7d5db82 100644
--- a/parse.y
+++ b/parse.y
@@ -1206,7 +1206,7 @@ stmt		: keyword_alias fitem {lex_state = EXPR_FNAME;} fitem
 			else if ($5 == tANDOP) {
 			    $5 = 1;
 			}
-			$$ = NEW_OP_ASGN1($1, $5, args);
+			$$ = NEW_OP_ASGN1(attr_receiver($1), $5, args);
 			fixpos($$, $1);
 		    /*%
 			$$ = dispatch2(aref_field, $1, escape_Qundef($3));
@@ -1998,7 +1998,7 @@ arg		: lhs '=' arg
 			else if ($5 == tANDOP) {
 			    $5 = 1;
 			}
-			$$ = NEW_OP_ASGN1($1, $5, args);
+			$$ = NEW_OP_ASGN1(attr_receiver($1), $5, args);
 			fixpos($$, $1);
 		    /*%
 			$1 = dispatch2(aref_field, $1, escape_Qundef($3));
@@ -9650,6 +9650,7 @@ new_attr_op_assign_gen(struct parser_params *parser, NODE *lhs, ID attr, ID op,
     else if (op == tANDOP) {
 	op = 1;
     }
+    lhs = attr_receiver(lhs);
     asgn = NEW_OP_ASGN2(lhs, attr, op, rhs);
     fixpos(asgn, lhs);
     return asgn;