compile.c: try to convert in massign `for`

* compile.c (compile_for_masgn): try to convert to an Array if an
  element of massign `for` is not an Array.
  [ruby-core:84931] [Bug #14374]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62073 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 3 deletions

diff --git a/compile.c b/compile.c
index 0585c294c1..4365a177b4 100644
--- a/compile.c
+++ b/compile.c
@@ -5040,7 +5040,7 @@ static int
 compile_for_masgn(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
 {
     /* massign to var in "for"
-     * args.length == 1 && Array === (tmp = args[0]) ? tmp : args
+     * (args.length == 1 && Array.try_convert(args[0])) || args
      */
     const int line = nd_line(node);
     const NODE *var = node->nd_var;
@@ -5056,8 +5056,9 @@ compile_for_masgn(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const nod
     ADD_INSN1(ret, line, putobject, INT2FIX(0));
     ADD_CALL(ret, line, idAREF, INT2FIX(1));
     ADD_INSN1(ret, line, putobject, rb_cArray);
-    ADD_INSN1(ret, line, topn, INT2FIX(1));
-    ADD_CALL(ret, line, idEqq, INT2FIX(1));
+    ADD_INSN(ret, line, swap);
+    ADD_CALL(ret, line, rb_intern("try_convert"), INT2FIX(1));
+    ADD_INSN(ret, line, dup);
     ADD_INSNL(ret, line, branchunless, not_ary);
     ADD_INSN(ret, line, swap);
     ADD_LABEL(ret, not_ary);