compile.c: hash must be paired

* compile.c (compile_array_): hash elements must be paired even for
  literal elements.  [ruby-dev:46658] [Bug #7466]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37991 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 1 deletions

diff --git a/compile.c b/compile.c
index ebb58bba8d..3ad7192ca0 100644
--- a/compile.c
+++ b/compile.c
@@ -2379,11 +2379,15 @@ compile_array_(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE* node_root,
 			rb_ary_push(ary, node->nd_head->nd_lit);
 			node = node->nd_next;
 		    }
-		    while (node && nd_type(node->nd_head) == NODE_LIT) {
+		    while (node && nd_type(node->nd_head) == NODE_LIT &&
+			   node->nd_next && nd_type(node->nd_next->nd_head) == NODE_LIT) {
+			rb_ary_push(ary, node->nd_head->nd_lit);
+			node = node->nd_next;
 			rb_ary_push(ary, node->nd_head->nd_lit);
 			node = node->nd_next;
 			len++;
 		    }
+		    assert(RARRAY_LEN(ary) % 2 == 0);
 
 		    OBJ_FREEZE(ary);