* array.c (rb_ary_combination): argument check before creating

  Enumerator.

* array.c (rb_ary_permutation): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15750 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 2 deletions

diff --git a/array.c b/array.c
index 7e9dcfa073..41a94783fb 100644
--- a/array.c
+++ b/array.c
@@ -3030,8 +3030,8 @@ rb_ary_permutation(int argc, VALUE *argv, VALUE ary)
     VALUE num;
     long r, n, i;
 
-    RETURN_ENUMERATOR(ary, argc, argv);   /* Return enumerator if no block */
     n = RARRAY_LEN(ary);                  /* Array length */
+    RETURN_ENUMERATOR(ary, argc, argv);   /* Return enumerator if no block */
     rb_scan_args(argc, argv, "01", &num);
     r = NIL_P(num) ? n : NUM2LONG(num);   /* Permutation size from argument */
 
@@ -3111,8 +3111,8 @@ rb_ary_combination(VALUE ary, VALUE num)
 {
     long n, i, len;
 
-    RETURN_ENUMERATOR(ary, 1, &num);
     n = NUM2LONG(num);
+    RETURN_ENUMERATOR(ary, 1, &num);
     len = RARRAY_LEN(ary);
     if (n < 0 || len < n) {
 	/* yield nothing */