* insns.def: fix to invoke nil.to_splat on NODE_ARGSCAT.

  [ruby-dev:31138].
* bootstraptest/test_literal.rb: add tests for above.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@12707 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 10 insertions, 16 deletions

diff --git a/insns.def b/insns.def
index 63f1ca1153..51e5272ee9 100644
--- a/insns.def
+++ b/insns.def
@@ -555,27 +555,21 @@ concatarray
 (VALUE ary)
 {
     VALUE ary2 = ary2st;
+    VALUE tmp1 = rb_check_convert_type(ary1, T_ARRAY, "Array", "to_splat");
+    VALUE tmp2 = rb_check_convert_type(ary2, T_ARRAY, "Array", "to_splat");
 
-    if (ary2 == Qnil) {
-	ary = ary1;
+    if (NIL_P(tmp1)) {
+	tmp1 = rb_ary_new3(1, ary1);
     }
-    else {
-	VALUE tmp1 = rb_check_convert_type(ary1, T_ARRAY, "Array", "to_splat");
-	VALUE tmp2 = rb_check_convert_type(ary2, T_ARRAY, "Array", "to_splat");
 
-	if (NIL_P(tmp1)) {
-	    tmp1 = rb_ary_new3(1, ary1);
-	}
-	
-	if (NIL_P(tmp2)) {
-	    tmp2 = rb_ary_new3(1, ary2);
-	}
+    if (NIL_P(tmp2)) {
+	tmp2 = rb_ary_new3(1, ary2);
+    }
 
-	if (tmp1 == ary1) {
-	    tmp1 = rb_ary_dup(ary1);
-	}
-	ary = rb_ary_concat(tmp1, tmp2);
+    if (tmp1 == ary1) {
+	tmp1 = rb_ary_dup(ary1);
     }
+    ary = rb_ary_concat(tmp1, tmp2);
 }
 
 /**