diff --git a/ChangeLog b/ChangeLog
index 2091ce07b5..e8c0e97cb7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+Sat Nov  5 14:17:20 2016  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* parse.y (brace_body, do_body): since cmdarg_stack is saved in
+	  VALUE val, should restore from the same member.  on big-endian
+	  platforms where VALUE is larger than int, it restored 0 in the
+	  upper word.  [ruby-core:77920] [Bug #12900]
+
 Sat Nov  5 13:52:52 2016  Akinori MUSHA  <knu@iDaemons.org>
 
 	* lib/shellwords.rb (Shellwords#shellsplit): Fix the handling of
diff --git a/parse.y b/parse.y
index a5ae823023..54ccc52cc6 100644
--- a/parse.y
+++ b/parse.y
@@ -3751,7 +3751,7 @@ brace_body	: {$<vars>$ = dyna_push();}
 		    {
 			$$ = new_brace_body($3, $4);
 			dyna_pop($<vars>1);
-			CMDARG_SET($<num>2);
+			CMDARG_SET($<val>2);
 		    }
 		;
 
@@ -3761,7 +3761,7 @@ do_body 	: {$<vars>$ = dyna_push();}
 		    {
 			$$ = new_do_body($3, $4);
 			dyna_pop($<vars>1);
-			CMDARG_SET($<num>2);
+			CMDARG_SET($<val>2);
 		    }
 		;