diff -purN a/bc/bc.y b/bc/bc.y
--- a/bc/bc.y	2006-09-04 21:39:31.000000000 -0500
+++ b/bc/bc.y	2016-09-09 13:02:41.476000000 -0500
@@ -569,6 +569,7 @@ expression		:  named_expression ASSIGN_O
 				    generate (">");
 				  break;
 				}
+			        free($2);	
 			    }
 			| expression '+' expression
 			    {
diff -purN a/bc/util.c b/bc/util.c
--- a/bc/util.c	2006-09-04 21:39:31.000000000 -0500
+++ b/bc/util.c	2016-09-09 13:02:41.476000000 -0500
@@ -602,8 +602,7 @@ lookup (name, namekind)
     case FUNCTDEF:
       if (id->f_name != 0)
 	{
-	  if (namekind != FUNCT)
-	    free(name);
+	  free(name);
 	  /* Check to see if we are redefining a math lib function. */ 
 	  if (use_math && namekind == FUNCTDEF && id->f_name <= 6)
 	    id->f_name = next_func++;