diff --git a/mysql-test/r/func_misc.result b/mysql-test/r/func_misc.result
index 39bf1470afe..4bd9d0be174 100644
--- a/mysql-test/r/func_misc.result
+++ b/mysql-test/r/func_misc.result
@@ -190,6 +190,22 @@ ERROR 21000: Operand should contain 1 column(s)
 drop table table_26093;
 drop function func_26093_a;
 drop function func_26093_b;
+SELECT NAME_CONST('test', NOW());
+ERROR HY000: Incorrect arguments to NAME_CONST
+SELECT NAME_CONST('test', UPPER('test'));
+ERROR HY000: Incorrect arguments to NAME_CONST
+SELECT NAME_CONST('test', NULL);
+test
+NULL
+SELECT NAME_CONST('test', 1);
+test
+1
+SELECT NAME_CONST('test', 1.0);
+test
+1.0
+SELECT NAME_CONST('test', 'test');
+test
+test
 End of 5.0 tests
 select connection_id() > 0;
 connection_id() > 0
diff --git a/mysql-test/t/func_misc.test b/mysql-test/t/func_misc.test
index 01eff55d1f6..a8715346d0a 100644
--- a/mysql-test/t/func_misc.test
+++ b/mysql-test/t/func_misc.test
@@ -198,6 +198,19 @@ drop table table_26093;
 drop function func_26093_a;
 drop function func_26093_b;
 
+#
+# Bug #30832: Assertion + crash with select name_const('test',now());
+#
+--error ER_WRONG_ARGUMENTS
+SELECT NAME_CONST('test', NOW());
+--error ER_WRONG_ARGUMENTS
+SELECT NAME_CONST('test', UPPER('test'));
+
+SELECT NAME_CONST('test', NULL);
+SELECT NAME_CONST('test', 1);
+SELECT NAME_CONST('test', 1.0);
+SELECT NAME_CONST('test', 'test');
+
 --echo End of 5.0 tests
 
 #
diff --git a/sql/item.h b/sql/item.h
index 655159ab752..2beb4b66fba 100644
--- a/sql/item.h
+++ b/sql/item.h
@@ -1243,6 +1243,8 @@ public:
   Item_name_const(Item *name_arg, Item *val):
     value_item(val), name_item(name_arg)
   {
+    if(!value_item->basic_const_item())
+      my_error(ER_WRONG_ARGUMENTS, MYF(0), "NAME_CONST");
     Item::maybe_null= TRUE;
   }