Fix syntax check for case 'eval' or 'arguments' identifiers are used for name of function in strict mode.

JerryScript-DCO-1.0-Signed-off-by: Ruben Ayrapetyan r.ayrapetyan@samsung.com

jerry-core/parser/js/parser.cpp

@@ -631,6 +631,8 @@ parse_function_declaration (void)
   token_after_newlines_must_be (TOK_NAME);
   const operand name = literal_operand (token_data_as_lit_cp ());
 
+  syntax_check_for_eval_and_arguments_in_strict_mode (name, is_strict_mode (), tok.loc);
+
   skip_newlines ();
   STACK_PUSH (scopes, scopes_tree_init (STACK_TOP (scopes)));
   serializer_set_scope (STACK_TOP (scopes));
@@ -678,6 +680,8 @@ parse_function_expression (void)
   if (token_is (TOK_NAME))
   {
     const operand name = literal_operand (token_data_as_lit_cp ());
+    syntax_check_for_eval_and_arguments_in_strict_mode (name, is_strict_mode (), tok.loc);
+
     skip_newlines ();
     res = parse_argument_list (VARG_FUNC_EXPR, name, NULL, NULL);
   }

tests/jerry/func-decl.js

@@ -23,3 +23,16 @@ assert ((function() {
     }
     return f();
 })() === 'bar');
+
+function check_syntax_error (s) {
+  try {
+    eval (s);
+    assert (false);
+  }
+  catch (e) {
+    assert (e instanceof SyntaxError);
+  }
+}
+
+check_syntax_error ("'use strict'; function arguments () {}");
+check_syntax_error ("'use strict'; var l = function arguments () {}");