Put lexer_init after setjmp in parser_parse_program, as lexer_init could raise an early error.

Related issues: #341

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

jerry-core/parser/js/parser.cpp

@@ -3161,8 +3161,6 @@ parser_parse_program (const jerry_api_char_t *source_p, /**< source code buffer
   jsp_mm_init ();
   jsp_label_init ();
 
-  lexer_init (source_p, source_size, parser_show_opcodes);
-
   serializer_set_show_opcodes (parser_show_opcodes);
   dumper_init ();
   syntax_init ();
@@ -3171,13 +3169,20 @@ parser_parse_program (const jerry_api_char_t *source_p, /**< source code buffer
   STACK_PUSH (scopes, scopes_tree_init (NULL));
   serializer_set_scope (STACK_TOP (scopes));
   scopes_tree_set_strict_mode (STACK_TOP (scopes), is_strict);
-  lexer_set_strict_mode (scopes_tree_strict_mode (STACK_TOP (scopes)));
 
   jmp_buf *syntax_error_label_p = syntax_get_syntax_error_longjmp_label ();
   int r = setjmp (*syntax_error_label_p);
 
   if (r == 0)
   {
+    /*
+     * Note:
+     *      Operations that could raise an early error can be performed only during execution of the block.
+     */
+
+    lexer_init (source_p, source_size, parser_show_opcodes);
+    lexer_set_strict_mode (scopes_tree_strict_mode (STACK_TOP (scopes)));
+
     skip_newlines ();
     parse_source_element_list (true);
 

tests/jerry/regression-test-issue-341.js

@@ -0,0 +1,24 @@
+// Copyright 2015 Samsung Electronics Co., Ltd.
+// Copyright 2015 University of Szeged.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+try
+{
+  eval ('\xbf\x0a\x0a');
+  assert (false);
+}
+catch (e)
+{
+  assert (e instanceof SyntaxError);
+}