Fix direct call to eval from strict mode code.

JerryScript-DCO-1.0-Signed-off-by: Ruben Ayrapetyan [email protected]

Author: Ruben Ayrapetyan

jerry-core/ecma/operations/ecma-eval.cpp

@@ -89,8 +89,11 @@ ecma_op_eval_chars_buffer (const ecma_char_t *code_p, /**< code characters buffe
   const opcode_t *opcodes_p;
   bool is_syntax_correct;
 
+  bool is_strict_call = (is_direct && is_called_from_strict_mode_code);
+
   is_syntax_correct = parser_parse_eval ((const char *) code_p,
                                          code_buffer_size,
+                                         is_strict_call,
                                          &opcodes_p);
 
   if (!is_syntax_correct)
@@ -108,7 +111,7 @@ ecma_op_eval_chars_buffer (const ecma_char_t *code_p, /**< code characters buffe
       is_strict_prologue = true;
     }
 
-    bool is_strict = (is_strict_prologue || (is_direct && is_called_from_strict_mode_code));
+    bool is_strict = (is_strict_call || is_strict_prologue);
 
     ecma_value_t this_binding;
     ecma_object_t *lex_env_p;

jerry-core/parser/js/parser.cpp

@@ -3063,6 +3063,8 @@ parser_parse_program (const char *source_p, /**< source code buffer */
                       size_t source_size, /**< source code size in bytes */
                       bool in_function, /**< flag indicating if we are parsing body of a function */
                       bool in_eval, /**< flag indicating if we are parsing body of eval code */
+                      bool is_strict, /**< flag, indicating whether current code
+                                       *   inherited strict mode from code of an outer scope */
                       const opcode_t **out_opcodes_p) /**< out: generated byte-code array
                                                        *  (in case there were no syntax errors) */
 {
@@ -3089,6 +3091,7 @@ parser_parse_program (const char *source_p, /**< source code buffer */
   STACK_INIT (scopes);
   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 ();
@@ -3166,7 +3169,7 @@ parser_parse_script (const char *source, /**< source script */
                      const opcode_t **opcodes_p) /**< out: generated byte-code array
                                                   *  (in case there were no syntax errors) */
 {
-  return parser_parse_program (source, source_size, false, false, opcodes_p);
+  return parser_parse_program (source, source_size, false, false, false, opcodes_p);
 } /* parser_parse_script */
 
 /**
@@ -3178,10 +3181,12 @@ parser_parse_script (const char *source, /**< source script */
 bool
 parser_parse_eval (const char *source, /**< string passed to eval() */
                    size_t source_size, /**< string size in bytes */
+                   bool is_strict, /**< flag, indicating whether eval is called
+                                    *   from strict code in direct mode */
                    const opcode_t **opcodes_p) /**< out: generated byte-code array
                                                 *  (in case there were no syntax errors) */
 {
-  return parser_parse_program (source, source_size, false, true, opcodes_p);
+  return parser_parse_program (source, source_size, false, true, is_strict, opcodes_p);
 } /* parser_parse_eval */
 
 /**
@@ -3207,7 +3212,12 @@ parser_parse_new_function (const char **params, /**< array of arguments of new F
     FIXME ("check parameter's name for syntax errors");
     lit_find_or_create_literal_from_charset ((ecma_char_t *) params[i], (ecma_length_t) strlen (params[i]));
   }
-  return parser_parse_program (params[params_count - 1], strlen (params[params_count - 1]), true, false, out_opcodes_p);
+  return parser_parse_program (params[params_count - 1],
+                               strlen (params[params_count - 1]),
+                               true,
+                               false,
+                               false,
+                               out_opcodes_p);
 } /* parser_parse_new_function */
 
 /**

jerry-core/parser/js/parser.h

@@ -20,7 +20,7 @@
 
 void parser_set_show_opcodes (bool);
 bool parser_parse_script (const char *, size_t, const opcode_t **);
-bool parser_parse_eval (const char *, size_t, const opcode_t **);
+bool parser_parse_eval (const char *, size_t, bool, const opcode_t **);
 bool parser_parse_new_function (const char **, size_t, const opcode_t **);
 
 #endif /* PARSER_H */

tests/jerry/eval.js

@@ -51,6 +51,16 @@ function f2 (global)
  assert (v2 === 'local value');
  assert (typeof (global.v2) === 'undefined');
  assert (r === undefined);
+
+ try
+ {
+   eval ('arguments = 1;');
+   assert (false);
+ }
+ catch (e)
+ {
+   assert (e instanceof SyntaxError);
+ }
 }
 
 f2 (this);