Gracefully throw an error when parser runs out of memory.

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com

jerry-core/parser/js/js-parser-mem.c

@@ -39,8 +39,9 @@ parser_malloc (parser_context_t *context_p, /**< context */
   void *result;
 
   JERRY_ASSERT (size > 0);
-  result = jmem_heap_alloc_block (size);
-  if (result == 0)
+  result = jmem_heap_alloc_block_null_on_error (size);
+
+  if (result == NULL)
   {
     parser_raise_error (context_p, PARSER_ERR_OUT_OF_MEMORY);
   }

jerry-core/parser/js/js-parser.c

@@ -2241,6 +2241,13 @@ parser_parse_script (const uint8_t *source_p, /**< source code */
 
   if (!*bytecode_data_p)
   {
+    if (parse_error.error == PARSER_ERR_OUT_OF_MEMORY)
+    {
+      /* It is unlikely that memory can be allocated in an out-of-memory
+       * situation. However, a simple value can still be thrown. */
+      return ecma_make_error_value (ecma_make_simple_value (ECMA_SIMPLE_VALUE_NULL));
+    }
+
     return ecma_raise_syntax_error (parser_error_to_string (parse_error.error));
   }