Always update raw pointers when handling interrupts inside RegExp code.

src/regexp-macro-assembler.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_REGEXP_MACRO_ASSEMBLER_H_
 #define V8_REGEXP_MACRO_ASSEMBLER_H_
 
 #include "src/ast.h"
 
 namespace v8 {
@@ skipping 197 matching lines @@
   // Called from RegExp if the backtrack stack limit is hit.
   // Tries to expand the stack. Returns the new stack-pointer if
   // successful, and updates the stack_top address, or returns 0 if unable
   // to grow the stack.
   // This function must not trigger a garbage collection.
   static Address GrowStack(Address stack_pointer, Address* stack_top,
                            Isolate* isolate);
 
   static const byte* StringCharacterPosition(String* subject, int start_index);
 
+  static int CheckStackGuardState(Isolate* isolate, int start_index,
+                                  bool is_direct_call, Address* return_address,
+                                  Code* re_code, String** subject,
+                                  const byte** input_start,
+                                  const byte** input_end);
+
   // Byte map of one byte characters with a 0xff if the character is a word
   // character (digit, letter or underscore) and 0x00 otherwise.
   // Used by generated RegExp code.
   static const byte word_character_map[256];
 
   static Address word_character_map_address() {
     return const_cast<Address>(&word_character_map[0]);
   }
 
   static Result Execute(Code* code,
                         String* input,
                         int start_offset,
                         const byte* input_start,
                         const byte* input_end,
                         int* output,
                         int output_size,
                         Isolate* isolate);
 };
 
 #endif  // V8_INTERPRETED_REGEXP
 
 } }  // namespace v8::internal
 
 #endif  // V8_REGEXP_MACRO_ASSEMBLER_H_