Fix another site where a stack-allocated character was treated as a...

src/interpreter-irregexp.cc

 // Copyright 2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 33 matching lines @@
 
 
 static bool BackRefMatchesNoCase(int from,
                                  int current,
                                  int len,
                                  Vector<const uc16> subject) {
   for (int i = 0; i < len; i++) {
     unibrow::uchar old_char = subject[from++];
     unibrow::uchar new_char = subject[current++];
     if (old_char == new_char) continue;
-    interp_canonicalize.get(old_char, '\0', &old_char);
-    interp_canonicalize.get(new_char, '\0', &new_char);
-    if (old_char != new_char) {
+    unibrow::uchar old_string[1] = { old_char };
+    unibrow::uchar new_string[1] = { new_char };
+    interp_canonicalize.get(old_char, '\0', old_string);
+    interp_canonicalize.get(new_char, '\0', new_string);
+    if (old_string[0] != new_string[0]) {
       return false;
     }
   }
   return true;
 }
 
 
 static bool BackRefMatchesNoCase(int from,
                                  int current,
                                  int len,
@@ skipping 567 matching lines @@
     if (start_position != 0) previous_char = subject_vector[start_position - 1];
     return RawMatch(code_base,
                     subject_vector,
                     registers,
                     start_position,
                     previous_char);
   }
 }
 
 } }  // namespace v8::internal