SemiSpace::AssertValidRange should use NewSpacePage::FromLimit for start.

src/spaces.cc

 // Copyright 2011 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 1301 matching lines @@
     }
     CHECK(page->IsFlagSet(MemoryChunk::SCAN_ON_SCAVENGE));
     CHECK(page->prev_page()->next_page() == page);
     page = page->next_page();
   }
 }
 
 
 void SemiSpace::AssertValidRange(Address start, Address end) {
   // Addresses belong to same semi-space
-  NewSpacePage* page = NewSpacePage::FromAddress(start);
+  NewSpacePage* page = NewSpacePage::FromLimit(start);
   NewSpacePage* end_page = NewSpacePage::FromLimit(end);
   SemiSpace* space = page->semi_space();
   CHECK_EQ(space, end_page->semi_space());
   // Start address is before end address, either on same page,
   // or end address is on a later page in the linked list of
   // semi-space pages.
   if (page == end_page) {
     CHECK(start <= end);
   } else {
     while (page != end_page) {
@@ skipping 1193 matching lines @@
     object->ShortPrint();
     PrintF("\n");
   }
   printf(" --------------------------------------\n");
   printf(" Marked: %x, LiveCount: %x\n", mark_size, LiveBytes());
 }
 
 #endif  // DEBUG
 
 } }  // namespace v8::internal