[heap] Enforce size checks in allocation stats.

src/heap/spaces.cc

Index: src/heap/spaces.cc
diff --git a/src/heap/spaces.cc b/src/heap/spaces.cc
index eeaf39aedc6838ffb7d92c91c05d4cadf29dd861..2479709a45750a3a56fdab440fea54f26d6bb5d2 100644
--- a/src/heap/spaces.cc
+++ b/src/heap/spaces.cc
@@ -2707,7 +2707,8 @@ void PagedSpace::PrepareForMarkCompact() {
 
 intptr_t PagedSpace::SizeOfObjects() {
   const intptr_t size = Size() - (limit() - top());
-  DCHECK_GE(size, 0);
+  CHECK(limit() >= top());

[ulan, 2015/11/19 12:36:10]

CHECK_GE

[Hannes Payer (out of office), 2015/11/19 14:24:22]

Done.

+  CHECK_GE(size, 0);
   USE(size);
   return size;
 }