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Diffstat (limited to 'third_party/base/allocator/partition_allocator/partition_alloc.cc')
-rw-r--r--third_party/base/allocator/partition_allocator/partition_alloc.cc9
1 files changed, 7 insertions, 2 deletions
diff --git a/third_party/base/allocator/partition_allocator/partition_alloc.cc b/third_party/base/allocator/partition_allocator/partition_alloc.cc
index 9523e78d46..a33d7f1d13 100644
--- a/third_party/base/allocator/partition_allocator/partition_alloc.cc
+++ b/third_party/base/allocator/partition_allocator/partition_alloc.cc
@@ -1061,8 +1061,13 @@ void* PartitionReallocGeneric(PartitionRootGeneric* root,
// determine it is a win.
if (actual_new_size == actual_old_size) {
// Trying to allocate a block of size new_size would give us a block of
- // the same size as the one we've already got, so no point in doing
- // anything here.
+ // the same size as the one we've already got, so re-use the allocation
+ // after updating statistics (and cookies, if present).
+ PartitionPageSetRawSize(page, PartitionCookieSizeAdjustAdd(new_size));
+#if DCHECK_IS_ON()
+ // Write a new trailing cookie.
+ PartitionCookieWriteValue(static_cast<char*>(ptr) + new_size);
+#endif
return ptr;
}