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chromium/chromium-94.0.4606.71-Parti...

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diff -up chromium-94.0.4606.71/base/allocator/allocator_shim_default_dispatch_to_partition_alloc.cc.nullptr-fix chromium-94.0.4606.71/base/allocator/allocator_shim_default_dispatch_to_partition_alloc.cc
--- chromium-94.0.4606.71/base/allocator/allocator_shim_default_dispatch_to_partition_alloc.cc.nullptr-fix 2021-10-06 15:23:11.590602162 -0400
+++ chromium-94.0.4606.71/base/allocator/allocator_shim_default_dispatch_to_partition_alloc.cc 2021-10-06 15:29:21.508762249 -0400
@@ -380,7 +380,10 @@ void PartitionFree(const AllocatorDispat
size_t PartitionGetSizeEstimate(const AllocatorDispatch*,
void* address,
void* context) {
- PA_DCHECK(address);
+ // This is used to implement malloc_usable_size(3). Per its man page, "if ptr
+ // is NULL, 0 is returned".
+ if (!address)
+ return 0;
#if defined(OS_APPLE)
if (!base::IsManagedByPartitionAlloc(address)) {