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deps: v8: fix potential segfault in profiler #15498

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deps: v8: fix potential segfault in profiler #15498

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7 changes: 5 additions & 2 deletions deps/v8/src/profiler/sampling-heap-profiler.h
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Original file line number Diff line number Diff line change
Expand Up @@ -172,8 +172,11 @@ class SamplingAllocationObserver : public AllocationObserver {
void Step(int bytes_allocated, Address soon_object, size_t size) override {
USE(heap_);
DCHECK(heap_->gc_state() == Heap::NOT_IN_GC);
DCHECK(soon_object);
profiler_->SampleObject(soon_object, size);
if (soon_object) {
// TODO(ofrobots): it would be better to sample the next object rather
// than skipping this sample epoch if soon_object happens to be null.
profiler_->SampleObject(soon_object, size);
}
}

intptr_t GetNextStepSize() override { return GetNextSampleInterval(rate_); }
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