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-rw-r--r--cc/resources/raster_worker_pool.cc2
1 files changed, 2 insertions, 0 deletions
diff --git a/cc/resources/raster_worker_pool.cc b/cc/resources/raster_worker_pool.cc
index 453c729..6a807e6 100644
--- a/cc/resources/raster_worker_pool.cc
+++ b/cc/resources/raster_worker_pool.cc
@@ -66,6 +66,8 @@ class RasterTaskGraphRunner : public internal::TaskGraphRunner,
virtual void Run() OVERRIDE {
// Use picture clone index 0..num_threads.
int picture_clone_index = picture_clone_index_sequence_.GetNext();
+ DCHECK_LE(0, picture_clone_index);
+ DCHECK_GT(RasterWorkerPool::GetNumRasterThreads(), picture_clone_index);
current_tls_.Set(new ThreadLocalState(picture_clone_index));
internal::TaskGraphRunner::Run();