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Fix access to uninitialized memory compute-sanitizer flagged issues #12098

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Merged
oleksandr-pavlyk merged 1 commit into from
Oct 21, 2026
+3 −5
Merged

Fix access to uninitialized memory compute-sanitizer flagged issues #12098

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8 changes: 3 additions & 5 deletions cub/test/catch2_test_device_set_operations_pairs_env.cu
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Original file line number Diff line number Diff line change
Expand Up @@ -135,12 +135,10 @@ void check_pairs(const c2h::device_vector<int>& keys1,
const int num = num_selected[0];
REQUIRE(num == static_cast<int>(reference.size()));

c2h::host_vector<int> keys_out_h(keys_out);
keys_out_h.resize(num);
c2h::host_vector<int> keys_out_h(keys_out.begin(), keys_out.begin() + num);
REQUIRE(reference == keys_out_h);

c2h::host_vector<int> values_out_h(values_out);
values_out_h.resize(num);
c2h::host_vector<int> values_out_h(values_out.begin(), values_out.begin() + num);
for (int i = 0; i < num; ++i)
{
const int key = keys_out_h[i];
Expand Down Expand Up @@ -329,7 +327,7 @@ CUB_TEST("DeviceSetOps pairs can be tuned", "[set_ops][device]", CUB_SMALL, key_
auto keys_out = c2h::device_vector<int>(keys1.size() + keys2.size(), thrust::default_init);
auto vals_out = c2h::device_vector<int>(keys1.size() + keys2.size(), thrust::default_init);
auto num = c2h::device_vector<int>(1, thrust::default_init);
auto d_block_size = c2h::device_vector<unsigned int>(1, thrust::default_init);
auto d_block_size = c2h::device_vector<unsigned int>(1, 0u);

const block_size_extracting_op<::cuda::std::less<>> block_size_check{thrust::raw_pointer_cast(d_block_size.data())};
auto env = ::cuda::execution::tune(set_ops_tuning<target_block_size>{});
Expand Down
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