`std::execution`, the standard C++ framework for asynchronous and parallel programming.
This report summarizes scanner evidence for NVIDIA/stdexec, a C++ project with 2,455 GitHub stars. SynthScan examined 108,461 lines of code across 444 source files, recording 497 pattern matches distributed across 7 syntactic categories. The legacy adjusted pattern signal is 4.9 (Low pattern signal); it is not an authorship estimate.
Use the findings to ask whether maintainers can explain intent, verify dependencies, simplify unnecessary scaffolding, and focus review effort. Risk Payload v1 adds ownership, supply-chain, over-engineering, and review-effort vectors when available. These are prompts for human verification, not probabilities, security findings, or measured maintenance costs.
Use each vector to guide manual verification of the underlying findings.
Can maintainers explain intent, assumptions, and trade-offs? 476 finding(s).
Are imports declared and package/API names verified? 5 finding(s).
Are wrappers, guards, and repeated structures necessary? 16 finding(s).
Which changes need focused human review? 497 finding(s).
This chart tracks the legacy adjusted pattern score across scan runs. Changes can reflect source changes, scan coverage, or detector/scoring versions; they do not measure AI adoption or prove that a team refactored code. Compare runs only when their scoring versions are compatible. The dashed line tracks the raw pattern-hit count.
Groups findings by configured severity weight. Severity is not a confidence estimate, security rating, or proof that a package is missing. Verify imports against the project's manifests and inspect each finding in its local design context.
This horizontal bar chart shows where configured pattern scores accumulate across directories. Treat the bars as locations to inspect, not as evidence of authorship or code quality. Use the file-level findings to decide whether a directory needs a focused ownership, dependency, complexity, or review check.
The scanner identified 497 distinct pattern matches across 7 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a detector match to inspect in context. Expand any category row to inspect the individual file paths, line numbers, code snippets, and the lexical context (CODE, COMMENT, or STRING) in which each match was detected.
Reading the findings table: The Severity column indicates the configured finding weight (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — legacy comment-context matches receive a ×1.5 score weight. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier under the legacy scoring model.
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | CMakeLists.txt | 161 | # * Main library targets ----------------------------------------------------- | COMMENT |
| LOW | MAINTAINERS.md | 61 | #include <stdexec/execution.hpp> | COMMENT |
| LOW | test/CMakeLists.txt | 1 | # ============================================================================= | COMMENT |
| LOW | test/CMakeLists.txt | 181 | if(STDEXEC_BUILD_PARALLEL_SCHEDULER AND NOT STDEXEC_ENABLE_CUDA) | COMMENT |
| LOW | test/nvexec/CMakeLists.txt | 1 | # ============================================================================= | COMMENT |
| LOW | test/nvexec/test_main.cpp | 1 | #define CATCH_CONFIG_MAIN | COMMENT |
| LOW | test/exec/test_completion_signatures.cpp | 81 | == completion_signatures<set_error_t(float), set_value_t(int)>{}); | COMMENT |
| LOW | test/exec/CMakeLists.txt | 1 | # ============================================================================= | COMMENT |
| LOW | test/exec/test_repeat_until.cpp | 21 | COMMENT | |
| LOW | test/exec/test_scheduler_concept.cpp | 21 | #include <exec/reschedule.hpp> | COMMENT |
| LOW | test/exec/test_static_thread_pool.cpp | 21 | #include <stdexec/execution.hpp> | COMMENT |
| LOW | test/exec/test_trampoline_scheduler.cpp | 61 | } | COMMENT |
| LOW | test/exec/test_windows_thread_pool_context.cpp | 21 | #include <stdexec/execution.hpp> | COMMENT |
| LOW | test/exec/test_windows_thread_pool_context.cpp | 81 | .value(); | COMMENT |
| LOW | test/exec/test_windows_thread_pool_context.cpp | 121 | } | COMMENT |
| LOW | test/exec/test_windows_thread_pool_context.cpp | 161 | COMMENT | |
| LOW | test/exec/asio/CMakeLists.txt | 1 | # SPDX-FileCopyrightText: Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES. | COMMENT |
| LOW | test/exec/asio/test_completion_token.cpp | 21 | COMMENT | |
| LOW | test/exec/tbb/CMakeLists.txt | 1 | # SPDX-FileCopyrightText: Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES. | COMMENT |
| LOW | test/exec/async_scope/test_spawn_future.cpp | 321 | // (void)snd; | COMMENT |
| LOW | test/exec/async_scope/test_spawn_future.cpp | 481 | // catch(int error) | COMMENT |
| LOW | test/exec/sequence/test_merge_each_threaded.cpp | 21 | #include "exec/sequence/merge.hpp" | COMMENT |
| LOW | test/exec/sequence/test_merge_each.cpp | 21 | #include "exec/sequence/merge.hpp" | COMMENT |
| LOW | test/exec/sequence/test_transform_each.cpp | 21 | #include "exec/sequence/empty_sequence.hpp" | COMMENT |
| LOW | test/exec/sequence/test_merge.cpp | 21 | #include "exec/sequence.hpp" | COMMENT |
| LOW | test/exec/sequence/test_sequence_any_sender.cpp | 21 | // computation in __seq::__sndr passes the first sender type through | COMMENT |
| LOW | test/exec/taskflow/CMakeLists.txt | 1 | # SPDX-FileCopyrightText: Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES. | COMMENT |
| LOW | test/test_common/scope_helpers.hpp | 21 | #if STDEXEC_USE_MODULES() | COMMENT |
| LOW | test/test_common/tuple.hpp | 21 | #include <stdexec/__detail/__config.hpp> | COMMENT |
| LOW | test/test_common/require_terminate.hpp | 21 | # include <sys/wait.h> | COMMENT |
| LOW | test/test_common/schedulers.hpp | 21 | #include <test_common/type_helpers.hpp> | COMMENT |
| LOW | test/test_common/receivers.hpp | 21 | #include <stdexec/__detail/__config.hpp> | COMMENT |
| LOW | test/stdexec/types/test_task.cpp | 21 | #if !STDEXEC_NO_STDCPP_COROUTINES() | COMMENT |
| LOW | test/stdexec/algos/adaptors/test_let_value.cpp | 21 | #include <exec/sender_for.hpp> | COMMENT |
| LOW | test/stdexec/algos/adaptors/test_spawn_future.cpp | 21 | #include <exec/static_thread_pool.hpp> | COMMENT |
| LOW | test/stdexec/algos/adaptors/test_let_error.cpp | 21 | #include <exec/sender_for.hpp> | COMMENT |
| LOW | test/stdexec/algos/adaptors/test_bulk.cpp | 21 | #include <exec/static_thread_pool.hpp> | COMMENT |
| LOW | test/stdexec/detail/test_any_allocator.cpp | 21 | COMMENT | |
| LOW | …etail/verify_parallel_scheduler_default_impl_entry.cpp | 21 | // is otherwise only exercised when STDEXEC_BUILD_PARALLEL_SCHEDULER is | COMMENT |
| LOW | test/stdexec/concepts/test_concepts_receiver.cpp | 1 | // /* | COMMENT |
| LOW | test/stdexec/schedulers/test_parallel_scheduler.cpp | 21 | #include <exec/async_scope.hpp> | COMMENT |
| LOW | include/._clangd_helper_file.cpp | 21 | // current dir, subdirs, and parent dirs for nearby translation units. It sorts | COMMENT |
| LOW | include/exec/static_thread_pool.hpp | 21 | COMMENT | |
| LOW | include/exec/static_thread_pool.hpp | 41 | # include <compare> | COMMENT |
| LOW | include/exec/static_thread_pool.hpp | 81 | struct BECAUSE_THERE_IS_NO_STATIC_THREAD_POOL_SCHEDULER_IN_THE_ENVIRONMENT; | COMMENT |
| LOW | include/exec/start_detached.hpp | 141 | template <class _Sender, class _Env> | COMMENT |
| LOW | include/exec/start_detached.hpp | 161 | //! work that should be *tracked* by a scope (so the scope can be joined | COMMENT |
| LOW | include/exec/start_detached.hpp | 181 | //! complete via @c set_error: there is no caller to deliver the error | COMMENT |
| LOW | include/exec/libdispatch_queue.hpp | 21 | # include <stdexec/execution.hpp> | COMMENT |
| LOW | include/exec/libdispatch_queue.hpp | 601 | # endif // !STDEXEC_USE_MODULES() || defined(STDEXEC_IN_MODULE_PURVIEW) | COMMENT |
| LOW | include/exec/function.hpp | 21 | #include "../stdexec/__detail/__meta.hpp" | COMMENT |
| LOW | include/exec/function.hpp | 41 | // This file defines function<ReturnType(Arguments...)>, which is a type-erased | COMMENT |
| LOW | include/exec/function.hpp | 81 | //! environment. That injection happens in the partial specialization, | COMMENT |
| LOW | include/exec/function.hpp | 321 | //! are no completion domains required by _Attrs that correspond to | COMMENT |
| LOW | include/exec/function.hpp | 521 | COMMENT | |
| LOW | include/exec/function.hpp | 541 | //! sender_tag(Args...), | COMMENT |
| LOW | include/exec/function.hpp | 681 | using type = __function<__sigs, __queries, __attrs, _Args...>; | COMMENT |
| LOW | include/exec/function.hpp | 701 | //! maps (bar, baz) to the specified completions, requiring the specified | COMMENT |
| LOW | include/exec/sequence_senders.hpp | 21 | #if STDEXEC_USE_MODULES() && !defined(STDEXEC_IN_MODULE_PURVIEW) | COMMENT |
| LOW | include/exec/sequence_senders.hpp | 221 | COMMENT | |
| 409 more matches not shown… | ||||
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM | test/CMakeLists.txt | 1 | # ============================================================================= | COMMENT |
| MEDIUM | test/CMakeLists.txt | 15 | # ============================================================================= | COMMENT |
| MEDIUM | test/nvexec/CMakeLists.txt | 1 | # ============================================================================= | COMMENT |
| MEDIUM | test/nvexec/CMakeLists.txt | 15 | # ============================================================================= | COMMENT |
| MEDIUM | test/exec/CMakeLists.txt | 1 | # ============================================================================= | COMMENT |
| MEDIUM | test/exec/CMakeLists.txt | 15 | # ============================================================================= | COMMENT |
| MEDIUM | docs/eelis_link_filter.pl | 1 | #============================================================================= | COMMENT |
| MEDIUM | docs/eelis_link_filter.pl | 15 | #============================================================================= | COMMENT |
| MEDIUM | docs/CMakeLists.txt | 1 | # ============================================================================= | COMMENT |
| MEDIUM | docs/CMakeLists.txt | 15 | # ============================================================================= | COMMENT |
| MEDIUM | docs/source/conf.py | 1 | #============================================================================= | COMMENT |
| MEDIUM | docs/source/conf.py | 15 | #============================================================================= | COMMENT |
| MEDIUM | examples/CMakeLists.txt | 1 | # ============================================================================= | COMMENT |
| MEDIUM | examples/CMakeLists.txt | 15 | # ============================================================================= | COMMENT |
| MEDIUM | examples/nvexec/CMakeLists.txt | 1 | # ============================================================================= | COMMENT |
| MEDIUM | examples/nvexec/CMakeLists.txt | 15 | # ============================================================================= | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM | .github/workflows/test-gcc-11.sh | 11 | # Create a temporary directory to store results between runs | COMMENT |
| MEDIUM | .github/workflows/test-static-checks.sh | 13 | # Create a temporary directory to store results between runs | COMMENT |
| MEDIUM | .github/workflows/test-clang-13.sh | 11 | # Create a temporary directory to store results between runs | COMMENT |
| MEDIUM | .github/workflows/test-clang-12.sh | 11 | # Create a temporary directory to store results between runs | COMMENT |
| MEDIUM | .github/workflows/test-sanitizer.sh | 11 | # Create a temporary directory to store results between runs | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW⚡ | examples/server_theme/on_transfer.cpp | 78 | char const fake_data[] = "Hello, world!"; | CODE |
| LOW⚡ | examples/server_theme/on_transfer.cpp | 79 | size_t sz = sizeof(fake_data) - 1; | CODE |
| LOW⚡ | examples/server_theme/on_transfer.cpp | 81 | std::memcpy(buffer, fake_data, count); | CODE |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM | include/exec/asio/completion_token.hpp | 64 | // The technique used to achieve this is to utilize an unevaluated call | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | conanfile.py | 4 | CODE | |
| LOW | docs/source/conf.py | 25 | CODE |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | test/stdexec/algos/adaptors/test_upon_stopped.cpp | 29 | // TODO: implement upon_stopped | COMMENT |