Hackery to narrow down an intermittent crash

include/stdexec/__detail/__basic_sender.hpp

@@ -275,6 +275,20 @@ namespace STDEXEC
       return __sexpr_impl<_Tag>::__get_env(__index_t(), const_cast<_State const &>(__state_));
     }
 
+    constexpr explicit __rcvr(_State& __state) noexcept
+      : __state_(__state)
+    {}
+
+    STDEXEC_ATTRIBUTE(always_inline)
+    constexpr __rcvr(__rcvr const & __other) noexcept
+      : __state_(__other.__state_)
+    {}
+
+    STDEXEC_ATTRIBUTE(always_inline)
+    constexpr __rcvr(__rcvr&& __other) noexcept
+      : __state_(__other.__state_)
+    {}
+
     _State& __state_;
   };
 

test/CMakeLists.txt

@@ -23,68 +23,7 @@ function(add_compile_diagnostics TARGET)
 endfunction()
 
 set(stdexec_test_sources
-    test_main.cpp
-    stdexec/cpos/test_cpo_bulk.cpp
-    stdexec/cpos/test_cpo_receiver.cpp
-    stdexec/cpos/test_cpo_start.cpp
-    stdexec/cpos/test_cpo_connect.cpp
-    stdexec/cpos/test_cpo_connect_awaitable.cpp
-    stdexec/cpos/test_cpo_schedule.cpp
-    stdexec/cpos/test_cpo_upon_error.cpp
-    stdexec/cpos/test_cpo_upon_stopped.cpp
-    stdexec/concepts/test_concept_scheduler.cpp
-    stdexec/concepts/test_concepts_receiver.cpp
-    stdexec/concepts/test_concept_operation_state.cpp
-    stdexec/concepts/test_concepts_sender.cpp
-    stdexec/concepts/test_concepts_stop_tokens.cpp
-    stdexec/concepts/test_concepts_scope_association.cpp
-    stdexec/concepts/test_concepts_scope_token.cpp
-    stdexec/concepts/test_awaitables.cpp
-    stdexec/algos/factories/test_just.cpp
-    stdexec/algos/factories/test_transfer_just.cpp
-    stdexec/algos/factories/test_just_error.cpp
-    stdexec/algos/factories/test_just_stopped.cpp
-    stdexec/algos/factories/test_read.cpp
-    stdexec/algos/factories/test_schedule.cpp
-    stdexec/algos/adaptors/test_associate.cpp
-    stdexec/algos/adaptors/test_starts_on.cpp
-    stdexec/algos/adaptors/test_on.cpp
-    stdexec/algos/adaptors/test_on2.cpp
-    stdexec/algos/adaptors/test_on3.cpp
-    stdexec/algos/adaptors/test_continues_on.cpp
-    stdexec/algos/adaptors/test_finally.cpp
-    stdexec/algos/adaptors/test_then.cpp
-    stdexec/algos/adaptors/test_upon_error.cpp
-    stdexec/algos/adaptors/test_upon_stopped.cpp
-    stdexec/algos/adaptors/test_let_value.cpp
-    stdexec/algos/adaptors/test_let_error.cpp
-    stdexec/algos/adaptors/test_let_stopped.cpp
-    stdexec/algos/adaptors/test_bulk.cpp
-    stdexec/algos/adaptors/test_when_all.cpp
-    stdexec/algos/adaptors/test_transfer_when_all.cpp
-    stdexec/algos/adaptors/test_into_variant.cpp
-    stdexec/algos/adaptors/test_sequence.cpp
-    stdexec/algos/adaptors/test_stopped_as_optional.cpp
-    stdexec/algos/adaptors/test_stopped_as_error.cpp
     stdexec/algos/adaptors/test_write_env.cpp
-    stdexec/algos/adaptors/test_stop_when.cpp
-    stdexec/algos/adaptors/test_spawn_future.cpp
-    stdexec/algos/consumers/test_sync_wait.cpp
-    stdexec/algos/consumers/test_spawn.cpp
-    stdexec/detail/test_any.cpp
-    stdexec/detail/test_common_domain.cpp
-    stdexec/detail/test_completion_signatures.cpp
-    stdexec/detail/test_demangle.cpp
-    stdexec/detail/test_utility.cpp
-    stdexec/detail/test_intrusive_mpsc_queue.cpp
-    stdexec/schedulers/test_task_scheduler.cpp
-    stdexec/schedulers/test_parallel_scheduler.cpp
-    stdexec/queries/test_env.cpp
-    stdexec/queries/test_get_forward_progress_guarantee.cpp
-    stdexec/queries/test_get_completion_behavior.cpp
-    stdexec/queries/test_forwarding_queries.cpp
-    stdexec/types/test_task.cpp
-    stdexec/types/test_counting_scopes.cpp
     )
 
 add_library(common_test_settings INTERFACE)
@@ -94,7 +33,6 @@ set_target_properties(common_test_settings PROPERTIES
     CXX_EXTENSIONS OFF
     MSVC_DEBUG_INFORMATION_FORMAT Embedded
     )
-target_include_directories(common_test_settings INTERFACE "${CMAKE_CURRENT_LIST_DIR}")
 target_compile_definitions(common_test_settings INTERFACE
     STDEXEC_NAMESPACE=std::execution
     $<$<PLATFORM_ID:Windows>:NOMINMAX>
@@ -104,93 +42,12 @@ target_compile_options(common_test_settings INTERFACE
     $<$<CXX_COMPILER_ID:GNU>:-Wno-maybe-uninitialized> # warnings being emitted from stdlib headers, why?
     $<$<CXX_COMPILER_ID:Clang>:-Wno-gnu-line-marker>
     )
-target_link_libraries(common_test_settings INTERFACE $<TARGET_NAME_IF_EXISTS:TBB::tbb>)
-# target_compile_definitions(
-#     common_test_settings INTERFACE
-#     $<$<NOT:$<AND:$<CXX_COMPILER_ID:NVHPC>,$<COMPILE_LANGUAGE:CXX>>>:STDEXEC_ENABLE_EXTRA_TYPE_CHECKING>)
 
 add_executable(test.stdexec ${stdexec_test_sources})
 add_compile_diagnostics(test.stdexec)
 target_link_libraries(test.stdexec
     PUBLIC
     STDEXEC::stdexec
     stdexec_executable_flags
-    Catch2::Catch2WithMain
     PRIVATE
     common_test_settings)
-
-if(STDEXEC_BUILD_PARALLEL_SCHEDULER)
-  add_executable(test.parallel_scheduler_replacement
-                 test_main.cpp
-                 stdexec/schedulers/test_parallel_scheduler_replacement.cpp)
-  add_compile_diagnostics(test.parallel_scheduler_replacement)
-  target_link_libraries(test.parallel_scheduler_replacement
-      PUBLIC
-      STDEXEC::stdexec
-      STDEXEC::parallel_scheduler
-      stdexec_executable_flags
-      Catch2::Catch2WithMain
-      PRIVATE
-      common_test_settings)
-endif()
-
-add_executable(test.scratch test_main.cpp test_scratch.cpp)
-add_compile_diagnostics(test.scratch)
-target_link_libraries(test.scratch
-    PUBLIC
-    STDEXEC::stdexec
-    $<TARGET_NAME_IF_EXISTS:STDEXEC::tbbexec>
-    stdexec_executable_flags
-    Catch2::Catch2WithMain
-    PRIVATE
-    common_test_settings)
-
-# Discover the Catch2 test built by the application
-include(${Catch2_SOURCE_DIR}/extras/Catch.cmake)
-
-# For testing that builds fail as expected
-include(${icm_SOURCE_DIR}/icm_build_failure_testing.cmake)
-
-catch_discover_tests(test.stdexec PROPERTIES TIMEOUT 30)
-
-catch_discover_tests(test.scratch PROPERTIES TIMEOUT 30)
-
-if(STDEXEC_BUILD_PARALLEL_SCHEDULER AND NOT STDEXEC_ENABLE_CUDA)
-    catch_discover_tests(test.parallel_scheduler_replacement PROPERTIES TIMEOUT 30)
-endif()
-
-add_subdirectory(exec)
-
-if(STDEXEC_ENABLE_CUDA)
-    add_subdirectory(nvexec)
-endif()
-
-# build failure tests: tests which parse a source file for an expected error
-# message
-icm_add_build_failure_test(
-    NAME test_let_fail1
-    TARGET test_let_fail1
-    SOURCES PARSE stdexec/algos/adaptors/test_let_fail1.cpp
-    LIBRARIES stdexec
-    FOLDER test
-)
-
-icm_add_build_failure_test(
-    NAME test_then_fail1
-    TARGET test_then_fail1
-    SOURCES PARSE stdexec/algos/adaptors/test_then_fail1.cpp
-    LIBRARIES stdexec
-    FOLDER test
-)
-
-if(STDEXEC_BUILD_RELACY_TESTS)
-    add_subdirectory(rrd)
-endif()
-
-# # Adding multiple tests with a glob
-# icm_glob_build_failure_tests(
-#     PATTERN *_fail*.cpp
-#     LIBRARIES stdexec
-#     PREFIX stdexec
-#     FOLDER test/stdexec/algos/adaptors
-# )