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Sporadic STL-ASan-CI x86 AVs #4324

@CaseyCarter

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@CaseyCarter

In STL-ASan-CI runs, seemingly random x86 test cases fail with exit code 3221225477 (0xC0000005) indicating an Access Violation. Let's track sporadic AVs here and see if there's a pattern.

Note that these invalid accesses are not caught and reported by the ASan runtime, so they are presumably uninstrumented. Together with the fact that this is ASan-only and x86-only, I suspect a race in ASan setup or teardown.

This is on no way an exhaustive list: we've missed tracking some, and nearly given up after 2024-08 because they are so frequent. In any case, there seems to be no pattern. It's probably some kind of shutdown race.

Date Toolset PR Test Run
2024-01-13 17.9p2 #4304 (CI) P0896R4_ranges_alg_remove_copy
2024-01-15 17.9p2 #4313 GH_001123_random_cast_out_of_range
2024-01-28 17.9p2 #4341 (CI) P0768R1_spaceship_operator
2024-03-23 17.10p2 #4493 (CI) VSO_0180466_algorithm_overhauls
2024-04-10 17.10p2 #4576 tr1/tests/new
2024-04-13 17.10p3 #4578 (CI) P1023R0_constexpr_for_array_comparisons
2024-04-23 17.10p4 #4599 (CI) P0448R4_spanstream
2024-04-24 17.10p4 #4599 (CI) Dev10_860421_deque_push_back_pop_front
2024-05-03 17.10p4 #4652 libcxx range.iota.view/iterator/ctor.default.pass.cpp
2024-05-20 17.10p4 #4677 (CI) P1135R6_atomic_wait_vista
2024-05-24 17.11p1 #4685 (CI) P2374R4_checked_arithmetic_operations + 2 more
2024-06-12 17.11p2 #4725 GH_001010_filesystem_error_encoding
2024-06-26 17.11p2 #4742 (CI) P2278R4_basic_const_iterator + 1 more
2024-07-09 17.11p3 #4824 libcxx func.bind.bind/invoke_rvalue.pass.cpp + 1 more
2024-07-12 17.11p3 #4819 (CI) Dev09_199123_tr1_mem_fun_abstract_classes
2024-07-21 17.11p3 #4844 (CI) P0355R7_calendars_and_time_zones_dates
2024-07-26 17.11p3 #4862 (CI) Dev10_445289_make_shared + 1 more
2024-07-31 17.11p3 #4870 (CI) P0811R3_midpoint_lerp + 1 more
2024-08-14 17.12p1 #4889 libcxx iterator.range/begin-end.array.pass.cpp + 2 more
2024-08-24 17.12p1 #4910 libcxx char.traits.specializations.wchar_t/eq.pass.cpp
2025-03-11 17.14p2 #5335 Dev11_0000000_quoted
2025-04-17 17.14p3 #5410 P0896R4_views_all
2025-04-30 17.14p3 #5436 (CI) P2286R8_text_formatting_escaping_utf8

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