microsoft / microsoft/vscode-cpptools
cpptools-srv crash in class_member_declaration
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Since Sep 22, 2025.
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Description
Hi,
Unfortunately I'm still seeing crashes on MacOS 15.6, running cpptools-srv 1.27.7.0
Here's the crash report:
------------------------------------- Translated Report (Full Report Below) ------------------------------------- Process: cpptools-srv [11157] Path: /Users/USER/*/cpptools-srv Identifier: cpptools-srv Version: 1.27.7.0 Code Type: X86-64 (Native) Parent Process: launchd [1] Responsible: Electron [2919] User ID: 501 Date/Time: 2025-09-22 17:00:00.8055 +0200 OS Version: macOS 15.6.1 (24G90) Report Version: 12 Anonymous UUID: C1C7046E-FA4B-3ED7-1C7F-669E82C84316 Time Awake Since Boot: 11000 seconds System Integrity Protection: enabled Crashed Thread: 6 Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000 Exception Codes: 0x0000000000000001, 0x0000000000000000 Termination Reason: Namespace SIGNAL, Code 11 Segmentation fault: 11 Terminating Process: cpptools-srv [11157] VM Region Info: 0 is not in any region. Bytes before following region: 4294967296 REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL UNUSED SPACE AT START ---> __TEXT 100000000-100ca4000 [ 12.6M] r-x/r-x SM=COW /Users/USER/*/cpptools-srv Thread 0:: Dispatch queue: com.apple.main-thread 0 libsystem_kernel.dylib 0x7ff8174d25c2 __semwait_signal + 10 1 libsystem_c.dylib 0x7ff8173bf26d nanosleep + 199 2 libc++.1.dylib 0x7ff817455f72 std::__1::this_thread::sleep_for(std::__1::chrono::duration<long long, std::__1::ratio<1l, 1000000000l>> const&) + 73 3 cpptools-srv 0x100037a9d void std::__1::this_thread::sleep_for[abi:ne190102]<long long, std::__1::ratio<1l, 1l>>(std::__1::chrono::duration<long long, std::__1::ratio<1l, 1l>> const&) + 109 4 cpptools-srv 0x100037890 RunServer(msvc::process_id_t, char const*) + 592 5 cpptools-srv 0x10003bb5d main + 397 6 dyld 0x7ff81716c530 start + 3056 Thread 1: 0 libsystem_kernel.dylib 0x7ff8174d4822 kevent + 10 1 cpptools-srv 0x1009612af uv__io_poll + 911 2 cpptools-srv 0x1009589b0 uv_run + 704 3 cpptools-srv 0x10090451e msvc::loop_t::run_loop() + 78 4 cpptools-srv 0x100905c20 msvc::thread_t::invoker_t<void (*)(std::__1::shared_ptr<msvc::loop_t>), std::__1::shared_ptr<msvc::loop_t>&>::invoke() + 48 5 cpptools-srv 0x10094bfa4 msvc::thread_helper_t::thread_entry(void*) + 20 6 libsystem_pthread.dylib 0x7ff817511e59 _pthread_start + 115 7 libsystem_pthread.dylib 0x7ff81750d857 thread_start + 15 Thread 2: 0 libsystem_kernel.dylib 0x7ff8174d26f6 __psynch_cvwait + 10 1 libsystem_pthread.dylib 0x7ff817512302 _pthread_cond_wait + 988 2 cpptools-srv 0x100951b14 worker + 580 3 libsystem_pthread.dylib 0x7ff817511e59 _pthread_start + 115 4 libsystem_pthread.dylib 0x7ff81750d857 thread_start + 15 Thread 3: 0 libsystem_kernel.dylib 0x7ff8174d26f6 __psynch_cvwait + 10 1 libsystem_pthread.dylib 0x7ff817512302 _pthread_cond_wait + 988 2 cpptools-srv 0x100951b14 worker + 580 3 libsystem_pthread.dylib 0x7ff817511e59 _pthread_start + 115 4 libsystem_pthread.dylib 0x7ff81750d857 thread_start + 15 Thread 4: 0 libsystem_kernel.dylib 0x7ff8174d26f6 __psynch_cvwait + 10 1 libsystem_pthread.dylib 0x7ff817512302 _pthread_cond_wait + 988 2 cpptools-srv 0x100951b14 worker + 580 3 libsystem_pthread.dylib 0x7ff817511e59 _pthread_start + 115 4 libsystem_pthread.dylib 0x7ff81750d857 thread_start + 15 Thread 5: 0 libsystem_kernel.dylib 0x7ff8174d26f6 __psynch_cvwait + 10 1 libsystem_pthread.dylib 0x7ff817512302 _pthread_cond_wait + 988 2 libc++.1.dylib 0x7ff817454890 std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 18 3 cpptools-srv 0x10080c58f a_compiler_thread::start(edge::query_action_data&) + 271 4 cpptools-srv 0x10080b68e edge::an_edge_translation_unit_impl::reinitialize_without_fallback(bool, snapshot::snapshot_session_t, edge::file_position const&, edge::query_action_data&) + 2718 5 cpptools-srv 0x10080942f edge::an_edge_translation_unit_impl::reinitialize(bool, snapshot::snapshot_session_t, edge::file_position const&, edge::query_action_data&) + 95 6 cpptools-srv 0x1008281e7 edge::translation_unit::initialize(std::__1::shared_ptr<edge::module_loader> const&, int, char const**, char const*, char const*, bool, char const*, snapshot::snapshot_session_t, edge::query_action_data&) + 775 7 cpptools-srv 0x100014a0d edge_intellisense_server_impl::create_translation_unit(snapshot::snapshot_session_t const&) + 637 8 cpptools-srv 0x100010473 edge_intellisense_server_impl::get_translation_unit(snapshot::snapshot_session_t const&, bool, bool) + 515 9 cpptools-srv 0x1000079ef edge_intellisense_server_impl::handle_initialize(std::__1::shared_ptr<edge::file_buffer_host> const&, cpp_intellisense::InitializeRequest const&, snapshot::snapshot_session_t const&) + 8351 10 cpptools-srv 0x1000a2610 cpp_intellisense::server_stub::handle_initialize(msvc::deserializer_t&, msvc::serializer_t&) + 336 11 cpptools-srv 0x1000381b2 msvc::base_channel_t::dispatch_message(std::__1::vector<unsigned char, std::__1::allocator<unsigned char>> const&, std::__1::vector<unsigned char, std::__1::allocator<unsigned char>>&) + 674 12 cpptools-srv 0x1009029a2 msvc::common_channel_t::perform_call(unsigned int, std::__1::vector<unsigned char, std::__1::allocator<unsigned char>> const&) + 66 13 cpptools-srv 0x100951984 worker + 180 14 libsystem_pthread.dylib 0x7ff817511e59 _pthread_start + 115 15 libsystem_pthread.dylib 0x7ff81750d857 thread_start + 15 Thread 6 Crashed: 0 libsystem_kernel.dylib 0x7ff8174d6846 __pthread_kill + 10 1 libsystem_pthread.dylib 0x7ff817511b66 pthread_kill + 259 2 libsystem_c.dylib 0x7ff8173f512a raise + 24 3 cpptools-srv 0x1008b59a3 (anonymous namespace)::reraise_signal(int, crash_handler_data_t*) + 99 4 cpptools-srv 0x1008b5937 crash_handler(int, __siginfo*, void*) + 967 5 libsystem_platform.dylib 0x7ff81754a31d _sigtramp + 29 6 ??? 0x1768 ??? 7 cpptools-srv 0x100131482 class_member_declaration(a_class_def_state*, a_tmpl_decl_state*, an_ms_attribute*, int, int, a_template_param*, int*, a_type**, a_template_instance*, a_template*, a_decl_pos_block*) + 18114 8 cpptools-srv 0x10013a9a3 scan_class_definition(a_type*, a_decl_parse_state*, int, int, int, int, int, int, a_template*, a_decl_pos_block*) + 11139 9 cpptools-srv 0x10070b623 f_instantiate_template_class_full(a_type*, unsigned int*, unsigned int*, int, int*) + 4307 10 cpptools-srv 0x1005e83dc f_is_generalized_identifier_start(long long, a_type*) + 15436 11 cpptools-srv 0x1001e76b3 typename_specifier(a_type**, a_symbol**, int, int, a_decl_parse_state*, a_decl_pos_block*) + 595 12 cpptools-srv 0x1001eb421 decl_specifiers(unsigned long, a_decl_parse_state*, a_decl_pos_block*) + 11537 13 cpptools-srv 0x10012da71 class_member_declaration(a_class_def_state*, a_tmpl_decl_state*, an_ms_attribute*, int, int, a_template_param*, int*, a_type**, a_template_instance*, a_template*, a_decl_pos_block*) + 3249 14 cpptools-srv 0x10013a9a3 scan_class_definition(a_type*, a_decl_parse_state*, int, int, int, int, int, int, a_template*, a_decl_pos_block*) + 11139 15 cpptools-srv 0x10070b623 f_instantiate_template_class_full(a_type*, unsigned int*, unsigned int*, int, int*) + 4307 16 cpptools-srv 0x1005e83dc f_is_generalized_identifier_start(long long, a_type*) + 15436 17 cpptools-srv 0x1001eae0a decl_specifiers(unsigned long, a_decl_parse_state*, a_decl_pos_block*) + 9978 18 cpptools-srv 0x1001a03e7 type_name_full(a_decl_parse_state*) + 247 19 cpptools-srv 0x1001a164a scan_template_type_argument(int*, int) + 154 20 cpptools-srv 0x1005ee640 scan_template_argument_list(a_symbol*, int, int*, long long, long*) + 1968 21 cpptools-srv 0x1005ed156 coalesce_template_class_reference(a_symbol*, long long, int*) + 6086 22 cpptools-srv 0x1005f2ca8 coalesce_template_id(a_symbol*, a_token_kind, unsigned int, long long, int, int*) + 440 23 cpptools-srv 0x1005e5605 f_is_generalized_identifier_start(long long, a_type*) + 3701 24 cpptools-srv 0x1001eae0a decl_specifiers(unsigned long, a_decl_parse_state*, a_decl_pos_block*) + 9978 25 cpptools-srv 0x1001a03e7 type_name_full(a_decl_parse_state*) + 247 26 cpptools-srv 0x1001a164a scan_template_type_argument(int*, int) + 154 27 cpptools-srv 0x1005ee640 scan_template_argument_list(a_symbol*, int, int*, long long, long*) + 1968 28 cpptools-srv 0x1005ed156 coalesce_template_class_reference(a_symbol*, long long, int*) + 6086 29 cpptools-srv 0x1005f2ca8 coalesce_template_id(a_symbol*, a_token_kind, unsigned int, long long, int, int*) + 440 30 cpptools-srv 0x1005e5605 f_is_generalized_identifier_start(long long, a_type*) + 3701 31 cpptools-srv 0x1001eae0a decl_specifiers(unsigned long, a_decl_parse_state*, a_decl_pos_block*) + 9978 32 cpptools-srv 0x1001ae751 scan_nonmember_declaration(a_decl_parse_state*, a_source_range*) + 6641 33 cpptools-srv 0x1001b3dc8 declaration(int, int, int, int, a_param_id*, a_source_range*, a_decl_parse_state*) + 312 34 cpptools-srv 0x1001b9e8e scan_namespace_declaration_list(int) + 414 35 cpptools-srv 0x1001b5c19 namespace_declaration(a_token_kind*, int, int, a_source_position*, a_symbol**) + 7401 36 cpptools-srv 0x1001ad7dd scan_nonmember_declaration(a_decl_parse_state*, a_source_range*) + 2685 37 cpptools-srv 0x1001b3dc8 declaration(int, int, int, int, a_param_id*, a_source_range*, a_decl_parse_state*) + 312 38 cpptools-srv 0x1001b9e8e scan_namespace_declaration_list(int) + 414 39 cpptools-srv 0x1001b9fa0 translation_unit() + 256 40 cpptools-srv 0x100764e42 process_translation_unit(char const*, int, an_exported_template_file*) + 1810 41 cpptools-srv 0x1000f79bd cfe_main(int, char**) + 269 42 cpptools-srv 0x1007bfabe edge_compiler_main(int, char const**) + 10446 43 cpptools-srv 0x10083df38 preparse(int, char const**, a_scout_store*, edge::translation_unit*) + 424 44 cpptools-srv 0x10080c942 a_compiler_thread::compiler_thread_routine(a_compiler_thread*) + 290 45 cpptools-srv 0x10094bfa4 msvc::thread_helper_t::thread_entry(void*) + 20 46 libsystem_pthread.dylib 0x7ff817511e59 _pthread_start + 115 47 libsystem_pthread.dylib 0x7ff81750d857 thread_start + 15 Thread 6 crashed with X86 Thread State (64-bit): rax: 0x0000000000000000 rbx: 0x000000000000000b rcx: 0x000070000ad5f7d8 rdx: 0x0000000000000000 rdi: 0x0000000000001e07 rsi: 0x000000000000000b rbp: 0x000070000ad5f800 rsp: 0x000070000ad5f7d8 r8: 0x000070000ad5f078 r9: 0x0000000000000010 r10: 0x00007ff85911e9c0 r11: 0x0000000000000246 r12: 0x0000000100c91fb9 r13: 0x000070000ad5fe80 r14: 0x0000000000001e07 r15: 0x0000000000000016 rip: 0x00007ff8174d6846 rfl: 0x0000000000000246 cr2: 0x0000000000000000 Logical CPU: 0 Error Code: 0x02000148 Trap Number: 133 Thread 6 instruction stream: 3c a5 64 00 48 8d 15 e5-a5 64 00 b9 4b 06 00 00 <.d.H....d..K... e8 5b e5 62 00 48 89 1d-b4 fb d4 00 48 8b 05 75 .[.b.H......H..u 2f f5 00 48 85 c0 74 12-48 83 b8 90 00 00 00 00 /..H..t.H....... 74 08 48 8b 4d 90 48 89-48 10 48 8b 05 cf db b6 t.H.M.H.H.H..... 00 48 8b 00 48 3b 45 d0-75 69 48 81 c4 c8 00 00 .H..H;E.uiH..... 00 5b 41 5c 41 5d 41 5e-41 5f 5d c3 48 8b 48 78 .[A\A]A^A_].H.Hx [8b]11 3b 15 60 05 d5 00-75 28 48 8b 49 08 48 8b ..;.`...u(H.I.H. <== 95 78 ff ff ff 48 89 4a-08 48 85 c9 0f 84 52 f0 .x...H.J.H....R. ff ff 48 8b 8d 78 ff ff-ff 48 89 41 10 e9 42 f0 ..H..x...H.A..B. ff ff 48 8b 45 90 48 8b-58 68 e8 31 84 3d 00 48 ..H.E.H.Xh.1.=.H 89 83 b0 00 00 00 48 8b-75 90 4c 8b 75 88 e9 21 ......H.u.L.u..! f0 ff ff e8 d2 e2 84 00-0f 1f 84 00 00 00 00 00 ................ Binary Images: 0x100000000 - 0x100ca3fff cpptools-srv (*) <f49d439f-8698-32f9-a7f1-1a671ccaffcb> /Users/USER/*/cpptools-srv 0x7ff8174cf000 - 0x7ff81750bb4f libsystem_kernel.dylib (*) <a0701b73-99d9-31f3-babf-51c65e53ebbd> /usr/lib/system/libsystem_kernel.dylib 0x7ff8173b0000 - 0x7ff817438b37 libsystem_c.dylib (*) <7d811803-63d9-3099-a315-e2aa9faa4a1d> /usr/lib/system/libsystem_c.dylib 0x7ff817439000 - 0x7ff8174b7fff libc++.1.dylib (*) <d5ee1a94-b941-3277-9dfc-cda0d31164e2> /usr/lib/libc++.1.dylib 0x7ff817166000 - 0x7ff8172006c7 dyld (*) <c6e52c5e-d1d2-354c-a4ec-069f8d5baafe> /usr/lib/dyld 0x0 - 0xffffffffffffffff ??? (*) <00000000-0000-0000-0000-000000000000> ??? 0x7ff81750c000 - 0x7ff817517faf libsystem_pthread.dylib (*) <2f5f8bae-cebe-30d8-83e3-eca5a30ea39d> /usr/lib/system/libsystem_pthread.dylib 0x7ff817547000 - 0x7ff81755093f libsystem_platform.dylib (*) <9e1f4533-b5c0-3b94-9a00-b9a9000b2f30> /usr/lib/system/libsystem_platform.dylib External Modification Summary: Calls made by other processes targeting this process: task_for_pid: 0 thread_create: 0 thread_set_state: 0 Calls made by this process: task_for_pid: 0 thread_create: 0 thread_set_state: 0 Calls made by all processes on this machine: task_for_pid: 2 thread_create: 0 thread_set_state: 0 ----------- Full Report ----------- {"app_name":"cpptools-srv","timestamp":"2025-09-22 17:00:01.00 +0200","app_version":"","slice_uuid":"f49d439f-8698-32f9-a7f1-1a671ccaffcb","build_version":"1.27.7.0","platform":1,"share_with_app_devs":0,"is_first_party":1,"bug_type":"309","os_version":"macOS 15.6.1 (24G90)","roots_installed":0,"incident_id":"FFC51071-F12A-46BC-A31B-7D34B749D95B","name":"cpptools-srv"} { "uptime" : 11000, "procRole" : "Unspecified", "version" : 2, "userID" : 501, "deployVersion" : 210, "modelCode" : "MacPro7,1", "coalitionID" : 1647, "osVersion" : { "train" : "macOS 15.6.1", "build" : "24G90", "releaseType" : "User" }, "captureTime" : "2025-09-22 17:00:00.8055 +0200", "codeSigningMonitor" : 0, "incident" : "FFC51071-F12A-46BC-A31B-7D34B749D95B", "pid" : 11157, "cpuType" : "X86-64", "roots_installed" : 0, "bug_type" : "309", "procLaunch" : "2025-09-22 17:00:00.4489 +0200", "procStartAbsTime" : 11701446259729, "procExitAbsTime" : 11701802609677, "procName" : "cpptools-srv", "procPath" : "\/Users\/USER\/*\/cpptools-srv", "bundleInfo" : {"CFBundleVersion":"1.27.7.0"}, "parentProc" : "launchd", "parentPid" : 1, "coalitionName" : "com.microsoft.VSCode", "crashReporterKey" : "C1C7046E-FA4B-3ED7-1C7F-669E82C84316", "appleIntelligenceStatus" : {"state":"unavailable","reasons":["deviceNotCapable"]}, "responsiblePid" : 2919, "responsibleProc" : "Electron", "codeSigningID" : "cpptools-srv-55554944f49d439f869832f9a7f11a671ccaffcb", "codeSigningTeamID" : "UBF8T346G9", "codeSigningFlags" : 570503957, "codeSigningValidationCategory" : 6, "codeSigningTrustLevel" : 4294967295, "codeSigningAuxiliaryInfo" : 0, "bootSessionUUID" : "83E590FE-3705-42E6-B93E-604A61CA5DC7", "sip" : "enabled", "vmRegionInfo" : "0 is not in any region. Bytes before following region: 4294967296\n REGION TYPE START - END [ VSIZE] PRT\/MAX SHRMOD REGION DETAIL\n UNUSED SPACE AT START\n---> \n __TEXT 100000000-100ca4000 [ 12.6M] r-x\/r-x SM=COW \/Users\/USER\/*\/cpptools-srv", "exception" : {"codes":"0x0000000000000001, 0x0000000000000000","rawCodes":[1,0],"type":"EXC_BAD_ACCESS","signal":"SIGSEGV","subtype":"KERN_INVALID_ADDRESS at 0x0000000000000000"}, "termination" : {"flags":0,"code":11,"namespace":"SIGNAL","indicator":"Segmentation fault: 11","byProc":"cpptools-srv","byPid":11157}, "vmregioninfo" : "0 is not in any region. Bytes before following region: 4294967296\n REGION TYPE START - END [ VSIZE] PRT\/MAX SHRMOD REGION DETAIL\n UNUSED SPACE AT START\n---> \n __TEXT 100000000-100ca4000 [ 12.6M] r-x\/r-x SM=COW \/Users\/USER\/*\/cpptools-srv", "extMods" : {"caller":{"thread_create":0,"thread_set_state":0,"task_for_pid":0},"system":{"thread_create":0,"thread_set_state":0,"task_for_pid":2},"targeted":{"thread_create":0,"thread_set_state":0,"task_for_pid":0},"warnings":0}, "faultingThread" : 6, "threads" : 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Originally posted by @SoloWingPixy2097 in #13908
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