Segmentation fault when debugging

[jensjoha]

I've had the VM crash on me a few times in the last few weeks when debugging. I don't think I can reproduce it with any specific measure, but it's happened at least twice. The output this time (on 020359d) was:

Connecting to VM Service at ws://127.0.0.1:46041//ws
Running suite parser...
[ 00:00 |   0.0% | +    0 | -    0 ]: parser/error_recovery/issue_42229.crash token
[ 00:00 |   0.0% | +    0 | -    0 ]: parser/error_recovery/issue_42229.crash token

===== CRASH =====
si_signo=Segmentation fault(11), si_code=1, si_addr=0x36013f
version=2.9.0-edge.020359dcc8a82eb49a523591f47ff00145cabb16 (be) (Tue Jun 9 06:28:37 2020 +0000) on "linux_x64"
pid=162413, thread=162444, isolate_group=main(0x55fde4bd8500), isolate=main(0x55fde4bb6900)
isolate_instructions=55fde26ea880, vm_instructions=55fde26ea880
  pc 0x000055fde2def825 fp 0x00007fdbc9cfc000 dart::kernel::TranslationHelper::InitFromKernelProgramInfo(dart::KernelProgramInfo const&)+0x15
  pc 0x000055fde2a5030a fp 0x00007fdbc9cfc210 dart::DartCompilationPipeline::BuildFlowGraph(dart::Zone*, dart::ParsedFunction*, dart::ZoneGrowableArray<dart::ICData const*>*, long, bool)+0x3a
  pc 0x000055fde2a51515 fp 0x00007fdbc9cfc8e0 dart::CompileParsedFunctionHelper::Compile(dart::CompilationPipeline*)+0x4e5
  pc 0x000055fde2a52558 fp 0x00007fdbc9cfcad0 [whereever]/sdk/out/ReleaseX64/dart-sdk/bin/dart+0x1cad558
  pc 0x000055fde2a520b0 fp 0x00007fdbc9cfcb60 dart::Compiler::CompileFunction(dart::Thread*, dart::Function const&)+0x1c0
  pc 0x000055fde2a5072c fp 0x00007fdbc9cfcc10 dart::DRT_CompileFunction(dart::NativeArguments)+0x1ec
  pc 0x00007fdbdf5812b8 fp 0x00007fdbc9cfcc50 Unknown symbol
  pc 0x00007fdbdf581314 fp 0x00007fdbc9cfcc80 Unknown symbol
  pc 0x00007fdbcbe00b50 fp 0x00007fdbc9cfccb8 Unknown symbol
  pc 0x00007fdbdf58174c fp 0x00007fdbc9cfcd58 Unknown symbol
  pc 0x000055fde28ce932 fp 0x00007fdbc9cfcdf0 dart::DartEntry::InvokeCode(dart::Code const&, dart::Array const&, dart::Array const&, dart::Thread*)+0x112
  pc 0x000055fde28ce694 fp 0x00007fdbc9cfce80 dart::DartEntry::InvokeFunction(dart::Function const&, dart::Array const&, dart::Array const&, unsigned long)+0x2d4
  pc 0x000055fde29568bb fp 0x00007fdbc9cfd280 [whereever]/sdk/out/ReleaseX64/dart-sdk/bin/dart+0x1bb18bb
  pc 0x000055fde2a1a834 fp 0x00007fdbc9cfd2f0 [whereever]/sdk/out/ReleaseX64/dart-sdk/bin/dart+0x1c75834
  pc 0x000055fde2a12da2 fp 0x00007fdbc9cfd450 dart::Service::InvokeMethod(dart::Isolate*, dart::Array const&, bool)+0x3a2
  pc 0x000055fde2a134f1 fp 0x00007fdbc9cfd470 dart::Service::HandleIsolateMessage(dart::Isolate*, dart::Array const&)+0x11
  pc 0x000055fde29074b4 fp 0x00007fdbc9cfd660 dart::IsolateMessageHandler::HandleMessage(std::__2::unique_ptr<dart::Message, std::__2::default_delete<dart::Message> >)+0x704
  pc 0x000055fde2933f46 fp 0x00007fdbc9cfd6d0 dart::MessageHandler::HandleMessages(dart::MonitorLocker*, bool, bool)+0x146
  pc 0x000055fde2934307 fp 0x00007fdbc9cfd710 dart::MessageHandler::HandleOOBMessages()+0x47
  pc 0x000055fde2e3c1a6 fp 0x00007fdbc9cfd790 Dart_HandleServiceMessages+0x126
  pc 0x000055fde290d856 fp 0x00007fdbc9cfd7e0 dart::Isolate::PauseEventHandler()+0xa6
  pc 0x000055fde28d4055 fp 0x00007fdbc9cfd960 dart::Debugger::Pause(dart::ServiceEvent*)+0xe5
  pc 0x000055fde28df35d fp 0x00007fdbc9cfda90 dart::Debugger::SignalPausedEvent(dart::ActivationFrame*, dart::Breakpoint*)+0xed
  pc 0x000055fde28df6a4 fp 0x00007fdbc9cfdae0 dart::Debugger::PauseStepping()+0x334
  pc 0x000055fde2a075ff fp 0x00007fdbc9cfdb70 dart::DRT_SingleStepHandler(dart::NativeArguments)+0x9f
  pc 0x00007fdbdf5812b8 fp 0x00007fdbc9cfdbb0 Unknown symbol
  pc 0x00007fdbdf58187e fp 0x00007fdbc9cfdbd0 Unknown symbol
  pc 0x00007fdbc7678fe6 fp 0x00007fdbc9cfdc60 Unknown symbol
  pc 0x00007fdbc7650d04 fp 0x00007fdbc9cfdd18 Unknown symbol
  pc 0x00007fdbc762d6a5 fp 0x00007fdbc9cfdd70 Unknown symbol
  pc 0x00007fdbc7622f20 fp 0x00007fdbc9cfdde8 Unknown symbol
  pc 0x00007fdbc761aa90 fp 0x00007fdbc9cfdec0 Unknown symbol
  pc 0x00007fdbc7617798 fp 0x00007fdbc9cfdf20 Unknown symbol
  pc 0x00007fdbc7615169 fp 0x00007fdbc9cfdf90 Unknown symbol
  pc 0x00007fdbc7b7017b fp 0x00007fdbc9cfe058 Unknown symbol
  pc 0x00007fdbc7b6f619 fp 0x00007fdbc9cfe0f8 Unknown symbol
  pc 0x00007fdbdeb2a8fd fp 0x00007fdbc9cfe138 Unknown symbol
  pc 0x00007fdbc7b6e68e fp 0x00007fdbc9cfe190 Unknown symbol
  pc 0x00007fdbc7b6e0cd fp 0x00007fdbc9cfe210 Unknown symbol
  pc 0x00007fdbc7b658c3 fp 0x00007fdbc9cfe288 Unknown symbol
  pc 0x00007fdbc7b6570d fp 0x00007fdbc9cfe2f8 Unknown symbol
  pc 0x00007fdbc7b64ba3 fp 0x00007fdbc9cfe398 Unknown symbol
  pc 0x00007fdbc7b6de75 fp 0x00007fdbc9cfe408 Unknown symbol
  pc 0x00007fdbc7b6dd2c fp 0x00007fdbc9cfe458 Unknown symbol
  pc 0x00007fdbc7b659e7 fp 0x00007fdbc9cfe4d0 Unknown symbol
  pc 0x00007fdbc7b6570d fp 0x00007fdbc9cfe540 Unknown symbol
  pc 0x00007fdbc7b64ba3 fp 0x00007fdbc9cfe5e0 Unknown symbol
  pc 0x00007fdbc7b6dbaf fp 0x00007fdbc9cfe640 Unknown symbol
  pc 0x00007fdbc7b6da09 fp 0x00007fdbc9cfe690 Unknown symbol
  pc 0x00007fdbdeb24b8a fp 0x00007fdbc9cfe6d0 Unknown symbol
  pc 0x00007fdbc7b6cdcb fp 0x00007fdbc9cfe760 Unknown symbol
  pc 0x00007fdbc7b6af54 fp 0x00007fdbc9cfe798 Unknown symbol
  pc 0x00007fdbc7b6acba fp 0x00007fdbc9cfe7e0 Unknown symbol
  pc 0x00007fdbdeb24b8a fp 0x00007fdbc9cfe820 Unknown symbol
  pc 0x00007fdbdeb24a9e fp 0x00007fdbc9cfe858 Unknown symbol
  pc 0x00007fdbdf58174c fp 0x00007fdbc9cfe8c8 Unknown symbol
  pc 0x000055fde28ce932 fp 0x00007fdbc9cfe960 dart::DartEntry::InvokeCode(dart::Code const&, dart::Array const&, dart::Array const&, dart::Thread*)+0x112
  pc 0x000055fde28ce694 fp 0x00007fdbc9cfe9f0 dart::DartEntry::InvokeFunction(dart::Function const&, dart::Array const&, dart::Array const&, unsigned long)+0x2d4
  pc 0x000055fde28d08d6 fp 0x00007fdbc9cfea40 dart::DartLibraryCalls::HandleMessage(dart::Object const&, dart::Instance const&)+0x1f6
  pc 0x000055fde2907254 fp 0x00007fdbc9cfec30 dart::IsolateMessageHandler::HandleMessage(std::__2::unique_ptr<dart::Message, std::__2::default_delete<dart::Message> >)+0x4a4
  pc 0x000055fde2933f46 fp 0x00007fdbc9cfeca0 dart::MessageHandler::HandleMessages(dart::MonitorLocker*, bool, bool)+0x146
  pc 0x000055fde29345fa fp 0x00007fdbc9cfed00 dart::MessageHandler::TaskCallback()+0x1da
  pc 0x000055fde2a3dbb8 fp 0x00007fdbc9cfed80 dart::ThreadPool::WorkerLoop(dart::ThreadPool::Worker*)+0x148
  pc 0x000055fde2a3e08c fp 0x00007fdbc9cfedb0 dart::ThreadPool::Worker::Main(unsigned long)+0x5c
  pc 0x000055fde29b6f16 fp 0x00007fdbc9cfee70 [whereever]/sdk/out/ReleaseX64/dart-sdk/bin/dart+0x1c11f16
-- End of DumpStackTrace
[exit     : sp(0) fp(0x7fdbc9cfcc50) pc(0)]
[stub     : sp(0x7fdbc9cfcc60) fp(0x7fdbc9cfcc80) pc(0x7fdbdf581314)]
[dart     : sp(0x7fdbc9cfcc90) fp(0x7fdbc9cfccb8) pc(0x7fdbcbe00b50) package:_fe_analyzer_shared/src/parser/type_info_impl.dart_ComplexTypeParamOrArgInfo__Eval ]
[entry    : sp(0x7fdbc9cfccc8) fp(0x7fdbc9cfcd58) pc(0x7fdbdf58174c)]
[exit     : sp(0) fp(0x7fdbc9cfdbb0) pc(0)]
[stub     : sp(0x7fdbc9cfdbc0) fp(0x7fdbc9cfdbd0) pc(0x7fdbdf58187e)]
[dart     : sp(0x7fdbc9cfdbe0) fp(0x7fdbc9cfdc60) pc(0x7fdbc7678fe6) package:_fe_analyzer_shared/src/parser/type_info_impl.dart_ComplexTypeParamOrArgInfo_parseUnexpectedEnd ]
[dart     : sp(0x7fdbc9cfdc70) fp(0x7fdbc9cfdd18) pc(0x7fdbc7650d04) package:_fe_analyzer_shared/src/parser/type_info_impl.dart_ComplexTypeParamOrArgInfo_parseVariables ]
[dart     : sp(0x7fdbc9cfdd28) fp(0x7fdbc9cfdd70) pc(0x7fdbc762d6a5) package:_fe_analyzer_shared/src/parser/parser_impl.dart_Parser_parseMethodTypeVar ]
[dart     : sp(0x7fdbc9cfdd80) fp(0x7fdbc9cfdde8) pc(0x7fdbc7622f20) package:_fe_analyzer_shared/src/parser/parser_impl.dart_Parser_parseTopLevelMethod ]
[dart     : sp(0x7fdbc9cfddf8) fp(0x7fdbc9cfdec0) pc(0x7fdbc761aa90) package:_fe_analyzer_shared/src/parser/parser_impl.dart_Parser_parseTopLevelMemberImpl ]
[dart     : sp(0x7fdbc9cfded0) fp(0x7fdbc9cfdf20) pc(0x7fdbc7617798) package:_fe_analyzer_shared/src/parser/parser_impl.dart_Parser_parseTopLevelDeclarationImpl ]
[dart     : sp(0x7fdbc9cfdf30) fp(0x7fdbc9cfdf90) pc(0x7fdbc7615169) package:_fe_analyzer_shared/src/parser/parser_impl.dart_Parser_parseUnit ]
[dart     : sp(0x7fdbc9cfdfa0) fp(0x7fdbc9cfe058) pc(0x7fdbc7b7017b) file://[whereever]/sdk/pkg/front_end/test/parser_suite.dart_TokenStep_run ]
[dart     : sp(0x7fdbc9cfe068) fp(0x7fdbc9cfe0f8) pc(0x7fdbc7b6f619) package:testing/src/chain.dart_ChainContext_run__async_op_doStep__async_op_<anonymous closure>__async_op ]
[dart     : sp(0x7fdbc9cfe108) fp(0x7fdbc9cfe138) pc(0x7fdbdeb2a8fd) dart:async__AsyncAwaitCompleter@4048458_start ]
[dart     : sp(0x7fdbc9cfe148) fp(0x7fdbc9cfe190) pc(0x7fdbc7b6e68e) package:testing/src/chain.dart_ChainContext_run__async_op_doStep__async_op_<anonymous closure> ]
[dart     : sp(0x7fdbc9cfe1a0) fp(0x7fdbc9cfe210) pc(0x7fdbc7b6e0cd) dart:async_Future_Future._<anonymous closure> ]
[dart     : sp(0x7fdbc9cfe220) fp(0x7fdbc9cfe288) pc(0x7fdbc7b658c3) dart:async_::__rootRun@4048458 ]
[dart     : sp(0x7fdbc9cfe298) fp(0x7fdbc9cfe2f8) pc(0x7fdbc7b6570d) dart:async_::__rootRun@4048458__rootRun@4048458 ]
[dart     : sp(0x7fdbc9cfe308) fp(0x7fdbc9cfe398) pc(0x7fdbc7b64ba3) dart:async__CustomZone@4048458_run ]
[dart     : sp(0x7fdbc9cfe3a8) fp(0x7fdbc9cfe408) pc(0x7fdbc7b6de75) dart:async__CustomZone@4048458_runGuarded ]
[dart     : sp(0x7fdbc9cfe418) fp(0x7fdbc9cfe458) pc(0x7fdbc7b6dd2c) dart:async__CustomZone@4048458_bindCallbackGuarded_<anonymous closure> ]
[dart     : sp(0x7fdbc9cfe468) fp(0x7fdbc9cfe4d0) pc(0x7fdbc7b659e7) dart:async_::__rootRun@4048458 ]
[dart     : sp(0x7fdbc9cfe4e0) fp(0x7fdbc9cfe540) pc(0x7fdbc7b6570d) dart:async_::__rootRun@4048458__rootRun@4048458 ]
[dart     : sp(0x7fdbc9cfe550) fp(0x7fdbc9cfe5e0) pc(0x7fdbc7b64ba3) dart:async__CustomZone@4048458_run ]
[dart     : sp(0x7fdbc9cfe5f0) fp(0x7fdbc9cfe640) pc(0x7fdbc7b6dbaf) dart:async__CustomZone@4048458_bindCallback_<anonymous closure> ]
[dart     : sp(0x7fdbc9cfe650) fp(0x7fdbc9cfe690) pc(0x7fdbc7b6da09) dart:async_Timer__createTimer@4048458_<anonymous closure> ]
[dart     : sp(0x7fdbc9cfe6a0) fp(0x7fdbc9cfe6d0) pc(0x7fdbdeb24b8a) dart:core__Closure@0150898_call ]
[dart     : sp(0x7fdbc9cfe6e0) fp(0x7fdbc9cfe760) pc(0x7fdbc7b6cdcb) dart:isolate__Timer@1026248__runTimers@1026248 ]
[dart     : sp(0x7fdbc9cfe770) fp(0x7fdbc9cfe798) pc(0x7fdbc7b6af54) dart:isolate__Timer@1026248__handleMessage@1026248 ]
[dart     : sp(0x7fdbc9cfe7a8) fp(0x7fdbc9cfe7e0) pc(0x7fdbc7b6acba) dart:isolate__Timer@1026248__handleMessage@1026248__handleMessage@1026248 ]
[dart     : sp(0x7fdbc9cfe7f0) fp(0x7fdbc9cfe820) pc(0x7fdbdeb24b8a) dart:core__Closure@0150898_call ]
[dart     : sp(0x7fdbc9cfe830) fp(0x7fdbc9cfe858) pc(0x7fdbdeb24a9e) dart:isolate__RawReceivePortImpl@1026248__handleMessage@1026248 ]
[entry    : sp(0x7fdbc9cfe868) fp(0x7fdbc9cfe8c8) pc(0x7fdbdf58174c)]
Exited (250)

/cc @mraleph @mkustermann

[jensjoha]

I actually can reproduce:

out/ReleaseX64/dart --pause_isolates_on_start --disable_dart_dev --enable-vm-service=0 --disable-service-auth-codes pkg/front_end/test/parser_suite.dart

go to observatory, debug, write

break parser_impl.dart:2597 (< enter >)
c (< enter >)

when it stops, write

p codes.templateExpectedAfterButGot.withArguments (< enter >)

and bang:

Observatory listening on http://127.0.0.1:33909/
Running suite parser...
[ 00:00 |   0.0% | +    0 | -    0 ]: parser/error_recovery/await_not_in_async token
[ 00:00 |   0.0% | +    0 | -    0 ]: parser/error_recovery/await_not_in_async token

===== CRASH =====
si_signo=Segmentation fault(11), si_code=1, si_addr=0x36013f
version=2.9.0-edge.020359dcc8a82eb49a523591f47ff00145cabb16 (be) (Tue Jun 9 06:28:37 2020 +0000) on "linux_x64"
pid=170730, thread=170855, isolate_group=main(0x55d7040f0500), isolate=main(0x55d7040d8900)
isolate_instructions=55d701947880, vm_instructions=55d701947880
  pc 0x000055d70204c825 fp 0x00007fe9b9cf9ed0 dart::kernel::TranslationHelper::InitFromKernelProgramInfo(dart::KernelProgramInfo const&)+0x15
  pc 0x000055d701cad30a fp 0x00007fe9b9cfa0e0 dart::DartCompilationPipeline::BuildFlowGraph(dart::Zone*, dart::ParsedFunction*, dart::ZoneGrowableArray<dart::ICData const*>*, long, bool)+0x3a
  pc 0x000055d701cae515 fp 0x00007fe9b9cfa7b0 dart::CompileParsedFunctionHelper::Compile(dart::CompilationPipeline*)+0x4e5
  pc 0x000055d701caf558 fp 0x00007fe9b9cfa9a0 out/ReleaseX64/dart+0x1cad558
  pc 0x000055d701caf0b0 fp 0x00007fe9b9cfaa30 dart::Compiler::CompileFunction(dart::Thread*, dart::Function const&)+0x1c0
  pc 0x000055d701bc5e78 fp 0x00007fe9b9cfaa60 dart::Function::EnsureHasCode() const+0x68
  pc 0x000055d701c65d4d fp 0x00007fe9b9cfaba0 out/ReleaseX64/dart+0x1c63d4d
  pc 0x000055d701c648c6 fp 0x00007fe9b9cfac70 dart::DRT_InlineCacheMissHandlerOneArg(dart::NativeArguments)+0x116
  pc 0x00007fe9bac812b8 fp 0x00007fe9b9cfacb0 Unknown symbol
  pc 0x00007fe9bac822d6 fp 0x00007fe9b9cfad00 Unknown symbol
  pc 0x00007fe9a249c4e0 fp 0x00007fe9b9cfad38 Unknown symbol
  pc 0x00007fe9bac8174c fp 0x00007fe9b9cfadd8 Unknown symbol
  pc 0x000055d701b2b932 fp 0x00007fe9b9cfae70 dart::DartEntry::InvokeCode(dart::Code const&, dart::Array const&, dart::Array const&, dart::Thread*)+0x112
  pc 0x000055d701b2b694 fp 0x00007fe9b9cfaf00 dart::DartEntry::InvokeFunction(dart::Function const&, dart::Array const&, dart::Array const&, unsigned long)+0x2d4
  pc 0x000055d701bb38bb fp 0x00007fe9b9cfb300 out/ReleaseX64/dart+0x1bb18bb
  pc 0x000055d701c77834 fp 0x00007fe9b9cfb370 out/ReleaseX64/dart+0x1c75834
  pc 0x000055d701c6fda2 fp 0x00007fe9b9cfb4d0 dart::Service::InvokeMethod(dart::Isolate*, dart::Array const&, bool)+0x3a2
  pc 0x000055d701c704f1 fp 0x00007fe9b9cfb4f0 dart::Service::HandleIsolateMessage(dart::Isolate*, dart::Array const&)+0x11
  pc 0x000055d701b644b4 fp 0x00007fe9b9cfb6e0 dart::IsolateMessageHandler::HandleMessage(std::__2::unique_ptr<dart::Message, std::__2::default_delete<dart::Message> >)+0x704
  pc 0x000055d701b90f46 fp 0x00007fe9b9cfb750 dart::MessageHandler::HandleMessages(dart::MonitorLocker*, bool, bool)+0x146
  pc 0x000055d701b91307 fp 0x00007fe9b9cfb790 dart::MessageHandler::HandleOOBMessages()+0x47
  pc 0x000055d7020991a6 fp 0x00007fe9b9cfb810 Dart_HandleServiceMessages+0x126
  pc 0x000055d701b6a856 fp 0x00007fe9b9cfb860 dart::Isolate::PauseEventHandler()+0xa6
  pc 0x000055d701b31055 fp 0x00007fe9b9cfb9e0 dart::Debugger::Pause(dart::ServiceEvent*)+0xe5
  pc 0x000055d701b3c35d fp 0x00007fe9b9cfbb10 dart::Debugger::SignalPausedEvent(dart::ActivationFrame*, dart::Breakpoint*)+0xed
  pc 0x000055d701b3c9f4 fp 0x00007fe9b9cfbb80 dart::Debugger::PauseBreakpoint()+0x304
  pc 0x000055d701c644d4 fp 0x00007fe9b9cfbd00 dart::DRT_BreakpointRuntimeHandler(dart::NativeArguments)+0x144
  pc 0x00007fe9bac812b8 fp 0x00007fe9b9cfbd40 Unknown symbol
  pc 0x00007fe9bac82102 fp 0x00007fe9b9cfbd78 Unknown symbol
  pc 0x00007fe9a249be44 fp 0x00007fe9b9cfbde8 Unknown symbol
  pc 0x00007fe9a2494f30 fp 0x00007fe9b9cfbec0 Unknown symbol
  pc 0x00007fe9a2491c38 fp 0x00007fe9b9cfbf20 Unknown symbol
  pc 0x00007fe9a248f609 fp 0x00007fe9b9cfbf90 Unknown symbol
  pc 0x00007fe9a2c697bb fp 0x00007fe9b9cfc058 Unknown symbol
  pc 0x00007fe9a2c68c59 fp 0x00007fe9b9cfc0f8 Unknown symbol
  pc 0x00007fe9ba12934d fp 0x00007fe9b9cfc138 Unknown symbol
  pc 0x00007fe9a2c67cce fp 0x00007fe9b9cfc190 Unknown symbol
  pc 0x00007fe9a2c6770d fp 0x00007fe9b9cfc210 Unknown symbol
  pc 0x00007fe9a2c5f3a3 fp 0x00007fe9b9cfc288 Unknown symbol
  pc 0x00007fe9a2c5f1ed fp 0x00007fe9b9cfc2f8 Unknown symbol
  pc 0x00007fe9a2c5e683 fp 0x00007fe9b9cfc398 Unknown symbol
  pc 0x00007fe9a2c674b5 fp 0x00007fe9b9cfc408 Unknown symbol
  pc 0x00007fe9a2c6736c fp 0x00007fe9b9cfc458 Unknown symbol
  pc 0x00007fe9a2c5f4c7 fp 0x00007fe9b9cfc4d0 Unknown symbol
  pc 0x00007fe9a2c5f1ed fp 0x00007fe9b9cfc540 Unknown symbol
  pc 0x00007fe9a2c5e683 fp 0x00007fe9b9cfc5e0 Unknown symbol
  pc 0x00007fe9a2c671ef fp 0x00007fe9b9cfc640 Unknown symbol
  pc 0x00007fe9a2c67049 fp 0x00007fe9b9cfc690 Unknown symbol
  pc 0x00007fe9ba12376a fp 0x00007fe9b9cfc6d0 Unknown symbol
  pc 0x00007fe9a2c6640b fp 0x00007fe9b9cfc760 Unknown symbol
  pc 0x00007fe9a2c645d1 fp 0x00007fe9b9cfc798 Unknown symbol
  pc 0x00007fe9a2c6446a fp 0x00007fe9b9cfc7e0 Unknown symbol
  pc 0x00007fe9ba12376a fp 0x00007fe9b9cfc820 Unknown symbol
  pc 0x00007fe9ba12367e fp 0x00007fe9b9cfc858 Unknown symbol
  pc 0x00007fe9bac8174c fp 0x00007fe9b9cfc8c8 Unknown symbol
  pc 0x000055d701b2b932 fp 0x00007fe9b9cfc960 dart::DartEntry::InvokeCode(dart::Code const&, dart::Array const&, dart::Array const&, dart::Thread*)+0x112
  pc 0x000055d701b2b694 fp 0x00007fe9b9cfc9f0 dart::DartEntry::InvokeFunction(dart::Function const&, dart::Array const&, dart::Array const&, unsigned long)+0x2d4
  pc 0x000055d701b2d8d6 fp 0x00007fe9b9cfca40 dart::DartLibraryCalls::HandleMessage(dart::Object const&, dart::Instance const&)+0x1f6
  pc 0x000055d701b64254 fp 0x00007fe9b9cfcc30 dart::IsolateMessageHandler::HandleMessage(std::__2::unique_ptr<dart::Message, std::__2::default_delete<dart::Message> >)+0x4a4
  pc 0x000055d701b90f46 fp 0x00007fe9b9cfcca0 dart::MessageHandler::HandleMessages(dart::MonitorLocker*, bool, bool)+0x146
  pc 0x000055d701b915fa fp 0x00007fe9b9cfcd00 dart::MessageHandler::TaskCallback()+0x1da
  pc 0x000055d701c9abb8 fp 0x00007fe9b9cfcd80 dart::ThreadPool::WorkerLoop(dart::ThreadPool::Worker*)+0x148
  pc 0x000055d701c9b08c fp 0x00007fe9b9cfcdb0 dart::ThreadPool::Worker::Main(unsigned long)+0x5c
  pc 0x000055d701c13f16 fp 0x00007fe9b9cfce70 out/ReleaseX64/dart+0x1c11f16
-- End of DumpStackTrace
[exit     : sp(0) fp(0x7fe9b9cfacb0) pc(0)]
[stub     : sp(0x7fe9b9cfacc0) fp(0x7fe9b9cfad00) pc(0x7fe9bac822d6)]
[dart     : sp(0x7fe9b9cfad10) fp(0x7fe9b9cfad38) pc(0x7fe9a249c4e0) package:_fe_analyzer_shared/src/parser/parser_impl.dart_Parser__Eval ]
[entry    : sp(0x7fe9b9cfad48) fp(0x7fe9b9cfadd8) pc(0x7fe9bac8174c)]
[exit     : sp(0) fp(0x7fe9b9cfbd40) pc(0)]
[stub     : sp(0x7fe9b9cfbd50) fp(0x7fe9b9cfbd78) pc(0x7fe9bac82102)]
[dart     : sp(0x7fe9b9cfbd88) fp(0x7fe9b9cfbde8) pc(0x7fe9a249be44) package:_fe_analyzer_shared/src/parser/parser_impl.dart_Parser_parseTopLevelMethod ]
[dart     : sp(0x7fe9b9cfbdf8) fp(0x7fe9b9cfbec0) pc(0x7fe9a2494f30) package:_fe_analyzer_shared/src/parser/parser_impl.dart_Parser_parseTopLevelMemberImpl ]
[dart     : sp(0x7fe9b9cfbed0) fp(0x7fe9b9cfbf20) pc(0x7fe9a2491c38) package:_fe_analyzer_shared/src/parser/parser_impl.dart_Parser_parseTopLevelDeclarationImpl ]
[dart     : sp(0x7fe9b9cfbf30) fp(0x7fe9b9cfbf90) pc(0x7fe9a248f609) package:_fe_analyzer_shared/src/parser/parser_impl.dart_Parser_parseUnit ]
[dart     : sp(0x7fe9b9cfbfa0) fp(0x7fe9b9cfc058) pc(0x7fe9a2c697bb) file://[whereever]/sdk/pkg/front_end/test/parser_suite.dart_TokenStep_run ]
[dart     : sp(0x7fe9b9cfc068) fp(0x7fe9b9cfc0f8) pc(0x7fe9a2c68c59) package:testing/src/chain.dart_ChainContext_run__async_op_doStep__async_op_<anonymous closure>__async_op ]
[dart     : sp(0x7fe9b9cfc108) fp(0x7fe9b9cfc138) pc(0x7fe9ba12934d) dart:async__AsyncAwaitCompleter@4048458_start ]
[dart     : sp(0x7fe9b9cfc148) fp(0x7fe9b9cfc190) pc(0x7fe9a2c67cce) package:testing/src/chain.dart_ChainContext_run__async_op_doStep__async_op_<anonymous closure> ]
[dart     : sp(0x7fe9b9cfc1a0) fp(0x7fe9b9cfc210) pc(0x7fe9a2c6770d) dart:async_Future_Future._<anonymous closure> ]
[dart     : sp(0x7fe9b9cfc220) fp(0x7fe9b9cfc288) pc(0x7fe9a2c5f3a3) dart:async_::__rootRun@4048458 ]
[dart     : sp(0x7fe9b9cfc298) fp(0x7fe9b9cfc2f8) pc(0x7fe9a2c5f1ed) dart:async_::__rootRun@4048458__rootRun@4048458 ]
[dart     : sp(0x7fe9b9cfc308) fp(0x7fe9b9cfc398) pc(0x7fe9a2c5e683) dart:async__CustomZone@4048458_run ]
[dart     : sp(0x7fe9b9cfc3a8) fp(0x7fe9b9cfc408) pc(0x7fe9a2c674b5) dart:async__CustomZone@4048458_runGuarded ]
[dart     : sp(0x7fe9b9cfc418) fp(0x7fe9b9cfc458) pc(0x7fe9a2c6736c) dart:async__CustomZone@4048458_bindCallbackGuarded_<anonymous closure> ]
[dart     : sp(0x7fe9b9cfc468) fp(0x7fe9b9cfc4d0) pc(0x7fe9a2c5f4c7) dart:async_::__rootRun@4048458 ]
[dart     : sp(0x7fe9b9cfc4e0) fp(0x7fe9b9cfc540) pc(0x7fe9a2c5f1ed) dart:async_::__rootRun@4048458__rootRun@4048458 ]
[dart     : sp(0x7fe9b9cfc550) fp(0x7fe9b9cfc5e0) pc(0x7fe9a2c5e683) dart:async__CustomZone@4048458_run ]
[dart     : sp(0x7fe9b9cfc5f0) fp(0x7fe9b9cfc640) pc(0x7fe9a2c671ef) dart:async__CustomZone@4048458_bindCallback_<anonymous closure> ]
[dart     : sp(0x7fe9b9cfc650) fp(0x7fe9b9cfc690) pc(0x7fe9a2c67049) dart:async_Timer__createTimer@4048458_<anonymous closure> ]
[dart     : sp(0x7fe9b9cfc6a0) fp(0x7fe9b9cfc6d0) pc(0x7fe9ba12376a) dart:core__Closure@0150898_call ]
[dart     : sp(0x7fe9b9cfc6e0) fp(0x7fe9b9cfc760) pc(0x7fe9a2c6640b) dart:isolate__Timer@1026248__runTimers@1026248 ]
[dart     : sp(0x7fe9b9cfc770) fp(0x7fe9b9cfc798) pc(0x7fe9a2c645d1) dart:isolate__Timer@1026248__handleMessage@1026248 ]
[dart     : sp(0x7fe9b9cfc7a8) fp(0x7fe9b9cfc7e0) pc(0x7fe9a2c6446a) dart:isolate__Timer@1026248__handleMessage@1026248__handleMessage@1026248 ]
[dart     : sp(0x7fe9b9cfc7f0) fp(0x7fe9b9cfc820) pc(0x7fe9ba12376a) dart:core__Closure@0150898_call ]
[dart     : sp(0x7fe9b9cfc830) fp(0x7fe9b9cfc858) pc(0x7fe9ba12367e) dart:isolate__RawReceivePortImpl@1026248__handleMessage@1026248 ]
[entry    : sp(0x7fe9b9cfc868) fp(0x7fe9b9cfc8c8) pc(0x7fe9bac8174c)]
Aborted

[a-siva]

/cc @aam seems to be related to expression evaluation

[aam]

debug build of dart sdk shows assert triggered when expression evaluation request comes through

╰─➤  xcodebuild/DebugX64/dart --pause_isolates_on_start --disable_dart_dev --enable-vm-service=8181 --disable-service-auth-codes pkg/front_end/test/parser_suite.dart
Observatory listening on http://127.0.0.1:8181/
Running suite parser...
../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc: 2770: error: expected: Class::Handle(field.Owner()).library() == Library::InternalLibrary() && Class::Handle(field.Owner()).Name() == Symbols::ClassID().raw()
version=2.9.0-edge.56dbe294f234d0b755f58899623f78839f5d0ff1 (be) (Fri Jun 12 16:24:35 2020 +0000) on "macos_x64"
pid=34384, thread=5895, isolate_group=main(0x7fee04010c00), isolate=main(0x7fee04026e00)
isolate_instructions=102951820, vm_instructions=102951820
  pc 0x0000000102d02e94 fp 0x000070000a7ad8b0 dart::Profiler::DumpStackTrace(void*)+0x64
  pc 0x0000000102951972 fp 0x000070000a7ad990 dart::Assert::Fail(char const*, ...)+0x82
  pc 0x0000000103214c22 fp 0x000070000a7ada00 dart::kernel::StreamingFlowGraphBuilder::BuildStaticGet(dart::TokenPosition*)+0x462
  pc 0x000000010320ce94 fp 0x000070000a7ada50 dart::kernel::StreamingFlowGraphBuilder::BuildExpression(dart::TokenPosition*)+0x1e4
  pc 0x0000000103212ed2 fp 0x000070000a7adaf0 dart::kernel::StreamingFlowGraphBuilder::BuildPropertyGet(dart::TokenPosition*)+0x72
  pc 0x000000010320d0e2 fp 0x000070000a7adb40 dart::kernel::StreamingFlowGraphBuilder::BuildExpression(dart::TokenPosition*)+0x432
  pc 0x000000010321c1f7 fp 0x000070000a7adb90 dart::kernel::StreamingFlowGraphBuilder::BuildReturnStatement()+0x57
  pc 0x000000010320f859 fp 0x000070000a7adbd0 dart::kernel::StreamingFlowGraphBuilder::BuildStatement()+0xb9
  pc 0x000000010321165c fp 0x000070000a7adc60 dart::kernel::StreamingFlowGraphBuilder::BuildFunctionBody(dart::Function const&, dart::LocalVariable*, bool)+0xfc
  pc 0x0000000103211dc8 fp 0x000070000a7adde0 dart::kernel::StreamingFlowGraphBuilder::BuildGraphOfFunction(bool)+0x248
  pc 0x0000000103212619 fp 0x000070000a7ae010 dart::kernel::StreamingFlowGraphBuilder::BuildGraph()+0x369
  pc 0x0000000103228428 fp 0x000070000a7ae310 dart::kernel::FlowGraphBuilder::BuildGraph()+0xf8
  pc 0x0000000102de7a24 fp 0x000070000a7ae510 dart::DartCompilationPipeline::BuildFlowGraph(dart::Zone*, dart::ParsedFunction*, dart::ZoneGrowableArray<dart::ICData const*>*, long, bool)+0x44
  pc 0x0000000102de9124 fp 0x000070000a7aebe0 dart::CompileParsedFunctionHelper::Compile(dart::CompilationPipeline*)+0x454
  pc 0x0000000102dea297 fp 0x000070000a7aedd0 dart::CompileFunctionHelper(dart::CompilationPipeline*, dart::Function const&, bool, long)+0x487
  pc 0x0000000102de9deb fp 0x000070000a7aee60 dart::Compiler::CompileFunction(dart::Thread*, dart::Function const&)+0xfb
  pc 0x0000000102b77749 fp 0x000070000a7aef00 dart::DartEntry::InvokeFunction(dart::Function const&, dart::Array const&, dart::Array const&, unsigned long)+0x1f9
  pc 0x0000000102c48b5c fp 0x000070000a7af2f0 dart::EvaluateCompiledExpressionHelper(dart::ExternalTypedData const&, dart::Array const&, dart::String const&, dart::String const&, dart::Array const&, dart::TypeArguments const&)+0x11c
  pc 0x0000000102d93d95 fp 0x000070000a7af380 dart::EvaluateCompiledExpression(dart::Thread*, dart::JSONStream*)+0x3e5
  pc 0x0000000102d8a8ae fp 0x000070000a7af4f0 dart::Service::InvokeMethod(dart::Isolate*, dart::Array const&, bool)+0x5ae
  pc 0x0000000102d8b45a fp 0x000070000a7af520 dart::Service::HandleIsolateMessage(dart::Isolate*, dart::Array const&)+0x1a
  pc 0x0000000102bd1e58 fp 0x000070000a7af710 dart::IsolateMessageHandler::HandleMessage(std::__2::unique_ptr<dart::Message, std::__2::default_delete<dart::Message> >)+0x398
  pc 0x0000000102c16246 fp 0x000070000a7af7a0 dart::MessageHandler::HandleMessages(dart::MonitorLocker*, bool, bool)+0x1d6
  pc 0x0000000102c169f7 fp 0x000070000a7af800 dart::MessageHandler::HandleOOBMessages()+0x97
  pc 0x000000010329559d fp 0x000070000a7af890 Dart_HandleServiceMessages+0x11d
  pc 0x0000000102bda316 fp 0x000070000a7af8f0 dart::Isolate::PauseEventHandler()+0xa6
  pc 0x0000000102b7ec24 fp 0x000070000a7afa80 dart::Debugger::Pause(dart::ServiceEvent*)+0x114
  pc 0x0000000102b8e70c fp 0x000070000a7afbb0 dart::Debugger::SignalPausedEvent(dart::ActivationFrame*, dart::Breakpoint*)+0xfc
  pc 0x0000000102b8f076 fp 0x000070000a7afc30 dart::Debugger::PauseBreakpoint()+0x3b6
  pc 0x0000000102d73e98 fp 0x000070000a7afdd0 dart::DRT_BreakpointRuntimeHandler(dart::NativeArguments)+0x1d8
  pc 0x0000000105601442 fp 0x000070000a7afe18 Unknown symbol
  pc 0x0000000105602362 fp 0x000070000a7afe50 Unknown symbol
  pc 0x000000011cda9114 fp 0x000070000a7afec0 Unknown symbol
  pc 0x000000011cda1b40 fp 0x000070000a7aff98 Unknown symbol
  pc 0x000000011cd9e61f fp 0x000070000a7afff8 Unknown symbol
  pc 0x000000011cd9bc99 fp 0x000070000a7b0068 Unknown symbol
  pc 0x000000011c97204d fp 0x000070000a7b0130 Unknown symbol
  pc 0x000000011c971489 fp 0x000070000a7b01d0 Unknown symbol
  pc 0x00000001060aab9d fp 0x000070000a7b0210 Unknown symbol
  pc 0x000000011c97044e fp 0x000070000a7b0268 Unknown symbol
  pc 0x000000011c96fe6d fp 0x000070000a7b02e8 Unknown symbol
  pc 0x000000011c967503 fp 0x000070000a7b0360 Unknown symbol
  pc 0x000000011c967338 fp 0x000070000a7b03d0 Unknown symbol
  pc 0x000000011c966733 fp 0x000070000a7b0470 Unknown symbol
  pc 0x000000011c96fc05 fp 0x000070000a7b04e0 Unknown symbol
  pc 0x000000011c96faac fp 0x000070000a7b0530 Unknown symbol
  pc 0x000000011c967634 fp 0x000070000a7b05a8 Unknown symbol
  pc 0x000000011c967338 fp 0x000070000a7b0618 Unknown symbol
  pc 0x000000011c966733 fp 0x000070000a7b06b8 Unknown symbol
  pc 0x000000011c96f91f fp 0x000070000a7b0718 Unknown symbol
  pc 0x000000011c96f769 fp 0x000070000a7b0768 Unknown symbol
  pc 0x00000001060a4b76 fp 0x000070000a7b07c0 Unknown symbol
  pc 0x000000011c96eaa8 fp 0x000070000a7b0850 Unknown symbol
  pc 0x000000011c96cb81 fp 0x000070000a7b0888 Unknown symbol
  pc 0x000000011c96c9fa fp 0x000070000a7b08d0 Unknown symbol
  pc 0x00000001060a4b76 fp 0x000070000a7b0928 Unknown symbol
  pc 0x00000001060a4a6e fp 0x000070000a7b0960 Unknown symbol
  pc 0x000000010560197d fp 0x000070000a7b09d8 Unknown symbol
  pc 0x0000000102b77b53 fp 0x000070000a7b0a70 dart::DartEntry::InvokeCode(dart::Code const&, dart::Array const&, dart::Array const&, dart::Thread*)+0xe3
  pc 0x0000000102b777e1 fp 0x000070000a7b0b10 dart::DartEntry::InvokeFunction(dart::Function const&, dart::Array const&, dart::Array const&, unsigned long)+0x291
  pc 0x0000000102b7a927 fp 0x000070000a7b0b80 dart::DartLibraryCalls::HandleMessage(dart::Object const&, dart::Instance const&)+0x217
  pc 0x0000000102bd2099 fp 0x000070000a7b0d70 dart::IsolateMessageHandler::HandleMessage(std::__2::unique_ptr<dart::Message, std::__2::default_delete<dart::Message> >)+0x5d9
  pc 0x0000000102c16246 fp 0x000070000a7b0e00 dart::MessageHandler::HandleMessages(dart::MonitorLocker*, bool, bool)+0x1d6
  pc 0x0000000102c16fd3 fp 0x000070000a7b0e80 dart::MessageHandler::TaskCallback()+0x2c3
  pc 0x0000000102dccbb4 fp 0x000070000a7b0f10 dart::ThreadPool::WorkerLoop(dart::ThreadPool::Worker*)+0x194
  pc 0x0000000102dcd58e fp 0x000070000a7b0f60 dart::ThreadPool::Worker::Main(unsigned long)+0x14e
  pc 0x0000000102cfbe17 fp 0x000070000a7b0fb0 dart::ThreadStart(void*)+0xa7
  pc 0x00007fff6b666109 fp 0x000070000a7b0fd0 _pthread_start+0x94
  pc 0x00007fff6b661b8b fp 0x000070000a7b0ff0 thread_start+0xf
-- End of DumpStackTrace
[exit     : sp(0) fp(0x70000a7afe18) pc(0)]
[stub     : sp(0x70000a7afe28) fp(0x70000a7afe50) pc(0x105602362)]
[dart     : sp(0x70000a7afe60) fp(0x70000a7afec0) pc(0x11cda9114) package:_fe_analyzer_shared/src/parser/parser_impl.dart_Parser_parseTopLevelMethod ]
[dart     : sp(0x70000a7afed0) fp(0x70000a7aff98) pc(0x11cda1b40) package:_fe_analyzer_shared/src/parser/parser_impl.dart_Parser_parseTopLevelMemberImpl ]
[dart     : sp(0x70000a7affa8) fp(0x70000a7afff8) pc(0x11cd9e61f) package:_fe_analyzer_shared/src/parser/parser_impl.dart_Parser_parseTopLevelDeclarationImpl ]
[dart     : sp(0x70000a7b0008) fp(0x70000a7b0068) pc(0x11cd9bc99) package:_fe_analyzer_shared/src/parser/parser_impl.dart_Parser_parseUnit ]
[dart     : sp(0x70000a7b0078) fp(0x70000a7b0130) pc(0x11c97204d) file:///Users/aam/p/d/dart-sdk/sdk/pkg/front_end/test/parser_suite.dart_TokenStep_run ]
[dart     : sp(0x70000a7b0140) fp(0x70000a7b01d0) pc(0x11c971489) package:testing/src/chain.dart_ChainContext_run__async_op_doStep__async_op_<anonymous closure>__async_op ]
[dart     : sp(0x70000a7b01e0) fp(0x70000a7b0210) pc(0x1060aab9d) dart:async__AsyncAwaitCompleter@4048458_start ]
[dart     : sp(0x70000a7b0220) fp(0x70000a7b0268) pc(0x11c97044e) package:testing/src/chain.dart_ChainContext_run__async_op_doStep__async_op_<anonymous closure> ]
[dart     : sp(0x70000a7b0278) fp(0x70000a7b02e8) pc(0x11c96fe6d) dart:async_Future_Future._<anonymous closure> ]
[dart     : sp(0x70000a7b02f8) fp(0x70000a7b0360) pc(0x11c967503) dart:async_::__rootRun@4048458 ]
[dart     : sp(0x70000a7b0370) fp(0x70000a7b03d0) pc(0x11c967338) dart:async_::__rootRun@4048458__rootRun@4048458 ]
[dart     : sp(0x70000a7b03e0) fp(0x70000a7b0470) pc(0x11c966733) dart:async__CustomZone@4048458_run ]
[dart     : sp(0x70000a7b0480) fp(0x70000a7b04e0) pc(0x11c96fc05) dart:async__CustomZone@4048458_runGuarded ]
[dart     : sp(0x70000a7b04f0) fp(0x70000a7b0530) pc(0x11c96faac) dart:async__CustomZone@4048458_bindCallbackGuarded_<anonymous closure> ]
[dart     : sp(0x70000a7b0540) fp(0x70000a7b05a8) pc(0x11c967634) dart:async_::__rootRun@4048458 ]
[dart     : sp(0x70000a7b05b8) fp(0x70000a7b0618) pc(0x11c967338) dart:async_::__rootRun@4048458__rootRun@4048458 ]
[dart     : sp(0x70000a7b0628) fp(0x70000a7b06b8) pc(0x11c966733) dart:async__CustomZone@4048458_run ]
[dart     : sp(0x70000a7b06c8) fp(0x70000a7b0718) pc(0x11c96f91f) dart:async__CustomZone@4048458_bindCallback_<anonymous closure> ]
[dart     : sp(0x70000a7b0728) fp(0x70000a7b0768) pc(0x11c96f769) dart:async_Timer__createTimer@4048458_<anonymous closure> ]
[dart     : sp(0x70000a7b0778) fp(0x70000a7b07c0) pc(0x1060a4b76) dart:core__Closure@0150898_call ]
[dart     : sp(0x70000a7b07d0) fp(0x70000a7b0850) pc(0x11c96eaa8) dart:isolate__Timer@1026248__runTimers@1026248 ]
[dart     : sp(0x70000a7b0860) fp(0x70000a7b0888) pc(0x11c96cb81) dart:isolate__Timer@1026248__handleMessage@1026248 ]
[dart     : sp(0x70000a7b0898) fp(0x70000a7b08d0) pc(0x11c96c9fa) dart:isolate__Timer@1026248__handleMessage@1026248__handleMessage@1026248 ]
[dart     : sp(0x70000a7b08e0) fp(0x70000a7b0928) pc(0x1060a4b76) dart:core__Closure@0150898_call ]
[dart     : sp(0x70000a7b0938) fp(0x70000a7b0960) pc(0x1060a4a6e) dart:isolate__RawReceivePortImpl@1026248__handleMessage@1026248 ]
[entry    : sp(0x70000a7b0970) fp(0x70000a7b09d8) pc(0x10560197d)]
[1]    34384 abort      xcodebuild/DebugX64/dart --pause_isolates_on_start --disable_dart_dev   

[aam]

Here is incremental dill with compiled expression:

main = <No Member>;
library from "evaluate:source" as sou {

  class #DebugClass extends core::Object {
    method /* from org-dartlang-debug:synthetic_debug_expression */ :Eval(dynamic beforeStart, dynamic externalToken, dynamic beforeType, dynamic typeInfo, dynamic getOrSet, dynamic name, dynamic nameIsRecovered) → dynamic
      return cod::templateExpectedAfterButGot.{cod::Template::withArguments};
  }
}

[aam]

https://github.com/dart-lang/sdk/blob/master/runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc#L2763 assumes that there are no const static gets except of special case of internal vm references in the incoming kernel. For this expression though kernel does have static get for templateExpectedAfterButGot which breaks that assumption.

cc @askeksa-google @mkustermann

[askeksa-google]

That would seem to indicate that front-end constant evaluation was not performed properly for the evaluated expression.

Does the front end do anything different regarding constant evaluation when compiling for expression evaluation?

[mkustermann]

Our invariant is that constants themselves are evaluated by CFE. Usages of constants are not necessarily folded away during constant evaluation - though in certain cases they are. IIRC StaticGets of constant fields are such a case. See pkg/front_end/lib/src/fasta/kernel/constant_evaluator.dart:

  Expression visitStaticGet(StaticGet node) {
    final Member target = node.target;
    if (target is Field && target.isConst) {
      ...
      if (shouldInline(target.initializer)) {
        return evaluateAndTransformWithContext(node, node);
      }
    }
    ...
  }

The shouldInline calls backend.shouldInlineConstant which should return true.

@jensjoha Is the constant evaluator run for expression compilation?