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VM crashes when "const {}" is used as the default value for Iterable #36621

f3ath opened this Issue Apr 13, 2019 · 2 comments


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f3ath commented Apr 13, 2019

Dart VM version: 2.2.0 (Tue Feb 26 15:04:32 2019 +0100) on "linux_x64"
OS: Arch Linux

Code (foo.dart):

main() {}
foo({Iterable<String> a = const {}}) {}


$ dart foo.dart 
../../runtime/vm/compiler/frontend/ 2236: error: unreachable code
thread=4089, isolate=foo.dart:main()(0x55617d89bb00)
  [0x000055617baa67ac] dart::Profiler::DumpStackTrace(void*)
  [0x000055617baa67ac] dart::Profiler::DumpStackTrace(void*)
  [0x000055617bcd8e72] dart::Assert::Fail(char const*, ...)
  [0x000055617bc506b4] Unknown symbol
  [0x000055617bc5a74c] dart::kernel::TypeTranslator::SetupFunctionParameters(dart::Class const&, dart::Function const&, bool, bool, dart::kernel::FunctionNodeHelper*)
  [0x000055617ba00476] dart::kernel::KernelLoader::LoadProcedure(dart::Library const&, dart::Class const&, bool, long)
  [0x000055617b9fe937] dart::kernel::KernelLoader::FinishTopLevelClassLoading(dart::Class const&, dart::Library const&, dart::kernel::LibraryIndex const&)
  [0x000055617ba01ddf] dart::kernel::KernelLoader::FinishLoading(dart::Class const&)
  [0x000055617b96a5b5] dart::ClassFinalizer::FinalizeClass(dart::Class const&)
  [0x000055617b96b905] dart::ClassFinalizer::LoadClassMembers(dart::Class const&)
  [0x000055617ba272fb] dart::Class::EnsureIsFinalized(dart::Thread*) const
  [0x000055617ba51168] dart::Library::EnsureTopLevelClassIsFinalized() const
  [0x000055617ba54e9a] dart::Library::LookupLocalOrReExportObject(dart::String const&) const
  [0x000055617ba56d18] dart::Library::InvokeGetter(dart::String const&, bool, bool, bool) const
  [0x000055617bccaeb6] Dart_GetField
  [0x000055617b78197b] dart::bin::RunMainIsolate(char const*, dart::bin::CommandLineOptions*)
  [0x000055617b782807] dart::bin::main(int, char**)
  [0x000055617b783119] Unknown symbol
-- End of DumpStackTrace
Aborted (core dumped)

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aartbik commented Apr 15, 2019

Using sdk/out/DebugX64/dart, ToT of Dart runs fine:

$ dart foo.dart


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aartbik commented Apr 15, 2019

The has changed a lot recently due to all the CFE changes. Please run a more recent version and try again.

@aartbik aartbik closed this Apr 15, 2019

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