VM crash on simple program using stdin

[DartBot]

This issue was originally filed by rice@google.com

---

The following test program crashes on startup on OS X 10.5.8 using a dart vm build @­r4617.

import("dart:io");

void main() {
  var stream = new StringInputStream(stdin);
  stream.lineHandler = () {
    var s = stream.readLine();
    if (s != null) {
      print(s);
    }
  };
}

$ dart Test.dart
/Volumes/WS/dart/dart/runtime/bin/eventhandler_macos.cc:109: error: Failed updating kqueue
Abort trap

(gdb) run Test.dart
Starting program: /Users/rice/bin/dart Test.dart
Reading symbols for shared libraries ++++. done
/Volumes/WS/dart/dart/runtime/bin/eventhandler_macos.cc:109: error: Failed updating kqueue

Program received signal SIGABRT, Aborted.
0x0011359b in dart::HeapPage::Contains (this=0x5000000, addr=84055912) at pages.h:26
26 return memory_->Contains(addr);
(gdb) where

­0 0x0011359b in dart::HeapPage::Contains (this=0x5000000, addr=84055912) at pages.h:26

­1 0x00112840 in dart::PageSpace::Contains (this=0x802e00, addr=84055912) at /Volumes/WS/dart/dart/runtime/vm/pages.cc:177

­2 0x000a521b in dart::Heap::Contains (this=0x400f90, addr=84055912) at /Volumes/WS/dart/dart/runtime/vm/heap.cc:107

­3 0x0001b28e in dart::Object::SetRaw (this=0xbfffead8, value=0x5029769) at object.h:3709

­4 0x0001b619 in dart::Library::initializeHandle (obj=0xbfffead8, raw_ptr=0x5029769) at object.h:1790

­5 0x0001b680 in dart::Library::Handle (islt=0x803800, raw_ptr=0x5029769) at object.h:1790

­6 0x0001b6a2 in dart::Library::Handle (raw_ptr=0x5029769) at object.h:1790

­7 0x000cd704 in dart::Function::ImplicitClosureFunction (this=0xbfffe9f0) at /Volumes/WS/dart/dart/runtime/vm/object.cc:3442

­8 0x00075b80 in dart::DRT_HelperResolveImplicitClosureFunction (isolate=0x803800, arguments={isolate_ = 0x803800, argc_ = 2, argv_ = 0xbfffeba0, retval_ = 0xbfffeba4}) at /Volumes/WS/dart/dart/runtime/vm/code_generator.cc:713

­9 0x00075d99 in dart::DRT_ResolveImplicitClosureFunction (arguments={isolate_ = 0x803800, argc_ = 2, argv_ = 0xbfffeba0, retval_ = 0xbfffeba4}) at /Volumes/WS/dart/dart/runtime/vm/code_generator.cc:684

­10 0x005400e2 in ?? ()

­11 0x005403f0 in ?? ()

­12 0x050c7f6f in ?? ()

­13 0x050c09e2 in ?? ()

­14 0x050c007d in ?? ()

­15 0x00090071 in dart::DartEntry::InvokeStatic (function=@0x843c48, arguments=@0xbffff308, optional_arguments_names=@0x843c50) at /Volumes/WS/dart/dart/runtime/vm/dart_entry.cc:88

­16 0x0000ac5a in Dart_InvokeStatic (library_in=0x805040, class_name_in=0x805048, function_name_in=0x805044, number_of_arguments=0, arguments=0x0) at /Volumes/WS/dart/dart/runtime/vm/dart_api_impl.cc:2027

­17 0x00003d9f in main (argc=2, argv=0xbffff45c) at /Volumes/WS/dart/dart/runtime/bin/main.cc:604

(gdb)

[DartBot]

This comment was originally written by rice@google.com

---

Added Area-VM label.

[iposva-google]

I was not able to reproduce this on Mac OS X 10.7.3. How reproducible is this in your setup?

---

Set owner to rice@google.com.

[iposva-google]

Added Triaged label.

[DartBot]

This comment was originally written by rice@google.com

---

I can repro every time.

[iposva-google]

This only reproduces on 10.5.8, so it is likely something to do with kqueue usage. As we should not continue to support 10.5 much longer I am adjusting the priority. Still it would be good to know if we are using the kqueue apis in a wrong fashion.

---

Set owner to @madsager.
Removed Priority-Medium label.
Added Priority-Low label.

[iposva-google]

Added Accepted label.

[madsager]

I have made the error message printed for these types of errors more informative. I cannot reproduce this. If someone could run this with a tip of tree Dart VM and post the resulting error message here that might provide a hint. Thanks.

[madsager]

I have never been able to reproduce this. Closing since I cannot take action on this. Please reopen if you see this again.

---

Added AssumedStale label.