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VM exits abnormally if a getter calls an abstract superclass getter #7420

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alan-knight opened this issue Dec 14, 2012 · 2 comments
Closed

VM exits abnormally if a getter calls an abstract superclass getter #7420

alan-knight opened this issue Dec 14, 2012 · 2 comments
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area-vm Use area-vm for VM related issues, including code coverage, FFI, and the AOT and JIT backends. closed-obsolete Closed as the reported issue is no longer relevant

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@alan-knight
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The following program yields the error below, and if run in the editor does not drop into the debugger. Instead the VM exits with status 255. The code is clearly incorrect, but only shows a warning in the editor, and seems like it should end up in noSuchMethod or some other more normal failure mode.

file:///Users/alanknight/dart/Scratch/missingsuper.dart': Error: line 9 pos 20: field or getter 'foo' not found in superclass
    print(super.foo);

abstract class Superclass {
  get foo;
}

class CallAbstractSuperMethod extends Superclass {
  get foo {
    print(x);
    print(super.foo);
    return 3;
  }
}

main() {
  new CallAbstractSuperMethod().foo;
}
@iposva-google
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Removed Priority-Medium label.
Added Priority-Unassigned label.

@dgrove
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dgrove commented Jan 15, 2015

FYI - with version 1.9.0-dev.3.0, this does the right thing:

Unhandled exception:
Class 'CallAbstractSuperMethod' has no instance getter 'x'.

NoSuchMethodError: method not found: 'x'
Receiver: Instance of 'CallAbstractSuperMethod'
Arguments: []
#­0 Object.noSuchMethod (dart:core-patch/object_patch.dart:45)
#­1 CallAbstractSuperMethod.foo (file:///usr/local/google/home/dgrove/tmp/x.dart:7:11)
#­2 main (file:///usr/local/google/home/dgrove/tmp/x.dart:14:33)
#­3 _startIsolate.<anonymous closure> (dart:isolate-patch/isolate_patch.dart:260)
#­4 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:142)

Added AssumedStale label.

@alan-knight alan-knight added Type-Defect area-vm Use area-vm for VM related issues, including code coverage, FFI, and the AOT and JIT backends. closed-obsolete Closed as the reported issue is no longer relevant labels Jan 15, 2015
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area-vm Use area-vm for VM related issues, including code coverage, FFI, and the AOT and JIT backends. closed-obsolete Closed as the reported issue is no longer relevant
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@dgrove @alan-knight @iposva-google