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dart2js: Dead code for empty catch-block #27550

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fsc8000 opened this issue Oct 7, 2016 · 0 comments
Open

dart2js: Dead code for empty catch-block #27550

fsc8000 opened this issue Oct 7, 2016 · 0 comments
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@sigmundch
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area-web Use area-web for Dart web related issues, including the DDC and dart2js compilers and JS interop. web-dart2js

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@fsc8000
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fsc8000 commented Oct 7, 2016

@rakudrama

This program

main() {
  try {
    throw 123;
  } on dynamic {
  }
}

generates the following JS for main()

    main: function() {
      var exception;
      try {
        throw H.wrapException(123);
      } catch (exception) {
        H.unwrapException(exception);
      }
    }

It seems that there is always a call to unwrapException, even if the exception object is unused.
@vsmenon vsmenon added the area-web Use area-web for Dart web related issues, including the DDC and dart2js compilers and JS interop. label Jul 20, 2019
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@sigmundch sigmundch

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area-web Use area-web for Dart web related issues, including the DDC and dart2js compilers and JS interop. web-dart2js
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@sigmundch @vsmenon @fsc8000