dart2js bug with Random.nextInt((1<<32)-1)

[DartBot]

This issue was originally filed by [email protected]

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What steps will reproduce the problem?

1. Use the code :

import('dart:math');

num newId(){
  var id = new Random();
  return id.nextInt((1<<32)-1);
}

main(){
  var id = newId();
  print(id);
}

1. Run dart2js
2. Launch with Chrome

What is the expected output? What do you see instead?

I expect a random integer.
I see nothing.

What version of the product are you using? On what operating system?

Dart Edidor Version 0.1.0.201210082016, build 13393
Dart SDK version 13387
OS : ubuntu 12.04 64bits

Please provide any additional information below.

The code above works with Dart alone, but the javascript version doesn't.
If we replace (1<<32)-1 by (1<<31)-1 the javascript works.

[kasperl]

Added this to the M2 milestone.
Added Area-Dart2JS, Triaged labels.

[kasperl]

cc @floitschG.

[floitschG]

Unfortunately this is currently working as intended. When compiling to JavaScript, bit-operations are limited to 32 bits (therefore marking this bug as duplicate of bug 1533).

Normally this shouldn't just silently exit but throw an exception (since (1 << 31) - 1 becomes -1). If you don't get any exception please reopen with more information and I will investigate further.

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Added Duplicate label.
Marked as being merged into #1533.