dartc is too permissive of null operands (checked mode)

[DartBot]

This issue was originally filed by olov.la...@gmail.com

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Two examples of many:

main() {
  Expect.throws(() { print(1 < null); }); // dartc: false
  Expect.throws(() { print(1 - null); }); // dartc: NaN
}

=> Expect.throws() fails

[DartBot]

This comment was originally written by drfibonacci@google.com

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Added Area-Compiler, Triaged labels.

[DartBot]

This comment was originally written by zundel@google.com

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Leaving open. The question is about code generation issues, but static analysis could provide a warning in this case (using null in a boolean expression)

[kasperl]

Removed Area-Compiler label.
Added Area-Analyzer label.

[bwilkerson]

Added this to the Later milestone.

[bwilkerson]

Removed this from the Later milestone.
Added this to the M3 milestone.

[bwilkerson]

Removed this from the M3 milestone.
Added this to the M4 milestone.

[bwilkerson]

dartc has been deprecated in favor of the new analysis engine, and neither generate code anymore.

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Added WontFix label.

[clayberg]

Removed this from the M4 milestone.
Added this to the M5 milestone.