tree 368bc876479740bbc5bf57e9375aff38708f7e33
parent e82a20b1801da638061c946026e3654aeccfa588
author Stephen Adams <sra@google.com> 1470438783 -0700
committer Stephen Adams <sra@google.com> 1470438783 -0700

Avoid modifying the set returned by getInterceptorsOn()

The returned set is shared.

This program generates a broken short-circuit interceptor ($n -> $din) due to modifying the cached shared set {n} to {d,i,n}
--------
J.toInt$0$n = function(receiver) {
  return J.getInterceptor$din(receiver).toInt$0(receiver);
};
--------
import 'package:expect/expect.dart';

@NoInline()
@AssumeDynamic()
confuse(x) => x;

@NoInline()
foo(x) {
  print(x.toInt());
  bar(x);
}

@NoInline()
bar(x) {
  print(x.toInt());
  print(x.runtimeType);
}

main() {
  int i = confuse(1);
  foo(i);
  double d = confuse(2.3);
  foo(d);
}
--------

TBR=sigmund@google.com

Review URL: https://codereview.chromium.org/2215133003 .