tree ea6c946d321ddee4448658b51f035a08e90aeb72
parent 8db293ed70ecdcc9d1f57e2be7297b3b2fba0232
author Jens Johansen <jensj@google.com> 1543582637 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org> 1543582637 +0000

Fix rare crash in type inference engine

Before this CL, running fasta compile on these 3 tests would make it
crash in type inference because the enclosingClass on a constrcutor
is null:

tests/language_2/const_error_multiply_initialized_test.dart
tests/language_2/constructor_duplicate_final_test.dart
tests/language_2/field3_test.dart

Note that these tests are all multi-tests and they are here run
unprocessed. The compiler crashes only after issuing errors.
The crash likely happens because of multiple definitions of
constructors with the same name.

This is a cut-down version that crashed prior to this CL:

```
class C {
  final d;

  C() {}
  C(this.d) {}
}
```

Fixes #35258.

Change-Id: I350c55428932ef0ae76f78875177b08acf95cdfc
Reviewed-on: https://dart-review.googlesource.com/c/85363
Reviewed-by: Peter von der Ahé <ahe@google.com>
Commit-Queue: Jens Johansen <jensj@google.com>