[release] Add changelog entry for breaking mirrors change
TBR=vegorov@google.com
Change-Id: I38d43e86fce90d22672eaf2386a82135772e7345
Reviewed-on: https://dart-review.googlesource.com/c/89287
Reviewed-by: Alexander Thomas <athom@google.com>
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b5f3887..166c567 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -40,6 +40,31 @@
## 2.1.1-dev.1.0
+### Dart VM
+
+In previous releases it was possible to violate static types using dart:mirrors but this bug is fixed now. Meaning that the code below would run without any TypeErrors and print "impossible" output.
+
+```dart
+import 'dart:mirrors';
+
+class A {
+ void method(int v) {
+ if (v != null && v is! int) {
+ print("This should be impossible: expected null or int got ${v}");
+ }
+ }
+}
+
+void main() {
+ final obj = A();
+ reflect(obj).invoke(#method, ['not-an-number']);
+}
+```
+
+Only code that already violates static typing will break.
+
+See Issue [#35611](https://github.com/dart-lang/sdk/issues/35611) for more details.
+
### Tool Changes
#### Analyzer
