================
@@ -122,17 +135,19 @@ class Environment {
///
/// `Prev` and `Current` must be assigned to the same storage location in
/// `PrevEnv` and `CurrentEnv`, respectively.
- virtual Value *widen(QualType Type, Value &Prev, const Environment
&PrevEnv,
- Value &Current, Environment &CurrentEnv) {
+ virtual std::optional<WidenResult> widen(QualType Type, Value &Prev,
----------------
martinboehme wrote:
How are we going to deal with the fact that this API change breaks existing
overrides? (There's an existing
[override](https://github.com/google/crubit/blob/d51d5d004caa1d7c6cf5341d1fab22f5bae02018/nullability/pointer_nullability_analysis.cc#L1752)
in Crubit's nullability check.)
https://github.com/llvm/llvm-project/pull/87233
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