================
@@ -180,3 +180,44 @@ void std_forward_rvalue_ref_safe(absl::optional<int>&&
opt) {
std::forward<absl::optional<int>>(opt).value();
}
+
+namespace std {
+
+template<typename T>
+class optional {
+public:
+ template <typename U>
+ optional& operator=(const U &u){
----------------
jcsxky wrote:
Using `absl::optional` would produce a compilation error.
```cpp
clang-tools-extra/test/clang-tidy/checkers/bugprone/Inputs/unchecked-optional-access/absl/types/optional.h:32:7:
note: candidate function (the implicit copy assignment operator) not viable:
no known conversion from 'int' to 'const optional<float>' for 1st argument
32 | class optional {
| ^~~~~~~~
```
https://github.com/llvm/llvm-project/pull/68510
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