In the following example, `Functor::method()` inappropriately triggers a
diagnostic that `outer()` is blocking by allocating memory.
```
void outer() [[clang::nonblocking]]
{
struct Functor {
int* ptr;
void method() { ptr = new int; }
};
}
```
---------
Co-authored-by: Doug Wyatt <dwyatt@apple.com>
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