S.popFront is not @safe, and S is not a template. So no inferrence.
Oops, minimized a bit too much. Corrected test case: ``` import std;
struct S {
@safe:
int[3] front = [10, 20, 30];
bool empty = false;
void popFront() {empty = true;}
}
void main() @safe {
S.init.map!((return ref x) => x[]).joiner.writeln;
}
```
It indeed still errors with -dip1000, but without -dip1000 it
compiles now interestingly.
