[Issue 22653] New: @safe @nogc delegate should allocate but doesn't, calls member function on dead object

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=22653

          Issue ID: 22653
           Summary: @safe @nogc delegate should allocate but doesn't,
                    calls member function on dead object
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: major
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: iamthewilsonator at hotmail.com

```
import std;

void main() @safe @nogc
{
    auto what = exfiltrate();
    what();
}

auto exfiltrate() @safe @nogc
{
    S2 s2;
    s2.temp = &s2.s.foo;
    return (s2.bar());
}

struct S2
{
    S s;
    void delegate() @safe @nogc temp;
    auto bar() @safe @nogc
    {
        return temp;
    }
}

struct S
{
    int i = 42;
    @nogc @safe ~this() { i = 0; } 
    void foo() @trusted @nogc
    {
        printf("ok %d", i);
    }
}
```
This should not compile, it does and prints `ok 0`, meaning it got called on a
dead object

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