[Issue 9003] New: Nested structs smetimes have null context pointers in static struct

d-bugmail at puremagic.com d-bugmail at puremagic.com
Mon Nov 12 04:59:39 PST 2012


http://d.puremagic.com/issues/show_bug.cgi?id=9003

           Summary: Nested structs smetimes have null context pointers in
                    static struct
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Keywords: wrong-code
          Severity: major
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: verylonglogin.reg at gmail.com


--- Comment #0 from Denis Shelomovskij <verylonglogin.reg at gmail.com> 2012-11-12 15:59:31 MSK ---
Currently it's allowed to have nested struct fields in static struct (or global
templated structs):
---
void main() {
    int i;
    struct NS {
        int n;     // Comment to pass all asserts
     // int n2;    // Uncomment to fail assert on line 19
        int f() { return i; }
    }

    static struct SS1 {
        NS ns;
    }
    SS1 ss1;
    assert(ss1.ns != NS.init);

    static struct SS2 {
        NS ns1, ns2;
    }
    SS2 ss2;
    assert(ss2.ns1 != NS.init); // line 19
    assert(ss2.ns2 != NS.init);

    static struct SS3 {
        int i;
        NS ns;
    }

    SS3 ss3;
    assert(ss3.ns != NS.init);

    static struct SS4 {
        int i;
        NS ns1, ns2;
    }

    SS4 ss4;
    assert(ss4.ns1 != NS.init); // fails
    assert(ss4.ns2 != NS.init); // fails
}
---

Exactly same behavior for global templated structs like
`struct SS1(T) { T ns; }`.

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