[Issue 3801] New: CTFE: this.arr[i] cannot be evaluated at compile time for structs

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=3801

           Summary: CTFE: this.arr[i] cannot be evaluated at compile time
                    for structs
           Product: D
           Version: 2.040
          Platform: Other
        OS/Version: Windows
            Status: NEW
          Severity: blocker
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: ludwig at informatik.uni-luebeck.de


--- Comment #0 from Sönke Ludwig <ludwig at informatik.uni-luebeck.de> 2010-02-14 07:45:33 PST ---
A static array contained inside a struct is not accessible during CTFE. Because
of this, it seems impossible (since some versions) to define compile-time
constants of such structures (for example tuple vectors or matrices).

---
struct S {
  int arr[1];

  this(int x){
    arr[0] = x; // (this.arr[0u]) = x cannot be evaluated at compile time
  }
}

immutable S s_constant = S(1); // Error: cannot evaluate __ctmp1.this(1) at
compile time
---

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