http://d.puremagic.com/issues/show_bug.cgi?id=4030

           Summary: Better object array literal type inference
           Product: D
           Version: future
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: DMD
        AssignedTo: nobody@puremagic.com
        ReportedBy: bearophile_hugs@eml.cc


--- Comment #0 from bearophile_hugs@eml.cc 2010-03-30 02:59:07 PDT ---
In the following D2 program the compiler can refuse the line 6, because it must refuse to guess (if p1 is an array of A or B).

But at line 7 the compiler has enough information to not guess (it's an array of A), so line 7 can be accepted by the compiler:


class A {}
class B : A {}
final class C1 : B {}
final class C2 : B {}
void main() {
    auto p1 = [new C1, new C2]; // line 6, don't guess
    A[]  p2 = [new C1, new C2]; // line 7, no need to guess
}

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http://d.puremagic.com/issues/show_bug.cgi?id=4030


klickverbot <code@klickverbot.at> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |code@klickverbot.at


--- Comment #1 from klickverbot <code@klickverbot.at> 2010-08-28 16:23:02 PDT ---
There is an even shorter example which fails on DMD 2.048:
---
class A {}
class B {}

void main() {
   Object[] foo = [ new A, new B ];
}
---

TDPL has: "The element type of the array is determined by agreement among all elements of the array, which is computed by means of the conditional operator ? : (anticipating § 2.3.16)."

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nfxjfg@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |nfxjfg@gmail.com
         Resolution|                            |DUPLICATE


--- Comment #2 from nfxjfg@gmail.com 2010-08-28 16:42:33 PDT ---
*** This issue has been marked as a duplicate of issue 3543 ***

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