[Issue 7285] New: Implicit fixed-size array cast

[d-bugmail]

http://d.puremagic.com/issues/show_bug.cgi?id=7285

           Summary: Implicit fixed-size array cast
           Product: D
           Version: D2
          Platform: x86
        OS/Version: Windows
            Status: NEW
          Keywords: rejects-valid
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nob...@puremagic.com
        ReportedBy: bearophile_h...@eml.cc


--- Comment #0 from bearophile_h...@eml.cc 2012-01-12 18:27:03 PST ---
This code compiles, because the [0,0] dynamic array literal casts implicitly to
int[2]:


int[2] foo() {
    return [0, 0]; // OK
}
void main() {}


And of course this too compiles:


int[2] bar() {
    int[2] ab;
    return (true) ? ab : ab; // OK
}
void main() {}



But currently this code doesn't compile:


int[2] spam() {
    int[2] ab;
    return (true) ? ab : [0, 0]; // Error
}
void main() {}


DMD 2.058head:
test.d(3): Error: cannot implicitly convert expression (cast(int[])ab) of type
int[] to int[2u]

I think this isn't good.

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