[Issue 11228] New: alias this confuses static array copy

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=11228

           Summary: alias this confuses static array copy
           Product: D
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: monarchdodra at gmail.com


--- Comment #0 from monarchdodra at gmail.com 2013-10-11 15:47:20 PDT ---
Scenario: Do a straight up "Array = Array". YOu must compile with -w to see it.

//----
struct S 
{
    int[2] ii;
    alias ii this;
}
void main()
{
    S s;
    int[2] ii;
    ii = ii; //OK!
    ii = s; //Warning: explicit element-wise assignment (ii)[] = (s)[] is
better than ii = s
}
//----

"ii = ii;" triggers normal static array to static array copy. No need to slice.
When calling "ii = s;" though, the compiler complains that you didn't slice
your array. This is wrong since "ii" is a static array, and "s" aliases to a
compatible static array. However, my guess is the compiler choses to see it as
dynamic array assignment, and that is the reason why it complains.

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------