http://d.puremagic.com/issues/show_bug.cgi?id=7012

           Summary: Pure vector operations
           Product: D
           Version: D2
          Platform: x86
        OS/Version: Windows
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: druntime
        AssignedTo: nobody@puremagic.com
        ReportedBy: bearophile_hugs@eml.cc


--- Comment #0 from bearophile_hugs@eml.cc 2011-11-25 16:44:15 PST ---
I think vector ops need to become pure to allow code like:


void main() pure nothrow {
    int[3] a = [1, 2, 2];
    int[3] b = [10, 20, 20];
    immutable int[3] c = a[] + b[];
}


DMD 2.057head gives:

test.d(4): Error: cannot implicitly convert expression (a[] + b[]) of type
int[] to const(immutable(int)[])

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hsteoh@quickfur.ath.cx changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hsteoh@quickfur.ath.cx


--- Comment #1 from hsteoh@quickfur.ath.cx 2013-07-09 08:55:08 PDT ---
On latest git HEAD, dmd gives:

test.d(4): Error: Array operation a[] + b[] not implemented

So at least the message is more helpful. But it's still not working yet.

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bearophile_hugs@eml.cc changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |WORKSFORME


--- Comment #2 from bearophile_hugs@eml.cc 2013-07-09 10:02:30 PDT ---
This compiles:

void main() pure nothrow {
    int[3] a = [1, 2, 2];
    int[3] b = [10, 20, 20];
    int[3] c = void;
    c[] = a[] + b[];
}


The error message caused by this line of code is not related to purity:

immutable int[3] c = a[] + b[];

So this is closed.

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