https://issues.dlang.org/show_bug.cgi?id=14759

          Issue ID: 14759
           Summary: Inconsistent behaviour of array element-wise
                    operations
           Product: D
           Version: D2
          Hardware: x86_64
               URL: http://forum.dlang.org/thread/ymundssikvjdvshpsqlj@for
                    um.dlang.org
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P1
         Component: druntime
          Assignee: nobody@puremagic.com
          Reporter: schuetzm@gmx.net

import std.stdio;

    void main() {
        int[] a = [1,1,1,1];
        int[] b = [1,1,1,1];
        int[] c;
        int[2] d;

        c[] = a[] - b[];  // works
        c.writeln;        // []
        d[] = a[] - b[];  // works
        d.writeln;        // [0, 0]
        d[] = a[];        // throws!
        // object.Error@(0): Array lengths don't match for copy: 4 != 2
    }

In the case of subtraction, it assigns only as many elements as the destination has, but for direct assignment, it throws an error. This is clearly inconsistent. An error should be thrown in all cases, instead of silently dropping elements.

Reported by ixid: http://forum.dlang.org/thread/ymundssikvjdvshpsqlj@forum.dlang.org

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