https://issues.dlang.org/show_bug.cgi?id=12796

          Issue ID: 12796
           Summary: std.string toLower array conversion.
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Phobos
          Assignee: nobody@puremagic.com
          Reporter: damianday@hotmail.co.uk

import std.string;
char[64] w1;
w1 = w1.toLower;

std\uni.d(6954): Error: e2ir: cannot cast result of type char[] to type
char[64]

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