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digitalmars.D.learn - warning: pointer not aligned at address

reply Andrew Edwards <edwards.ac gmail.com> writes:
When compiled with any dmd compiler from 2.069.0 through present 
(2.074.0), https://rosettacode.org/wiki/100_doors#D produces the 
following linker warning:

ld: warning: pointer not aligned at address 0x10004FCEB 
(_D51TypeInfo_S3std5range13__T4iotaTiTmZ4iotaFimZ6Result6__initZ 
+ 24 from doors100.o)

[65 other lines removed for brevity]

ld: warning: pointer not aligned at address 0x100050C7D 
(_D11TypeInfo_xb6__initZ + 16 from doors100.o)

specific compilers checked:
dmd-2.068.0	dmd-2.068.1	dmd-2.068.2	dmd-2.069.0	dmd-2.070.0	dmd-2.071.2	dmd-2.073.1	dmd-2.073.2	dmd-2.074.0

What's the proper way to address these warnings? The code is 
linked and works as expected but, to me, there is just something 
about those warnings that cries out for attention.

Is there something I can do to align this code or is this 
something that needs to be addressed in the compiler?

Thanks,
Andrew
Apr 11
next sibling parent Andrew Edwards <edwards.ac gmail.com> writes:
Conveniently the site is down immediately after I posted that so 
here is the code to which I was referring:

import std.stdio, std.algorithm, std.range;

enum DoorState : bool { closed, open }
alias Doors = DoorState[];

Doors flipUnoptimized(Doors doors) pure nothrow {
     doors[] = DoorState.closed;

     foreach (immutable i; 0 .. doors.length)
         for (ulong j = i; j < doors.length; j += i + 1)
             if (doors[j] == DoorState.open)
                 doors[j] = DoorState.closed;
             else
                 doors[j] = DoorState.open;
     return doors;
}

Doors flipOptimized(Doors doors) pure nothrow {
     doors[] = DoorState.closed;
     for (int i = 1; i ^^ 2 <= doors.length; i++)
         doors[i ^^ 2 - 1] = DoorState.open;
     return doors;
}

void main() {
     auto doors = new Doors(100);

     foreach (const open; [doors.dup.flipUnoptimized,
                           doors.dup.flipOptimized])
         iota(1, open.length + 1).filter!(i => open[i - 
1]).writeln;
}
Apr 11
prev sibling parent reply Matt Whisenhunt <mattwhisenhunt gmail.com> writes:
 ld: warning: pointer not aligned at address 0x100050C7D
Are you running macOS and recently installed an update to Xcode? I ran into this today as well. Looks like other have too: https://issues.dlang.org/show_bug.cgi?id=17289
Apr 11
parent Andrew Edwards <edwards.ac gmail.com> writes:
On Wednesday, 12 April 2017 at 03:18:32 UTC, Matt Whisenhunt 
wrote:
 ld: warning: pointer not aligned at address 0x100050C7D
Are you running macOS and recently installed an update to Xcode? I ran into this today as well. Looks like other have too: https://issues.dlang.org/show_bug.cgi?id=17289
Yes, I do indeed use macOS and am on the latest version. I spun up a Ubuntu vm and in works correctly there. Thanks.
Apr 12