• %u (7/7) Apr 24 2009 Is there anyway to work around this compiler problem temporarily? Thank...
• Andrei Alexandrescu (35/44) Apr 25 2009 Either get traits.d from svn, or paste this code into it:

%u <no where.com> writes:

Is there anyway to work around this compiler problem temporarily?  Thanks.

/dmd/linux/bin/../bin/../../src/phobos/std/traits.d(1011): Error: static
assert  "Type const(int) does not have an Unsigned counterpart"
/dmd/linux/bin/../bin/../../src/phobos/std/traits.d(2454): Error: template
instance std.traits.Unsigned!(const(int)) error instantiating
/dmd/linux/bin/../bin/../../src/phobos/std/conv.d(2454): Error:
Unsigned!(const(int)) is used as a type

Andrei Alexandrescu <SeeWebsiteForEmail erdani.org> writes:

%u wrote:
 Is there anyway to work around this compiler problem temporarily?  Thanks.
 
 /dmd/linux/bin/../bin/../../src/phobos/std/traits.d(1011): Error: static
 assert  "Type const(int) does not have an Unsigned counterpart"
 /dmd/linux/bin/../bin/../../src/phobos/std/traits.d(2454): Error: template
 instance std.traits.Unsigned!(const(int)) error instantiating
 /dmd/linux/bin/../bin/../../src/phobos/std/conv.d(2454): Error:
 Unsigned!(const(int)) is used as a type
 

Either get traits.d from svn, or paste this code into it:

template Unsigned(T) {
     static if (is(T == byte)) alias ubyte Unsigned;
     else static if (is(T == short)) alias ushort Unsigned;
     else static if (is(T == int)) alias uint Unsigned;
     else static if (is(T == long)) alias ulong Unsigned;
     else static if (is(T == ubyte)) alias ubyte Unsigned;
     else static if (is(T == ushort)) alias ushort Unsigned;
     else static if (is(T == uint)) alias uint Unsigned;
     else static if (is(T == ulong)) alias ulong Unsigned;
     else static if (is(T == char)) alias char Unsigned;
     else static if (is(T == wchar)) alias wchar Unsigned;
     else static if (is(T == dchar)) alias dchar Unsigned;
     else static if(is(T == enum))
     {
         static if (T.sizeof == 1) alias ubyte Unsigned;
         else static if (T.sizeof == 2) alias ushort Unsigned;
         else static if (T.sizeof == 4) alias uint Unsigned;
         else static if (T.sizeof == 8) alias ulong Unsigned;
         else static assert(false, "Type " ~ T.stringof
                            ~ " does not have an Unsigned counterpart");
     }
     else static if (is(T == immutable))
     {
         alias immutable(Unsigned!(Unqual!T)) Unsigned;
     }
     else static if (is(T == const))
     {
         alias const(Unsigned!(Unqual!T)) Unsigned;
     }
     else static assert(false, "Type " ~ T.stringof
                        ~ " does not have an Unsigned counterpart");
}


Andrei