Strange error in DGC for Arm (2.0.59 with gcc 4.7.2)

[Timofei Bolshakov]

Hello!

I got strange problem.
When I am trying to send a message containing a struct of size 30 
I am getting a strange exception:

core.exception.AssertError@/home/tbolshakov/x-tools/arm-unknown-linux-gnueabi-gdc/lib/gcc/arm-unknown-linux-gnueabi/4.7.2/include/d/std/variant.d(280): 
target must be non-null

The code looks like:
//         enum ove the byte     string     string                
     uint ushort    struct
send( tid, MessageTag.SPTRecord, gwmac_str, 
mac2HexString(t[0].idup), utc, ms, aStruct );

Does anybody have an idea why? Does anybody have an idea hw to 
fix it?

I have DGC version 2.0.59 made with gcc 4.7.2 (crosstool-ng 
1.18.0).