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digitalmars.D.ide - Error while trying Mono-D debugging on OSX

Hello,

I'm trying to debug Mono-D project under OSX.
Installed Mono-D 2.13.5, Xamarin Studio 5.10, gdb 7.10 (installed 
with brew).
When trying to start debugging, I see error

     Debugger operation failed
     A syntax error in expression, near 'sizeof(void*)'

Does anyone know how to fix it?
Use different GDB version?

Best regards,
     Vadim
Nov 12 2015