Build gdc on Windows - GDB compatibility

[Vadim Lopatin via D.gnu]

On Wednesday, 3 February 2016 at 13:50:56 UTC, Johannes Pfau 
wrote:
> (Pre-)Alpha quality binaries are available, but we don't want to
> advertise these on the homepage:
> ftp://ftp.gdcproject.org/binaries/5.2.0/x86_64-w64-mingw32/gdc-5.2.0+2.066.1.7z
> ftp://ftp.gdcproject.org/binaries/5.2.0/i686-w64-mingw32/gdc-5.2.0+2.066.1.7z

Binaries generated by GDC/mingw have a problem with debugging 
using GDB.

Setting of breakpoints, stepping by lines work ok.

Showing of local variables for frame works strange

-stack-list-variables --thread 1 --frame 0 --simple-values

Instead of locals, I see a list of some global static variables, 
like typeinfo and init values, e.g.:

     variables = [
             {
                 name = 
"5TypeInfo_S4core8demangle16__T6mangleTFZPvZ6mangleFNaNbNfAxaAaZ11DotSplitte()",
                 type = "TypeInfo_Struct"
         },
             {
                 name = 
"std.uni.SliceOverIndexed!(int[]).SliceOverIndexed.__init",
                 type = "const struct SliceOverIndexed"
         },

No local variables are shown.

Is it GDC or GDB issue?