i am getting this error when building with 2.6.4 FPC X64. the fixes_3_0 works but causes issues with in lazarus.
fgl.pp(1494,21) Error: Identifier not found "Default"
fgl.pp(1690) Fatal: There were 1 errors compiling module, stopping
Fatal: Compilation aborted
make[7]: *** [buildrtl.ppu] Error 1
make[7]: Leaving directory `C:/LazarusExtras/fpc/Trunk/rtl/win64'
make[6]: *** [win64_all] Error 2
make[6]: Leaving directory `C:/LazarusExtras/fpc/Trunk/rtl'
make[5]: *** Error 2
make[5]: Leaving directory `C:/LazarusExtras/fpc/Trunk/compiler'
make[4]: *** [next] Error 2
make[4]: Leaving directory `C:/LazarusExtras/fpc/Trunk/compiler'
make[3]: *** [ppc1.exe] Error 2
make[3]: Leaving directory `C:/LazarusExtras/fpc/Trunk/compiler'
make[2]: *** [cycle] Error 2
make[2]: Leaving directory `C:/LazarusExtras/fpc/Trunk/compiler'
make[1]: *** [compiler_cycle] Error 2
make[1]: Leaving directory `C:/LazarusExtras/fpc/Trunk'
make: *** [build-stamp.x86_64-win64] Error 2