Failed to compile unbiased-inverse-volume-rendering branch

[pekCs]

I have compiled master branch's Mitsuba3.But when I compiled Mitsuba3 this project branch On Windows,an error has occured,it as follows:

First line means "gp" is an unknown override specifier.Second line means the type specifier is missing.

[merlinND]

Hello @pekCs,

This is the first time I see this compiler error, and unfortunately I don't know what causes this issue in your environment.
This file was not modified by this branch, so I'm wondering if the other versions of Mitsuba compile correctly or if you encounter the same error?

As a total guess, could it be that X86Gp or X86 are being defined as macros in one of the Windows headers?