There is a new pull request by bobertlo against master on the void-packages repository

https://github.com/bobertlo/void-packages avr-gcc
https://github.com/void-linux/void-packages/pull/15023

avr-gcc: update to 9.2.0
[ci skip]

A patch file from https://github.com/void-linux/void-packages/pull/15023.patch is attached