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

https://github.com/dkwo/void-packages singu
https://github.com/void-linux/void-packages/pull/39866

singular: update to 4.3.1p2 (fix gcc 12 build)
I tested the changes in this PR: built and checked on x86_64 using the gcc 12 PR.
(Even the non-musl version had the same failure with gcc 12.)
Had to use patchversion p2 otherwise it would still fail (with different errors).
@tornaria @leahneukirchen @Duncaen 

A patch file from https://github.com/void-linux/void-packages/pull/39866.patch is attached