When trying to build latest HEAD (currently commit `482dd8ac375853c5362828d40a96e6480bd92449` AKA tag `v1.40.0`) on NetBSD/amd64 11.99.3 of October 14th, 2025 with Go 1.25.3 the build fails as follows: ``` $ go build -v modernc.org/sqlite/lib # modernc.org/sqlite/lib lib/sqlite_netbsd_amd64.go:112447:5: mu.enter undefined (type mutex has no field or method enter) lib/sqlite_netbsd_amd64.go:112448:11: mu.leave undefined (type mutex has no field or method leave) ``` This was noticed while trying to package pkgsrc packages depending on `modern.c/sqlite` v1.39.0.