Welcome Pino Toscano as #curl commit author 1394: github.com/curl/curl/pull/1797…
build: enable _GNU_SOURCE on GNU/Hurd by pinotree · Pull Request #17975 · curl/curl
Unconditionally enable _GNU_SOURCE when building on GNU/Hurd; this way it is possible to properly use/rely on GNU extensions e.g. accept4(), memrchr(), and the GNU strerror_r().GitHub