We automatically enable _DEFAULT_SOURCE if _GNU_SOURCE is defined.
Rather than having even more optional methods undefined unless
_GNU_SOURCE manually is, just change all remaining guarts to
use _DEFAULT_SOURCE instead.
Fixes#19095.
Change-Id: I5c7baf40b7fb37913e24279589fc1ae706448a45
Reviewed-on: https://review.haiku-os.org/c/haiku/+/8330
Reviewed-by: Adrien Destugues <[email protected]>
Reviewed-by: waddlesplash <[email protected]>
Tested-by: Commit checker robot <[email protected]>
Augustin Cavalier
90dca2bc8e