libc-top-half/README.md

   1 Code in the musl directory is based on musl revision
   2 e97681d6f2c44bf5fa9ecdd30607cb63c780062e, which is v1.1.22, from
   3 git://git.musl-libc.org/musl.
   4
   5 Whole files which are unused are omitted. Changes to upstream code are wrapped
   6 in preprocessor directives controlled by the macro `__wasilibc_unmodified_upstream`.
   7
   8 Some major known missing areas include:
   9  - threads
  10  - aio
  11  - setjmp
  12  - signals
  13  - ipc
  14  - termios
  15  - nss
  16  - environment variables
  17  - timezones
  18  - non-builtin locales
  19  - TIOCGWINSZ (because cloudabi lacks it; affects isatty, line buffering for stdout)
  20  - O\_CLOEXEC, O\_NOCTTY (because cloudabi lacks them)