Snapshot gcc-9-20211223 is now available on
  https://gcc.gnu.org/pub/gcc/snapshots/9-20211223/
and on various mirrors, see http://gcc.gnu.org/mirrors.html for details.

This snapshot has been generated from the GCC 9 git branch
with the following options: git://gcc.gnu.org/git/gcc.git branch releases/gcc-9 revision e08ac1a01b18076520c12ab0997dd59d6b0b7ad8

You'll find:

 gcc-9-20211223.tar.xz                Complete GCC

  SHA256=3471eb642fd65261af439eb32fbddf9ad1b3ca395305e392f391392f2a1a5b20
  SHA1=5b7d79c3d451206aced06b0dd6013c237debaf4b

Diffs from 9-20211216 are available in the diffs/ subdirectory.

When a particular snapshot is ready for public consumption the LATEST-9
link is updated and a message is sent to the gcc list.  Please do not use
a snapshot before it has been announced that way.