Snapshot gcc-12-20211212 is now available on
  https://gcc.gnu.org/pub/gcc/snapshots/12-20211212/
and on various mirrors, see http://gcc.gnu.org/mirrors.html for details.

This snapshot has been generated from the GCC 12 git branch
with the following options: git://gcc.gnu.org/git/gcc.git branch master revision 0b52083ea2c2dd9897031fdc3802a68fd4aa45ef

You'll find:

 gcc-12-20211212.tar.xz               Complete GCC

  SHA256=d25b06a064b6962fbb52b7ae7f15fccdc4b6bbe8d0933b04432339ee5d80ab9e
  SHA1=ebe339b707c57340a6c77dd614b1ecbca73448cb

Diffs from 12-20211205 are available in the diffs/ subdirectory.

When a particular snapshot is ready for public consumption the LATEST-12
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.