Comment 0 for bug 1803138

Upstream changes since 0.42.2:

Vala 0.42.3
===========
 * Various improvements and bug fixes:
  - codegen:
    + Initialize internal temp-variables used as reference parameter
    + Improve ccode for fixed-length array parameters (#163)
    + Fix regex literal compile flags
    + Add prototype for *_register_type() function
    + Don't emit *_free() of derived compact classes
    + Add prototype for *_new() of abstact compact classes
  - girwriter: Fix ctype of out/ref and array parameters
  - ccode: Fix typo and actually check "end_decls" (#672)
  - abstract syntax tree:
    + Always analyze nodes after they are inserted into the AST
    + Add source_reference to local variable of catch-clause
    + Add missing replace_expression() implementations
    + Fix several construction/parenting issues
    + DataType for GLib.Error should be should resolved as ErrorType
  - libvaladoc: Add "unlock" to keywords in Highligher
  - posix:
    + Add replacement for G_(BEGIN|END)_DECLS
    + Don't check for GLib.Variant casting
  - testrunner: Reset $run_prefix before generating next test script
  - build: Unconditionally add conditional VALAFLAGS to make bootstrap
  - doc: Fix build of internal-api-docs
  - manual: Update from wiki.gnome.org

 * Bindings:
  - glib-2.0: Computing length once is enough in string.to_utf8()/splice()
  - glib-2.0: Add binding for g_test_add()
  - glib-2.0: Add array length to string.skip (#695)
  - gio-2.0: Result of DBusMessage.get_header() is unowned
  - gobject-2.0,gtk+-*.0: Fix some GLib.Value out/ref parameters
  - gstreamer: Update from 1.15+ git master
  - gtk+-4.0: Update to 3.94.0+b4b30b49

[Impact]
 * Affects all valac reverse-dependency on buildtime

[Test Case]
 * Mass-rebuild of rdepends can be found here
   https://launchpad.net/~ricotz/+archive/ubuntu/cosmic-vala-sru-0-42-3/+packages?batch=200&memo=0&start=0

[Regression Potential]
 * Not immediately while it requires an rdepend rebuild to manifest.

[Other Info]
 * Regular upstream maintenance releases are likely to happen every 1-2 months