Comment 0 for bug 1874127

The 0.40.x series is maintained as LTS release and will receive further bug fix releases in the future. See https://wiki.gnome.org/Projects/Vala

Previous 0.40.19 SRU https://bugs.launchpad.net/bugs/1863609

Falls under the standing GNOME SRU exception
https://wiki.ubuntu.com/StableReleaseUpdates#GNOME

Upstream changes since 0.40.19:

Vala 0.40.21
============
 * Various improvements and bug fixes:
  - codegen:
    + Don't append unreachable clean-up section of Block [#838]
    + Emit postconditions before free'ing local variables
    + Correctly access captured parameter in precondition of method [#144]
    + Append initializer for "_*_size_" of array field in internal struct
    + Avoid critical trying to serialize an unsupported type to Variant [#952]
    + Don't free value if property setter takes ownership [#953]
    + Correct field declaration for captured inline-allocated array [#954]
    + Correctly handle transformation of translated string-literal constants
    + Don't pass CCodeCastExpression to NULL-aware free macro [#953]
    + Fix binary 'in' operator on array with boxed value-typed needle [#951]
    + Add support for delegate parameters in signals [#205]
    + Use get_value_*_function() in GSignalModule.generate_marshaller() [#468]
    + Correctly handle signals returning real non-nullable struct [#466]
    + Use specified indices to access multidimensional array constants [#905]
    + codegen: Reduce code duplications when generation base-access
    + Fix base-access to non-abstract/non-virtual properties [#204]
    + Fix default of CCode.pos for parameters in async methods
  - vala:
    + Support struct initializer list in non-constant array [#949]
    + Handle unlock() statement in CodeWriter
    + Handle all ctors and dtors in CodeWriter
    + Consider boolean types are compatible with each other
    + Parse standalone integer/real literals as expression statement [#961]
    + Set default_construction_method in semantic-analyzer check if required
    + Fix cleaning of output in CodeContext.pkg_config_modversion()
    + Don't use possibly uninitialized backing field of package_name [#971]
    + Check assigned handler of dynamic signal before proceeding further
    + Don't perform version check on internal lambda method
    + Perform version check for types of non-external variable declarations
    + Quote symbol on report by version attribute check
    + Ensure non-empty argument list for "disconnect" before accessing it
  - girparser
    + Move special handling for certain parameters to process_callable()
    + Drop special handling of GLib.Data, GLib.PtrArray and GLib.String
    + Improve detection of AsyncReadyCallback/AsyncResult parameters [#340]
  - parser: Handle incomplete expression statements
  - testrunner: Compile and run tests separately
  - testrunner: Warnings and criticals should be fatal on compile time too

 * Bindings:
  - gio-2.0: Add "async_result_pos" attributes to *.call_with_unix_fd_list()
    [#340]
  - glib-2.0: Guard Pid.to_string() with GLIB_2_50 to deal with G_PID_FORMAT
  - gstreamer-app-1.0: Don't merge Src.push_buffer_*() signal with its method
    [#968]
  - gtk+-3.0: Update to 3.24.18
  - webkit2gtk-4.0: Update to 2.28.0 [#974]

Vala 0.40.20
============
 * Various improvements and bug fixes:
  - codegen:
    + Don't initialize stack-allocated array with local-constant length [#910]
    + Add destroy of parameter in vfunc of delegate property setter [#919]
    + Reset outdated array _size_ variable after use as ref parameter [#929]
    + Use memset to init inline-allocated array with non-constant size [#910]
  - vala:
    + Properly set CodeNode.error when reporting an error
    + Improve robustness of analyzer pass for language-servers [#911]
    + Add local-variables to current scope regardless its error state
    + Fix circular reference in Property/EnumValueType
    + Report an internal error for unavailable context and bail
    + Prevent possible stack-overflow in Class.is_subtype_of()
    + Fix search for Parameter.base_parameter
    + Use error() instead of Report.error() inside of CodeContext.get()
    + Accept enum-values as length for inline allocated arrays [#935]
    + Improve copy of required attributes from delegate to lamdba method
    + Inherit lambda parameter attributes from delegate
    + Inline-allocated array aren't instantiated with creation expression [#926]
  - Add missing CodeContext.pop() calls
  - girparser:
    + Report a warning for conflicting class and instance methods
    + Decrease return_array_length_idx for transformed function
    + Delay adding of "GLib.Object" prerequisite to interfaces
  - vapigen: Define "GOBJECT" corresponding to set profile of CodeContext [#933]
  - valadoc: Create and register current Vala.CodeContext properly
  - parser: Improve error message for invalid ArrayCreationExpression [#939]
  - testrunner: Pass G_DEBUG=fatal-warnings to invalid test
  - manual: Update from wiki.gnome.org

 * Bindings:
  - Add some fundamental deps files to improve --nostdpkg support [#911]
  - glib-2.0: Add binding for g_poll() [#924]
  - glib-2.0: Add binding for g_win32_ftruncate()
  - glib-2.0: Add missing IOChannel's win32 API
  - glib-2.0: Add missing "type_id"/"has_type_id" attributes to structs [#921]
  - glib-2.0: Memory profiling ("g_mem_*") is deprecated since 2.46
  - gio-2.0: Add binding for g_io_error_from_win32_error()