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Subject: Ann: HAC v.0.085
From: Gautier write-only address <gautier_niouzes@hotmail.com>
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Xref: reader02.eternal-september.org comp.lang.ada:61003
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HAC (HAC Ada Compiler) is a small, quick, open-source Ada compiler,
covering a subset of the Ada language.
HAC is itself fully programmed in Ada.

Web site: http://hacadacompiler.sf.net/
Source repository #1: https://sf.net/p/hacadacompiler/code/HEAD/tree/
Source repository #2: https://github.com/zertovitch/hac

* Improvements:

    HAC_Integer (internal name in HAC_Sys.Defs), i.e. HAC's Integer
        type, is now 64 bit.
    HAC_Float (i.e. `Real` in HAC programs) has now System.Max_Digits
        digits accuracy.
    Added range constraints, like: ` subtype Answer_Range is Character
        range 'a' .. 'z' `.
    Added membership test, like: ` x [not] in a .. b `.
    Several additions to HAC_Pack.
    Better I/O error handling.
    The whole system (Compiler and VM run-time) builds on both
        GNAT and ObjectAda64.

* Fixes ([hand_washing] all bugs stem from SmallAda [/hand_washing]):

    Recursive calls to main procedure were mistaken as calls to
        "standard" procedures in HAC_Pack
    Block identification used main program's identifier instead
        of its nesting.
    EXIT statement on FOR loop implied stack corruption for several
        nested FOR loops.
    EXIT statements within IF statements didn't work properly.
    Priority levels in expressions were not conform to
        the Ada Reference Manual's. Most visible change: needless
        brackets can now be removed around logical expressions.

* Test suite: added new 19 programs to the 12 existing tests.
    The 19 source files are named exm/aoc/2020/aoc_2020_*.adb,
    solutions to the Advent of Code 2020 puzzles.

Enjoy!