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-NEWS for ghdl (Dunoon Edition)
-
-New in 0.35 (XXXX-XX-XX)
-* Assert and report messages are sent to stdout (#394)
-
-New in 0.34 (2017-08-15)
-* Display stack backtraces on errors or assert failures
-* Compile scripts for vendor libraries (Xilinx, Altera, osvvm, vunit)
-* Use SSE2 for mcode backend
-* Mode backend ported to x86_64
-* Support cocotb (https://github.com/potentialventures/cocotb)
-* Main repository is now on github: https://github.com/tgingold/ghdl
-* Docs available on rtd: https://ghdl.readthedocs.org/en/latest/
-* Speed improved.
-* New option --psl-report, to report status of psl assert and cover.
-* vhdl 2008: support nested packages
-
-New in 0.33 (2015-10-04)
-* Improve support of vhdl 2008
-* Support OSVVM 2015 (http://osvvm.org)
-* Support vunit (https://github.com/LarsAsplund/vunit)
-* Many bugs fixed
-
-New in 0.32 (2014-11-XX)
-* Updated to build with gcc-4.9.2.
-* Partial support of VHDL-2008 (available with --std=08):
-* support of new std.env package.
-* support of added features in std.textio package
-* support of all standard IEEE packages.
-* support of new operations (relation operators, maximum and minimum, unary
-  reduction operators)
-* support of boolean_vector, integer_vector, real_vector.
-* support of process(all).
-* support of generic packages and interface package declarations.
-* support of block comments (aka delimited comments)
-* support of implicitely defined to_string functions.
-* Support OSVVM 2014_01
-* Bugs fixed
-
-New in 0.31 (2014-01-XX)
-* Updated to build with gcc-4.8.2.
-* Supports OSVVM (Open-Source VHDL Verification Methodology) (see osvvm.org)
-  in its VHDL-2002 form.
-* Adds 'image and 'value attributes for all required datatypes
-* Many bugs and support issues fixed.
-* New home on https://sourceforge.net/projects/ghdl-updates/
-
-New in 0.30
-Never released, swith to Dunoon Edition.
-
-New in 0.29 (2010-01-09)
-* Initial implementation of embedded PSL assertions.
-* Improve speed of non-sensitized processes.
-* Improve speed of string case statement (dichotomy instead of linear search).
-* bug fix and improvments in SDF annotator.
-* bug fix when the bound of a string literal type is not locally static.
-* bug fix: gcov crash
-
-New in 0.28 (2009-09-17)
-* Add --std=08 to enable vhdl 2008 features.
-* Support all-sensitized processes from vhdl 2008.
-* bug fix: handle 'pos/'leftof/'rightof/'succ/'pred in concurrent statements.
-* bug fix: overloaded resolution functions.
-* bug fix: direct drivers elaboration for unconstrained array signals.
-* Documentation typos (thanks to Peter Huewe).
-* many minor bugs fixed.
-
-New in 0.27 (2008-07-01)
-* Improve SDF annotation (handles much more annotations)
-* Add --ieee-asserts= option to control assert messages from ieee packages.
-* bug fix: aliases in port map
-* bug fix: crash during elaboration for top entities with ports/generic
-* bug fix: crash when string literal in aggregate.
-* bug fix: concatenation with an array subtype element.
-* bug fix: non-static subtype used by type conversions in associations.
-* bug fix: clear timeout in wait for.
-* minor bugs fixed.
-
-New in 0.26 (2007-04-08)
-* GHDL_PREFIX environment variable overrides default installation prefix.
-* simulation speed improved with 'direct drivers'.
-* windows version: exceptions are caught
-* windows version: use executable path instead of registry for prefix
-* bug fix: individual association by expression (was not working)
-* bug fix: individual association of string
-* bug fix: within windows code generator
-* bug fix (windows): large local variables crashed
-* bug fix: crash when overloaded aggregate target.
-* bug fix: forbid individual association with open
-* bug fix: crash when bad array prefix
-* bug fix: correctly extract sensitivity of record aggregate
-
-New in 0.25 (2006-08-11)
-* bug fix: ieee math libraries available when --ieee=synopsys.
-* bug fix: 'image in package bodies.
-* bug fix: scan of fp literals.
-* bug fix: interface identifier is checked for conformance rules.
-* bug fix: avoid a crash in case of error in configuration specification.
-* bug fix: non-static choice in unidim case are now correctly checked.
-* bug fix: do not crash in case of bad use of incomplete type.
-* bug fix: 'range are not expressions.
-* bug fix: handle file declaration in concurrent procedure calls.
-* bug fix: correctly handle static 'image attribute.
-* bug fix: handle in-conversion for signal associated with an expression.
-* bug fix: emit an error when a function tries to exit without a return.
-* vpi functions to schedules values.
-* math_real now works under windows.
-* documentation updated for windows.
-* filename/line number displayed for range error during signal update.
-
-New in 0.24 (2006-06-25)
-* bug fix: correctly handle empty file name.
-* bug fix: correctly handle unused subprograms of protected types.
-* bug fix: avoid a crash if unused library are use'd.
-* bug fix: avoid crashes during error reports.
-* bug fix: add a missing case array conversion.
-* bug fix: build on x86_64.
-* bug fix: code generated for conversion after mod/rem (windows version).
-* bug fix: -fexplicit crashed with std.standard functions.
-* bug fix: handle recursion of pure/wait checks.
-* bug fix: correctly handle error cases of user attributes
-* bug fix: time and character read procedure of std.textio.
-* bug fix: initialize by value parameters (instead of copy-in).
-* Handle enums with more than 256 elements.
-* Relax expr static rules in 93c to analyze Xilinx core lib from 8.1
-* man page (ghdl.1) added.
-* windows installer improved
-
-New in 0.23 (2006-05-16)
-* bug fix: handle implicit conversion in resolution functions.
-* bug fix: missing implicit conversion added.
-* bug fix: avoid a crash in error.
-
-New in 0.22 (2006-03-28)
-* direntry added in ghdl.texi
-* bug fix: avoid crash if type conversion is indexed/sliced.
-* bug fix: do not allow anymore uncomplete individual association
-* bug fix: missing check on array association
-* bug fix: check bounds for val attribute on enumerated type.
-* bug fix: array inequality of locally static expressions evaluated.
-* bug fix: configuration issue.
-* bug fix: --warn-no-vital-generic is now working.
-* Documentation updated (explain bug in Xilinx unisim library).
-* Updated to gcc 4.1
-* math_real updated.
-
-New in 0.21 (2005-12-18)
-* bug fix: line number for some bound violation messages.
-* bug fix: improved message error for deferred constants.
-* bug fix: file parameter for functions.
-* bug fix: universal real divided by integer handled in locally static expr.
-* bug fix: std_ulogic types and arrays are known by vpi.
-* bug fix: missing space added in VCDs for integers.
-* bug fix: CR+LF is also end of line for std.textio.readline.
-* bug fix: avoid a crash if parse error on choice.
-* bug fix: handle 'image in nested subprograms.
-* bug fix: handle 'image for floating point types.
-* bug fix: do not use varargs C calls.
-* bug fix: handle missing EOL for readline.
-* local optimizations (loops, indexed name).
-* simulation speed improved by 20% due to processes mngt optimizations.
-* stack-switching code ported to x86_64 (amd64/em64t).
-* stack-switching code ported to ia64.
-* bug fixes for x86_64.
-* --syn-binding option extended (see documentation).
-
-New in 0.20 (2005-10-15)
-* stack memory usage improved for shortcurt operations.
-* gtkwave now displays nice waves for bit and std_ulogic signals.
-* time unit is displayed in assert/report message.
-* -fexplicit option added.
-* integers are now written in VCD files.
-* hash table added for design_units (speed optimization).
-* range checks slightly optimized.
-* --vcdz run time option added.
-* improved error message for invalid expressions.
-* grt now compiles with GNAT-GPL-2005 (use a GNAT bug work-around).
-* bug fix: handle more types for --dump-rti and --wave.
-* bug fix: 'last_event and 'last_active (bad value returned when no previous
-  event or activity).
-* bug fix: 'image attribute for physical types (was bad unit).
-* bug fix: 'image attribute for locally static integers.
-* bug fix: for reading .ghw files.
-* bug fix: in --xref.
-
-New in 0.19 (2005-08-17)
-* bug fix: internal error (missing close_temp for implicit read)
-* bug fix: --xref-html: avoid to reanalyze unit.
-* bug fix: handle implicit conversion for 'image.
-* bug fix: aggregate assigned to an aggregate: avoid crash.
-* bug fix: array attributes on unconstrained array: avoid crash.
-* bug fix: 'last_event returns time'high if no event.
-* bug fix: 'last_event on array (uninitialized variable).
-* bug fix: allow calling rising_edge with a port of mode buffer.
-* bug fix: allow aliases of unconstrained arrays.
-* bug fix: bound error on aggregate with an unused other association.
-* bug fix: catch indexed/sliced component (was crashing).
-* bug fix: catch index/slice of a type conversion (was crashing).
-* bug fix: handle bad component specification in conf (was crashing).
-* bug fix: missing ports in component (was crashing).
-* bug fix: component configurations were dicarded by bug in some cases.
-* bug fix: no more unused warnings for subprograms in architectures
-  (they may be used in configuration).
-* bug fix: allow conversion in component configuration.
-* bug fix: conversion in associations with not statically defined array
-  signals.
-* ADAFLAGS has been replaced by GHDL_ADAFLAGS to ease compilation.
-* ieee.math_real and ieee.math_complex added (only partially, based on a
-  draft).
-* current time is printed with assert/report messages.
-* stack switch assembly code ported to powerpc-linux.
-* documentation on how to use grt from Ada added.
-* allow indexes of indexed names to be non-static in case statements (93c only)
-  (this is not standard, but I can't see why it should be required).
-* unbound ports of entities are now reported with --warn-binding.
-* some error or warning messages improved.
-* --wave option added to dump waveforms (using ghw file format).
-
-New in 0.18 (2005-03-12)
-* bug fix: in textio.read for time.
-* bug fix: file_close does not crash if file was already closed.
-* bug fix: spurious unused warnings for protected types.
-* bug fix: allow subtype names in slice during sensitivity extraction.
-* bug fix: correctly set the default value of collapsed ports.
-* bug fix: handling of stack2 (aka large concatenation bug).
-* Keep last line number to speed-up line number look-up (improvement).
-* --warn-default-binding added, --warn-binding rewritten.
-* 'value implemented for integer numbers.
-
-New in 0.17 (2005-02-26)
-* command --elab-run added.
-* Code generation for aggregate improved.
-* bug fix: port map with expression (corner case ?).
-* Library name of option --work= is checked.
-* bug fix: forbid empty extended identifiers.
-* --no-run option added to prevent simulation (may be used to disp tree only).
-* disp signal name in error when multiple sources drive an unresolved signal.
-* -m/--gen-makefile now handle several libraries.
-* dependences are not stored anymore in libraries (shorter/faster).
-* bug fix: enumeration literal xrefs.
-* mentor version of ieee library is now provided.
-* bug fix: non-object name in sensitivity list crashed.
-* handling of universal types is more consistent with LRM
-  (almost corner cases).
-* iterator and indexes whose bounds were universal expressions are now
-  of type integer or erroneous, according to the weird LRM rules.
-* handle selected name as entity name in architecture/configuration.
-* bug fix: correctly handle alias of signals in processes.
-
-New in 0.16 (2005-01-02)
-* bug fix: better handling of errors in type conversion.
-* bug fix: few uninitialized variables in ghdl itself caught.
-* std.textio: readline has no limits on line length.
-* bug fix: parse error: 'begin' in aggregates.
-* bug fix: bad 'unused subprogram' warnings.
-* command -r (run) added.
-
-New in 0.15 (2004-10-13)
-* library file format modified to handle relative paths.
-* install fixed to use relative paths.
-* internal change: ortho API modified (constant are not anymore expressions).
-
-New in 0.14 (2004-08-29)
-* bug fix: resolution function can be an expanded name.
-* bug fix: missing type check in a corner case.
-* bug fix: emit an error when EOF is reached while a text file is read.
-* bug fix: std.textio.read for negative number.
-* bug fix: std.textio.read [integer]: correctly handle end of line.
-* bug fix: parameters of protected type: handled and checked.
-* bug fix: gen_tree.c modified to work with sparc.
-* pretty printing in HTML command (--pp-html) added.
-* xref generation in HTML command (--xref-html) added.
-* syntax checking command (-s) added.
-* Code generation in whole command (-c files -e unit) added.
-* warns for unused subprograms.
-* bug box added to help bug reports.
-* -s (syntax check) command added.
-* Missing grt subprogram to close non-text file added.
-* maximum line length of std.textio.readline extended to 512 characters.
-* std.textio.readline assert error on truncated lines.
-* Handle P32 and P64 in --trace-signals
-* sequentials statements are not canonicalized (should be faster).
-* DESTDIR added in Makefile to ease packaging.
-* for -m command, re-parse modified files of the work library.
-* Many checks added on interfaces.
-* Many checks added on associations, better handling of conversions.
-* Checks for unassociated entity ports at elaboration.
-
-New in 0.13 (2004-06-26)
-* support of 64bits integers and 32bits time (not yet user available)
-* handle 'high and 'low attributes on non-locally static types and subtypes.
-* Many warning switches added (to control output of warnings).
-* --gen-makefile mode added to ghdl (to generate a Makefile)
-* alias identifier restrictions of vhdl-02 implemented.
-* declarative region for architecture from vhdl-02 implemented.
-* buffer port association rules of vhdl-02 implemented.
-* method operator restrictions of vhdl-02 implemented.
-* 'driving and 'driving_value implemented.
-* run-time bound check error message now contains file name and line number.
-* strings are not stored anymore with the identifiers.
-* parser does not back-track anymore.
-* bug fix: name clash in generated .s files (arch and port/generic names).
-* bug fix: implicit conversion of signal parameters.
-* bug fix: handle locally static type conversion of arrays.
-* bug fix: stabilize during elaboration of an unconstrained signal.
-* bug fix: revert previous vhdl87 conf spec bug fix, according to INT-1991
-           issue 27.
-* bug fix: multiple visibility of declarations (eg: direct and alias).
-* bug fix: names attribute of non-object aliases.
-
-New in 0.12 (2004-05-30)
-* simulation speed improved (2 fold) due to reduced activity optimization.
-* type conversion handled in associations
-* make mode of ghdl improved.
-* bug fix: attribute specification
-* bug fix: allow discrete type marks in choices
-* bug fix: handling of generate statement for VCD
-* bug fix: allow dereference in variable associations
-* bug fix: allow function conversion in block port map
-* bug fix: vhdl87: apply configuration specification inside generate stmts.
-* bug fix: catch non-passive concurrent procedure calls in entity.
-* bug fix: association of an unconstrained port with an expression.
-* bug fix: declaring an uncons. array subtype of an uncons. array subtype.
-
-New in 0.11.1 (2004-04-24)
-* bug fix: corner case of signal not updated
-* bug fix: handle 'stable, 'quiet with a paramater > 0
-* bug fix: typos (missing '+ ') in sparc.S
-
-New in 0.11 (2004-04-17)
-* bug fix: in code generation for an aggregate.
-* bug fix: run-time check of ascending order of projected transactions.
-* bug fix: empty sequence of stmts in case alternatives (unidim array).
-* bug fix: evaluation of locally static 'range attribute.
-* signal collapsing improved.
-* simulation kernel speed improved (maybe 5x faster).
-* --lines mode of ghdldrv added.
-* boolean signals are now dumped in vcd files.
-* bug fix: implicit conversion in formal function convertor.
-* bug fix: return type is a type mark.
-
-New in 0.10 (2004-02-28)
-* architecture with many instances can be compiled with less memory.
-* --stats option added to the simulator, to evaluate performance.
-* signals are now collapsed between instances, if possible.
-* simulation is about 3x faster.
-* sparc port available (source only).
-* more checks added for attribute specification.
-* bug fixed: absolute source files.
-* chop command added (split files by design unit).
-* bug fixed: empty sequence of statements in case alternatives.
-
-New in 0.9 (2004-02-01)
-* VITAL level 0 restrictions checks added.
-* VITAL 2000 packages provided.
-* run-time information (such as signal names) rewritten.
-* SDF support added (partial and experimental).
-* bug fixed: allow elaboration even if no package body if the package is
-  present in a file but not used by the hierarchy.
-* bug fixed: delay_length range is pre-elaborated (was not in v93).
-* bug fixed: crashed when a design unit is not found at elaboration.
-* bug fixed: allow association of 'stable, 'quiet... with signal interfaces.
-* bug fixed: concurrent procedure call creates a non-sensitized process.
-* bug fixed: effective value of non-scalar resolved signal might not be set.
-
-New in 0.8 (2003-11-05)
-* protected types (from 1076a/1076-2000) implemented.
-* file declarations are finalized in subprograms.
-* an exit call-back has been added in the run-time library.
-* internal modifications (nodes are stored in a table).
-* signal declaration not allowed in processes (bug fixed).
-* name of generated executable can be set with '-o' option.
-* IVI (ivi.sourceforge.org) support through a few VPI subprograms.
-* pure and wait checks added.
-* out ports are correctly dumped in VCD files.
-* several bugs fixed.
-
-New in 0.7 (2003-08-02)
-* layout of internal nodes improved.
-* incremental binding (vhdl93).
-* association of in port with expressions (vhdl93).
-* instantiation added in hierarchy (bug fixed).
-* individual association of subelements by expression (bug fixed).
-* --disp-time option added.
-* --stop-delta option is working (bug fixed).
-* make mode (ghdl -m) rewritten.
-* 'simple_name, 'path_name and 'instance_name added (vhdl93).
-* correctly handle operators names at function call (bug fixed).
-* several small bugs fixed.
-
-New in 0.6 (2003-06-09)
-* internal modifications (single linked list used instead of arrays).
-* bug fixed: xnor on bit and boolean is working.
-* Mentor version of std_logic_arith is provided.
-* postponed handled (vhdl 93).
-* declarations allowed in a generate statement (vhdl 93).
-* bug fixed: selected_name list in use clauses.
-* non object aliases handled (vhdl93).
-* signatures handled (vhdl93).
-* many other small bug fixes.
-
-New in 0.5 (2003-05-10)
-* foreign attribute handled.  You can now call subprograms defined in a foreign
-  language (such as C or Ada).
-* ghdl entry point added: you can start the VHDL simulation from your own
-  program.
-* bug fixed: triple use.
-* bug fixed: incomplete types
-
-New in 0.4.1 (2003-04-07)
-* bug fixed in the vcd output.
-
-New in 0.4 (2003-04-02)
-* libgrt does not depend on GNAT library anymore.
-  Installation requirements are reduced.
-* 'delayed attribute implemented.
-* 'transaction attribute implemented.
-* unaffected (from vhdl-93) implemented.
-* ghdl action '--disp-standard' prints the std.standard package.
-* exponentiation operator ("**") implemented for all integer and floating
-  point types.
-* bug fix: subprogram interfaces are now elaborated.
-* many other small bug fixes.
-
---------------------------------------------------
-
-Contributors to ghdl:
-
-Tristan Gingold    (sole author of ghdl as a whole)
-Brian Drummond     (gcc4.8.2 update, OSVVM port, some bugfixes)
-David Koontz       (Mac OSX builds, LRM compliance work, bugfix analyses)
-Joris van Rantwijk (Debian packaging)
-Brian Davis        (Windows Mcode builds)
-Adam Jensen        (FreeBSD builds)
-Felix Bertram      (VPI interface)
-
-with apologies to anyone who ought to be on this list but isn't.
-Thanks also to all those who have reported bugs and support issues,
-and often patches and testcases to either:
-https://gna.org/bugs/?group=ghdl
-or
-https://sourceforge.net/p/ghdl-updates/tickets/
-