* [PATCH] bison: Update to version 3.8.2
@ 2021-10-20 20:27 Adolf Belka
2021-10-21 10:11 ` Michael Tremer
0 siblings, 1 reply; 2+ messages in thread
From: Adolf Belka @ 2021-10-20 20:27 UTC (permalink / raw)
To: development
[-- Attachment #1: Type: text/plain, Size: 8675 bytes --]
- Update from 3.7.6 to 3.8.2
- Update rootfile
- Changelog
Noteworthy changes in release 3.8.2 (2021-09-25) [stable]
Fixed portability issues of bison on Cygwin.
Improvements in glr2.cc: add support for custom error messages (`%define
parse.error custom`), allow linking several parsers together.
Noteworthy changes in release 3.8.1 (2021-09-11) [stable]
The generation of prototypes for yylex and yyerror in Yacc mode is
breaking existing grammar files. To avoid breaking too many grammars, the
prototypes are now generated when `-y/--yacc` is used *and* the
`POSIXLY_CORRECT` environment variable is defined.
Avoid using `-y`/`--yacc` simply to comply with Yacc's file name
conventions, rather, use `-o y.tab.c`. Autoconf's AC_PROG_YACC macro uses
`-y`. Avoid it if possible, for instance by using gnulib's gl_PROG_BISON.
Noteworthy changes in release 3.8 (2021-09-07) [stable]
** Backward incompatible changes
In conformance with the recommendations of the Graphviz team
(https://marc.info/?l=graphviz-devel&m=129418103126092), `-g`/`--graph`
now generates a *.gv file by default, instead of *.dot. A transition
started in Bison 3.4.
To comply with the latest POSIX standard, in Yacc compatibility mode
(options `-y`/`--yacc`) Bison now generates prototypes for yyerror and
yylex. In some situations, this is breaking compatibility: if the user
has already declared these functions but with some differences (e.g., to
declare them as static, or to use specific attributes), the generated
parser will fail to compile. To disable these prototypes, #define yyerror
(to `yyerror`), and likewise for yylex.
** Deprecated features
Support for the YYPRINT macro is removed. It worked only with yacc.c and
only for tokens. It was obsoleted by %printer, introduced in Bison 1.50
(November 2002).
It has always been recommended to prefer `%define api.value.type foo` to
`#define YYSTYPE foo`. The latter is supported in C for compatibility
with Yacc, but not in C++. Warnings are now issued if `#define YYSTYPE`
is used in C++, and eventually support will be removed.
In C++ code, prefer value_type to semantic_type to denote the semantic
value type, which is specified by the `api.value.type` %define variable.
** New features
*** A skeleton for the D programming language
The "lalr1.d" skeleton is now officially part of Bison.
It was originally contributed by Oliver Mangold, based on Paolo Bonzini's
lalr1.java, and was improved by H. S. Teoh. Adela Vais then took over
maintenance and invested a lot of efforts to complete, test and document
it.
It now supports all the bells and whistles of the other deterministic
parsers, which include: pull/push interfaces, verbose and custom error
messages, lookahead correction, token constructors, internationalization,
locations, printers, token and symbol prefixes, etc.
Two examples demonstrate the D parsers: a basic one (examples/d/simple),
and an advanced one (examples/d/calc).
*** Option -H, --header and directive %header
The option `-H`/`--header` supersedes the option `--defines`, and the
directive %header supersedes %defines. Both `--defines` and `%defines`
are, of course, maintained for backward compatibility.
*** Option --html
Since version 2.4 Bison can be used to generate HTML reports. However it
was a two-step process: first bison must be invoked with option `--xml`,
and then xsltproc must be run to the convert the XML reports into HTML.
The new option `--html` combines these steps. The xsltproc program must
be available.
*** A C++ native GLR parser
A new version of the C++ GLR parser was added: "glr2.cc". It generates
"true C++11", instead of a C++ wrapper around a C parser as does the
existing "glr.cc" parser. As a first significant consequence, it supports
`%define api.value.type variant`, contrary to glr.cc.
It should be upward compatible in terms of interface, feature and
performance to "glr.cc". To try it out, simply use
%skeleton "glr2.cc"
It will eventually replace "glr.cc". However we need user feedback on
this skeleton. _Please_ report your results and comments about it.
*** Counterexamples
Counterexamples now show the rule numbers, and always show ε for rules
with an empty right-hand side. For instance
exp
↳ 1: e1 e2 "a"
↳ 3: ε • ↳ 1: ε
instead of
exp
↳ e1 e2 "a"
↳ • ↳ ε
*** Lookahead correction in Java
The Java skeleton (lalr1.java) now supports LAC, via the `parse.lac`
%define variable.
*** Abort parsing for memory exhaustion (C)
User actions may now use `YYNOMEM` (similar to `YYACCEPT` and `YYABORT`)
to abort the current parse with memory exhaustion.
*** Printing locations in debug traces (C)
The `YYLOCATION_PRINT(File, Loc)` macro prints a location. It is defined
when (i) locations are enabled, (ii) the default type for locations is
used, (iii) debug traces are enabled, and (iv) `YYLOCATION_PRINT` is not
already defined.
Users may define `YYLOCATION_PRINT` to cover other cases.
*** GLR traces
There were no debug traces for deferred calls to user actions. They are
logged now.
Noteworthy changes in release 3.7.6 (2021-03-08) [stable]
** Bug fixes
*** Reused Push Parsers
When a push-parser state structure is used for multiple parses, it was
possible for some state to leak from one run into the following one.
*** Fix Table Generation
In some very rare conditions, when there are many useless tokens, it was
possible to generate incorrect parsers.
Signed-off-by: Adolf Belka <adolf.belka(a)ipfire.org>
---
config/rootfiles/common/bison | 14 +++++++++++---
lfs/bison | 4 ++--
2 files changed, 13 insertions(+), 5 deletions(-)
diff --git a/config/rootfiles/common/bison b/config/rootfiles/common/bison
index 2fc2e6d1d..5cbbc1f8d 100644
--- a/config/rootfiles/common/bison
+++ b/config/rootfiles/common/bison
@@ -9,7 +9,6 @@
#usr/share/bison/m4sugar/foreach.m4
#usr/share/bison/m4sugar/m4sugar.m4
#usr/share/bison/skeletons
-#usr/share/bison/skeletons/README-D.txt
#usr/share/bison/skeletons/bison.m4
#usr/share/bison/skeletons/c++-skel.m4
#usr/share/bison/skeletons/c++.m4
@@ -20,6 +19,7 @@
#usr/share/bison/skeletons/d.m4
#usr/share/bison/skeletons/glr.c
#usr/share/bison/skeletons/glr.cc
+#usr/share/bison/skeletons/glr2.cc
#usr/share/bison/skeletons/java-skel.m4
#usr/share/bison/skeletons/java.m4
#usr/share/bison/skeletons/lalr1.cc
@@ -68,6 +68,10 @@
#usr/share/doc/bison/examples/c/calc/Makefile
#usr/share/doc/bison/examples/c/calc/README.md
#usr/share/doc/bison/examples/c/calc/calc.y
+#usr/share/doc/bison/examples/c/glr
+#usr/share/doc/bison/examples/c/glr/Makefile
+#usr/share/doc/bison/examples/c/glr/README.md
+#usr/share/doc/bison/examples/c/glr/c++-types.y
#usr/share/doc/bison/examples/c/lexcalc
#usr/share/doc/bison/examples/c/lexcalc/Makefile
#usr/share/doc/bison/examples/c/lexcalc/README.md
@@ -90,9 +94,13 @@
#usr/share/doc/bison/examples/c/rpcalc/Makefile
#usr/share/doc/bison/examples/c/rpcalc/rpcalc.y
#usr/share/doc/bison/examples/d
-#usr/share/doc/bison/examples/d/Makefile
#usr/share/doc/bison/examples/d/README.md
-#usr/share/doc/bison/examples/d/calc.y
+#usr/share/doc/bison/examples/d/calc
+#usr/share/doc/bison/examples/d/calc/Makefile
+#usr/share/doc/bison/examples/d/calc/calc.y
+#usr/share/doc/bison/examples/d/simple
+#usr/share/doc/bison/examples/d/simple/Makefile
+#usr/share/doc/bison/examples/d/simple/calc.y
#usr/share/doc/bison/examples/java
#usr/share/doc/bison/examples/java/README.md
#usr/share/doc/bison/examples/java/calc
diff --git a/lfs/bison b/lfs/bison
index 3a2681406..26df21aa8 100644
--- a/lfs/bison
+++ b/lfs/bison
@@ -24,7 +24,7 @@
include Config
-VER = 3.7.6
+VER = 3.8.2
THISAPP = bison-$(VER)
DL_FILE = $(THISAPP).tar.xz
@@ -45,7 +45,7 @@ objects =$(DL_FILE)
$(DL_FILE) = $(DL_FROM)/$(DL_FILE)
-$(DL_FILE)_MD5 = d61aa92e3562cb7292b004ce96173cf7
+$(DL_FILE)_MD5 = c28f119f405a2304ff0a7ccdcc629713
install : $(TARGET)
--
2.33.0
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] bison: Update to version 3.8.2
2021-10-20 20:27 [PATCH] bison: Update to version 3.8.2 Adolf Belka
@ 2021-10-21 10:11 ` Michael Tremer
0 siblings, 0 replies; 2+ messages in thread
From: Michael Tremer @ 2021-10-21 10:11 UTC (permalink / raw)
To: development
[-- Attachment #1: Type: text/plain, Size: 9042 bytes --]
Reviewed-by: Michael Tremer <michael.tremer(a)ipfire.org>
> On 20 Oct 2021, at 21:27, Adolf Belka <adolf.belka(a)ipfire.org> wrote:
>
> - Update from 3.7.6 to 3.8.2
> - Update rootfile
> - Changelog
> Noteworthy changes in release 3.8.2 (2021-09-25) [stable]
> Fixed portability issues of bison on Cygwin.
> Improvements in glr2.cc: add support for custom error messages (`%define
> parse.error custom`), allow linking several parsers together.
> Noteworthy changes in release 3.8.1 (2021-09-11) [stable]
> The generation of prototypes for yylex and yyerror in Yacc mode is
> breaking existing grammar files. To avoid breaking too many grammars, the
> prototypes are now generated when `-y/--yacc` is used *and* the
> `POSIXLY_CORRECT` environment variable is defined.
> Avoid using `-y`/`--yacc` simply to comply with Yacc's file name
> conventions, rather, use `-o y.tab.c`. Autoconf's AC_PROG_YACC macro uses
> `-y`. Avoid it if possible, for instance by using gnulib's gl_PROG_BISON.
> Noteworthy changes in release 3.8 (2021-09-07) [stable]
> ** Backward incompatible changes
> In conformance with the recommendations of the Graphviz team
> (https://marc.info/?l=graphviz-devel&m=129418103126092), `-g`/`--graph`
> now generates a *.gv file by default, instead of *.dot. A transition
> started in Bison 3.4.
> To comply with the latest POSIX standard, in Yacc compatibility mode
> (options `-y`/`--yacc`) Bison now generates prototypes for yyerror and
> yylex. In some situations, this is breaking compatibility: if the user
> has already declared these functions but with some differences (e.g., to
> declare them as static, or to use specific attributes), the generated
> parser will fail to compile. To disable these prototypes, #define yyerror
> (to `yyerror`), and likewise for yylex.
> ** Deprecated features
> Support for the YYPRINT macro is removed. It worked only with yacc.c and
> only for tokens. It was obsoleted by %printer, introduced in Bison 1.50
> (November 2002).
> It has always been recommended to prefer `%define api.value.type foo` to
> `#define YYSTYPE foo`. The latter is supported in C for compatibility
> with Yacc, but not in C++. Warnings are now issued if `#define YYSTYPE`
> is used in C++, and eventually support will be removed.
> In C++ code, prefer value_type to semantic_type to denote the semantic
> value type, which is specified by the `api.value.type` %define variable.
> ** New features
> *** A skeleton for the D programming language
> The "lalr1.d" skeleton is now officially part of Bison.
> It was originally contributed by Oliver Mangold, based on Paolo Bonzini's
> lalr1.java, and was improved by H. S. Teoh. Adela Vais then took over
> maintenance and invested a lot of efforts to complete, test and document
> it.
> It now supports all the bells and whistles of the other deterministic
> parsers, which include: pull/push interfaces, verbose and custom error
> messages, lookahead correction, token constructors, internationalization,
> locations, printers, token and symbol prefixes, etc.
> Two examples demonstrate the D parsers: a basic one (examples/d/simple),
> and an advanced one (examples/d/calc).
> *** Option -H, --header and directive %header
> The option `-H`/`--header` supersedes the option `--defines`, and the
> directive %header supersedes %defines. Both `--defines` and `%defines`
> are, of course, maintained for backward compatibility.
> *** Option --html
> Since version 2.4 Bison can be used to generate HTML reports. However it
> was a two-step process: first bison must be invoked with option `--xml`,
> and then xsltproc must be run to the convert the XML reports into HTML.
> The new option `--html` combines these steps. The xsltproc program must
> be available.
> *** A C++ native GLR parser
> A new version of the C++ GLR parser was added: "glr2.cc". It generates
> "true C++11", instead of a C++ wrapper around a C parser as does the
> existing "glr.cc" parser. As a first significant consequence, it supports
> `%define api.value.type variant`, contrary to glr.cc.
> It should be upward compatible in terms of interface, feature and
> performance to "glr.cc". To try it out, simply use
> %skeleton "glr2.cc"
> It will eventually replace "glr.cc". However we need user feedback on
> this skeleton. _Please_ report your results and comments about it.
> *** Counterexamples
> Counterexamples now show the rule numbers, and always show ε for rules
> with an empty right-hand side. For instance
> exp
> ↳ 1: e1 e2 "a"
> ↳ 3: ε • ↳ 1: ε
> instead of
> exp
> ↳ e1 e2 "a"
> ↳ • ↳ ε
> *** Lookahead correction in Java
> The Java skeleton (lalr1.java) now supports LAC, via the `parse.lac`
> %define variable.
> *** Abort parsing for memory exhaustion (C)
> User actions may now use `YYNOMEM` (similar to `YYACCEPT` and `YYABORT`)
> to abort the current parse with memory exhaustion.
> *** Printing locations in debug traces (C)
> The `YYLOCATION_PRINT(File, Loc)` macro prints a location. It is defined
> when (i) locations are enabled, (ii) the default type for locations is
> used, (iii) debug traces are enabled, and (iv) `YYLOCATION_PRINT` is not
> already defined.
> Users may define `YYLOCATION_PRINT` to cover other cases.
> *** GLR traces
> There were no debug traces for deferred calls to user actions. They are
> logged now.
> Noteworthy changes in release 3.7.6 (2021-03-08) [stable]
> ** Bug fixes
> *** Reused Push Parsers
> When a push-parser state structure is used for multiple parses, it was
> possible for some state to leak from one run into the following one.
> *** Fix Table Generation
> In some very rare conditions, when there are many useless tokens, it was
> possible to generate incorrect parsers.
>
> Signed-off-by: Adolf Belka <adolf.belka(a)ipfire.org>
> ---
> config/rootfiles/common/bison | 14 +++++++++++---
> lfs/bison | 4 ++--
> 2 files changed, 13 insertions(+), 5 deletions(-)
>
> diff --git a/config/rootfiles/common/bison b/config/rootfiles/common/bison
> index 2fc2e6d1d..5cbbc1f8d 100644
> --- a/config/rootfiles/common/bison
> +++ b/config/rootfiles/common/bison
> @@ -9,7 +9,6 @@
> #usr/share/bison/m4sugar/foreach.m4
> #usr/share/bison/m4sugar/m4sugar.m4
> #usr/share/bison/skeletons
> -#usr/share/bison/skeletons/README-D.txt
> #usr/share/bison/skeletons/bison.m4
> #usr/share/bison/skeletons/c++-skel.m4
> #usr/share/bison/skeletons/c++.m4
> @@ -20,6 +19,7 @@
> #usr/share/bison/skeletons/d.m4
> #usr/share/bison/skeletons/glr.c
> #usr/share/bison/skeletons/glr.cc
> +#usr/share/bison/skeletons/glr2.cc
> #usr/share/bison/skeletons/java-skel.m4
> #usr/share/bison/skeletons/java.m4
> #usr/share/bison/skeletons/lalr1.cc
> @@ -68,6 +68,10 @@
> #usr/share/doc/bison/examples/c/calc/Makefile
> #usr/share/doc/bison/examples/c/calc/README.md
> #usr/share/doc/bison/examples/c/calc/calc.y
> +#usr/share/doc/bison/examples/c/glr
> +#usr/share/doc/bison/examples/c/glr/Makefile
> +#usr/share/doc/bison/examples/c/glr/README.md
> +#usr/share/doc/bison/examples/c/glr/c++-types.y
> #usr/share/doc/bison/examples/c/lexcalc
> #usr/share/doc/bison/examples/c/lexcalc/Makefile
> #usr/share/doc/bison/examples/c/lexcalc/README.md
> @@ -90,9 +94,13 @@
> #usr/share/doc/bison/examples/c/rpcalc/Makefile
> #usr/share/doc/bison/examples/c/rpcalc/rpcalc.y
> #usr/share/doc/bison/examples/d
> -#usr/share/doc/bison/examples/d/Makefile
> #usr/share/doc/bison/examples/d/README.md
> -#usr/share/doc/bison/examples/d/calc.y
> +#usr/share/doc/bison/examples/d/calc
> +#usr/share/doc/bison/examples/d/calc/Makefile
> +#usr/share/doc/bison/examples/d/calc/calc.y
> +#usr/share/doc/bison/examples/d/simple
> +#usr/share/doc/bison/examples/d/simple/Makefile
> +#usr/share/doc/bison/examples/d/simple/calc.y
> #usr/share/doc/bison/examples/java
> #usr/share/doc/bison/examples/java/README.md
> #usr/share/doc/bison/examples/java/calc
> diff --git a/lfs/bison b/lfs/bison
> index 3a2681406..26df21aa8 100644
> --- a/lfs/bison
> +++ b/lfs/bison
> @@ -24,7 +24,7 @@
>
> include Config
>
> -VER = 3.7.6
> +VER = 3.8.2
>
> THISAPP = bison-$(VER)
> DL_FILE = $(THISAPP).tar.xz
> @@ -45,7 +45,7 @@ objects =$(DL_FILE)
>
> $(DL_FILE) = $(DL_FROM)/$(DL_FILE)
>
> -$(DL_FILE)_MD5 = d61aa92e3562cb7292b004ce96173cf7
> +$(DL_FILE)_MD5 = c28f119f405a2304ff0a7ccdcc629713
>
> install : $(TARGET)
>
> --
> 2.33.0
>
^ permalink raw reply [flat|nested] 2+ messages in thread
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2021-10-20 20:27 [PATCH] bison: Update to version 3.8.2 Adolf Belka
2021-10-21 10:11 ` Michael Tremer
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