* Noteworthy changes in release ?.? (????-??-??) [?]
+** Incompatible changes
+
+*** Obsolete features
+
+ Support for YYFAIL is removed (deprecated in Bison 2.4.2).
+ Support for yystype and yyltype (instead of YYSTYPE and YYLTYPE)
+ is removed (deprecated in Bison 1.875).
+ Support for YYPARSE_PARAM is removed (deprecated in Bison 1.875).
+
+** Warnings
+
+*** Enhancements of the -Werror option
+
+ The -Werror=CATEGORY option is now recognized, and will treat specified
+ warnings as errors. The warnings need not have been explicitly activated
+ using the -W option, this is similar to what GCC 4.7 does.
+
+ For example, given the following command line, Bison will treat both
+ warnings related to POSIX Yacc incompatibilities and S/R conflicts as
+ errors (and only those):
+
+ $ bison -Werror=yacc,error=conflicts-sr input.y
+
+ If no categories are specified, -Werror will make all active warnings into
+ errors. For example, the following line does the same the previous example:
+
+ $ bison -Werror -Wnone -Wyacc -Wconflicts-sr input.y
+
+ (By default -Wconflicts-sr,conflicts-rr,deprecated,other is enabled.)
+
+ Note that the categories in this -Werror option may not be prefixed with
+ "no-". However, -Wno-error[=CATEGORY] is valid.
+
+ Note that -y enables -Werror=yacc. Therefore it is now possible to require
+ Yacc-like behavior (e.g., always generate y.tab.c), but to report
+ incompatibilities as warnings: "-y -Wno-error=yacc".
+
+*** The display of warnings is now richer
+
+ The option that controls a given warning is now displayed:
+
+ foo.y:4.6: warning: type clash on default action: <foo> != <bar> [-Wother]
+
+ In the case of warnings treated as errors, the prefix is changed from
+ "warning: " to "error: ", and the suffix is displayed, in a manner similar
+ to GCC, as [-Werror=CATEGORY].
+
+ For instance, where the previous version of Bison would report (and exit
+ with failure):
+
+ bison: warnings being treated as errors
+ input.y:1.1: warning: stray ',' treated as white space
+
+ it now reports:
+
+ input.y:1.1: error: stray ',' treated as white space [-Werror=other]
+
+*** Deprecated constructs
+
+ The new 'deprecated' warning category flags obsolete constructs whose
+ support will be discontinued. It is enabled by default. These warnings
+ used to be reported as 'other' warnings.
+
+*** Useless semantic types
+
+ Bison now warns about useless (uninhabited) semantic types. Since
+ semantic types are not declared to Bison (they are defined in the opaque
+ %union structure), it is %printer/%destructor directives about useless
+ types that trigger the warning:
+
+ %token <type1> term
+ %type <type2> nterm
+ %printer {} <type1> <type3>
+ %destructor {} <type2> <type4>
+ %%
+ nterm: term { $$ = $1; };
+
+ 3.28-34: warning: type <type3> is used, but is not associated to any symbol
+ 4.28-34: warning: type <type4> is used, but is not associated to any symbol
+
+*** Undefined but unused symbols
+
+ Bison used to raise an error for undefined symbols that are not used in
+ the grammar. This is now only a warning.
+
+ %printer {} symbol1
+ %destructor {} symbol2
+ %type <type> symbol3
+ %%
+ exp: "a";
+
+*** Useless destructors or printers
+
+ Bison now warns about useless destructors or printers. In the following
+ example, the printer for <type1>, and the destructor for <type2> are
+ useless: all symbols of <type1> (token1) already have a printer, and all
+ symbols of type <type2> (token2) already have a destructor.
+
+ %token <type1> token1
+ <type2> token2
+ <type3> token3
+ <type4> token4
+ %printer {} token1 <type1> <type3>
+ %destructor {} token2 <type2> <type4>
+
+*** Conflicts
+
+ The warnings and error messages about shift/reduce and reduce/reduce
+ conflicts have been normalized. For instance on the following foo.y file:
+
+ %glr-parser
+ %%
+ exp: exp '+' exp | '0' | '0';
+
+ compare the previous version of bison:
+
+ $ bison foo.y
+ foo.y: conflicts: 1 shift/reduce, 2 reduce/reduce
+ $ bison -Werror foo.y
+ bison: warnings being treated as errors
+ foo.y: conflicts: 1 shift/reduce, 2 reduce/reduce
+
+ with the new behavior:
+
+ $ bison foo.y
+ foo.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
+ foo.y: warning: 2 reduce/reduce conflicts [-Wconflicts-rr]
+ $ bison -Werror foo.y
+ foo.y: error: 1 shift/reduce conflict [-Werror=conflicts-sr]
+ foo.y: error: 2 reduce/reduce conflicts [-Werror=conflicts-rr]
+
+ When %expect or %expect-rr is used, such as with bar.y:
+
+ %expect 0
+ %glr-parser
+ %%
+ exp: exp '+' exp | '0' | '0';
+
+ Former behavior:
+
+ $ bison bar.y
+ bar.y: conflicts: 1 shift/reduce, 2 reduce/reduce
+ bar.y: expected 0 shift/reduce conflicts
+ bar.y: expected 0 reduce/reduce conflicts
+
+ New one:
+
+ $ bison bar.y
+ bar.y: error: shift/reduce conflicts: 1 found, 0 expected
+ bar.y: error: reduce/reduce conflicts: 2 found, 0 expected
+
+** Additional yylex/yyparse arguments
+
+ The new directive %param declares additional arguments to both yylex and
+ yyparse. The %lex-param, %parse-param, and %param directives support one
+ or more arguments. Instead of
+
+ %lex-param {arg1_type *arg1}
+ %lex-param {arg2_type *arg2}
+ %parse-param {arg1_type *arg1}
+ %parse-param {arg2_type *arg2}
+
+ one may now declare
+
+ %param {arg1_type *arg1} {arg2_type *arg2}
+
+** Java skeleton improvements
+
+ The constants for token names were moved to the Lexer interface. Also, it
+ is possible to add code to the parser's constructors using "%code init"
+ and "%define init_throws".
+
+** C++ skeletons improvements
+
+*** The parser header is no longer mandatory (lalr1.cc, glr.cc)
+
+ Using %defines is now optional. Without it, the needed support classes
+ are defined in the generated parser, instead of additional files (such as
+ location.hh, position.hh and stack.hh).
+
+*** Locations are no longer mandatory (lalr1.cc, glr.cc)
+
+ Both lalr1.cc and glr.cc no longer require %location.
+
+*** syntax_error exception (lalr1.cc)
+
+ The C++ parser features a syntax_error exception, which can be
+ thrown from the scanner or from user rules to raise syntax errors.
+ This facilitates reporting errors caught in sub-functions (e.g.,
+ rejecting too large integral literals from a conversion function
+ used by the scanner, or rejecting invalid combinations from a
+ factory invoked by the user actions).
+
+** Variable api.token.prefix
+
+ The variable api.token.prefix changes the way tokens are identified in
+ the generated files. This is especially useful to avoid collisions
+ with identifiers in the target language. For instance
+
+ %token FILE for ERROR
+ %define api.token.prefix "TOK_"
+ %%
+ start: FILE for ERROR;
+
+ will generate the definition of the symbols TOK_FILE, TOK_for, and
+ TOK_ERROR in the generated sources. In particular, the scanner must
+ use these prefixed token names, although the grammar itself still
+ uses the short names (as in the sample rule given above).
+
+** Renamed %define variables
+
+ The following variables have been renamed for consistency. Backward
+ compatibility is ensured, but upgrading is recommended.
+
+ lr.default-reductions -> lr.default-reduction
+ lr.keep-unreachable-states -> lr.keep-unreachable-state
+ namespace -> api.namespace
+
+** Variable parse.error
+
+ This variable controls the verbosity of error messages. The use of the
+ %error-verbose directive is deprecated in favor of "%define parse.error
+ verbose".
+
+** Semantic predicates
+
+ The new, experimental, semantic-predicate feature allows actions of the
+ form "%?{ BOOLEAN-EXPRESSION }", which cause syntax errors (as for
+ YYERROR) if the expression evaluates to 0, and are evaluated immediately
+ in GLR parsers, rather than being deferred. The result is that they allow
+ the programmer to prune possible parses based on the values of run-time
+ expressions.
+
+** The directive %expect-rr is now an error in non GLR mode
+
+ It used to be an error only if used in non GLR mode, _and_ if there are
+ reduce/reduce conflicts.
+
+* Noteworthy changes in release ?.? (????-??-??) [?]
+
** Changes in the format of error messages
This used to be the format of many error reports:
The reductions are now explicitly represented as transitions to other
diamond shaped nodes.
- * Noteworthy changes in release ?.? (????-??-??) [?]
+ * Noteworthy changes in release 2.6.5 (2012-11-07) [stable]
We consider compiler warnings about Bison generated parsers to be bugs.
Rather than working around them in your own project, please consider
* Noteworthy changes in release 2.6.1 (2012-07-30) [stable]
- Bison no longer executes user-specified M4 code when processing a grammar.
+ Bison no longer executes user-specified M4 code when processing a grammar.
** Future Changes
* Noteworthy changes in release 2.6 (2012-07-19) [stable]
-** Future Changes
+** Future changes
The next major release of Bison will drop support for the following
deprecated features. Please report disagreements to bug-bison@gnu.org.
LocalWords: namespaces strerror const autoconfiguration Dconst Autoconf's FDL
LocalWords: Automake TMPDIR LESSEQ ylwrap endif yydebug YYTOKEN YYLSP ival hh
LocalWords: extern YYTOKENTYPE TOKENTYPE yytokentype tokentype STYPE lval pdf
- LocalWords: lang yyoutput dvi html ps POSIX lvalp llocp calc yyo fval Wmaybe
- LocalWords: yyvsp pragmas noreturn java's
+ LocalWords: lang yyoutput dvi html ps POSIX lvalp llocp Wother nterm arg init
+ LocalWords: TOK calc yyo fval Wconflicts
Local Variables:
mode: outline
# releases, we want to be able run make dist without being required to
# add a bogus NEWS entry. In that case, the version string
# automatically contains a dash, which we also let disable gnits.
-AM_INIT_AUTOMAKE([1.11.1 dist-xz silent-rules]
+AM_INIT_AUTOMAKE([1.11.1 dist-xz nostdinc
+ color-tests parallel-tests
+ silent-rules]
m4_bmatch(m4_defn([AC_PACKAGE_VERSION]), [[-_]],
[gnu], [gnits]))
AM_SILENT_RULES([yes])
warn_c='-Wbad-function-cast -Wmissing-declarations -Wmissing-prototypes
-Wshadow -Wstrict-prototypes'
warn_cxx='-Wnoexcept'
+
AC_LANG_PUSH([C])
# Clang supports many of GCC's -W options, but only issues warnings
# on the ones it does not recognize. In that case, gl_WARN_ADD
BISON_TEST_FOR_WORKING_C_COMPILER
BISON_TEST_FOR_WORKING_CXX_COMPILER
+ BISON_C_COMPILER_POSIXLY_CORRECT
AC_ARG_ENABLE([yacc],
[AC_HELP_STRING([--disable-yacc],
, [enable_yacc=yes])
case $enable_yacc in
yes)
- YACC_SCRIPT=yacc
- YACC_LIBRARY=liby.a;;
+ YACC_SCRIPT=src/yacc
+ YACC_LIBRARY=lib/liby.a;;
*)
YACC_SCRIPT=
YACC_LIBRARY=;;
# Initialize the test suite.
AC_CONFIG_TESTDIR(tests)
-AC_CONFIG_FILES([tests/Makefile tests/atlocal])
+AC_CONFIG_FILES([tests/atlocal])
AC_CONFIG_FILES([tests/bison], [chmod +x tests/bison])
AC_CHECK_PROGS([VALGRIND], [valgrind])
case $VALGRIND:$host_os in
# Needed by tests/atlocal.in.
AC_SUBST([GCC])
-gt_JAVACOMP([1.3])
+gt_JAVACOMP([1.3], [1.4])
gt_JAVAEXEC
AC_CONFIG_FILES([Makefile
- build-aux/Makefile
- po/Makefile.in
- data/Makefile
- etc/Makefile
- examples/Makefile
- examples/calc++/Makefile
- lib/Makefile src/Makefile
- doc/Makefile
- doc/yacc.1])
+ po/Makefile.in
+ doc/yacc.1])
AC_OUTPUT
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[#include <limits.h>
- int test_array[CHAR_BIT];]])],
+ int test_array[CHAR_BIT];]])],
[],
[AC_MSG_FAILURE([cannot compile a simple C program])])
])
+
+ # BISON_CHECK_WITH_POSIXLY_CORRECT(CODE)
+ # --------------------------------------
+ # Run the Autoconf CODE with POSIXLY_CORRECT set to 1, and restored to
+ # its initial value afterwards.
+ AC_DEFUN([BISON_CHECK_WITH_POSIXLY_CORRECT],
+ [gl_awk_probe='BEGIN { if ("POSIXLY_CORRECT" in ENVIRON) print "x" }'
+ case ${POSIXLY_CORRECT+x}`$AWK "$gl_awk_probe" </dev/null` in
+ xx) gl_had_POSIXLY_CORRECT=exported ;;
+ x) gl_had_POSIXLY_CORRECT=yes ;;
+ *) gl_had_POSIXLY_CORRECT= ;;
+ esac
+ POSIXLY_CORRECT=1
+ export POSIXLY_CORRECT
+ $1
+ case $gl_had_POSIXLY_CORRECT in
+ exported) ;;
+ yes) AS_UNSET([POSIXLY_CORRECT]); POSIXLY_CORRECT=1 ;;
+ *) AS_UNSET([POSIXLY_CORRECT]) ;;
+ esac
+ ])
+
+ # BISON_C_COMPILER_POSIXLY_CORRECT
+ # --------------------------------
+ # Whether the compiler supports -g in POSIXLY_CORRECT mode. clang-2.9
+ # on OS X does not, because "clang-mp-2.9 -o test -g test.c" launches
+ # "/usr/bin/dsymutil test -o test.dSYM" which fails with "error:
+ # unable to open executable '-o'".
+ #
+ # Sets C_COMPILER_POSIXLY_CORRECT to true/false.
+ AC_DEFUN([BISON_C_COMPILER_POSIXLY_CORRECT],
+ [AC_CACHE_CHECK([whether $CC supports POSIXLY_CORRECT=1],
+ [bison_cv_cc_supports_posixly_correct],
+ [BISON_CHECK_WITH_POSIXLY_CORRECT(
+ [AC_LANG_PUSH([C])
+ AC_LINK_IFELSE([AC_LANG_PROGRAM],
+ [bison_cv_cc_supports_posixly_correct=yes],
+ [bison_cv_cc_supports_posixly_correct=no])
+ AC_LANG_POP([C])])])
+ case $bison_cv_cc_supports_posixly_correct in
+ yes) AC_SUBST([C_COMPILER_POSIXLY_CORRECT], [true]) ;;
+ no) AC_SUBST([C_COMPILER_POSIXLY_CORRECT], [false]);;
+ esac
+ ])
-# Executing Actions. -*- Autotest -*-
+e# Executing Actions. -*- Autotest -*-
# Copyright (C) 2001-2012 Free Software Foundation, Inc.
AT_BISON_OPTION_PUSHDEFS
AT_DATA_GRAMMAR([[input.y]],
-[[%error-verbose
+[[%define parse.error verbose
%debug
%{
]AT_YYERROR_DECLARE[
# AT_TEST(SKELETON-NAME, DIRECTIVES)
# ----------------------------------
- # Check the the initial location is correct.
+ # Check that the initial location is correct.
m4_pushdef([AT_TEST],
[AT_SETUP([Initial location: $1 $2])
AT_BISON_OPTION_PUSHDEFS
AT_DATA_GRAMMAR([[input.y]],
-[[%error-verbose
+[[%define parse.error verbose
%debug
%{
]AT_YYERROR_DECLARE[
AT_DATA_GRAMMAR([[input.y]],
[[
%{
-#include <stdio.h>
+# include <stdio.h>
]AT_YYERROR_DECLARE[
]AT_YYLEX_DECLARE[
typedef struct { int val; } stype;
V(input, $$, @$, ": /* Nothing */\n");
}
| line input /* Right recursive to load the stack so that popping at
- END can be exercised. */
+ END can be exercised. */
{
$$ = 2;
V(input, $$, @$, ": ");
$$ = -1;
V(line, $$, @$, ": ");
V('(', $1, @1, " ");
- fprintf (stderr, "error (@%d-%d) ", RANGE (@2));
+ fprintf (stderr, "error (@%d-%d) ", RANGE(@2));
V(')', $3, @3, "\n");
}
;
$3
_AT_CHECK_PRINTER_AND_DESTRUCTOR($[1], $[2], $[3], $[4],
-[%error-verbose
+[%define parse.error verbose
%debug
%verbose
%locations
AT_CHECK_PRINTER_AND_DESTRUCTOR([])
-AT_CHECK_PRINTER_AND_DESTRUCTOR([], [ with union])
+AT_CHECK_PRINTER_AND_DESTRUCTOR([], [with union])
AT_CHECK_PRINTER_AND_DESTRUCTOR([%defines %skeleton "lalr1.cc"])
-AT_CHECK_PRINTER_AND_DESTRUCTOR([%defines %skeleton "lalr1.cc"], [ with union])
+AT_CHECK_PRINTER_AND_DESTRUCTOR([%defines %skeleton "lalr1.cc"], [with union])
AT_CHECK_PRINTER_AND_DESTRUCTOR([%glr-parser])
-AT_CHECK_PRINTER_AND_DESTRUCTOR([%glr-parser], [ with union])
+AT_CHECK_PRINTER_AND_DESTRUCTOR([%glr-parser], [with union])
AT_SETUP([Default tagless %printer and %destructor])
AT_BISON_OPTION_PUSHDEFS([%locations])
AT_DATA_GRAMMAR([[input.y]],
-[[%error-verbose
+[[%define parse.error verbose
%debug
%locations
}
]])
-AT_BISON_CHECK([-o input.c input.y])
+AT_BISON_CHECK([-o input.c input.y], [], [],
+[[input.y:23.3-5: warning: useless %destructor for type <*> [-Wother]
+input.y:23.3-5: warning: useless %printer for type <*> [-Wother]
+]])
AT_COMPILE([input])
AT_PARSER_CHECK([./input], 1,
[[<> destructor for 'd' @ 4.
AT_SETUP([Default tagged and per-type %printer and %destructor])
AT_BISON_OPTION_PUSHDEFS
AT_DATA_GRAMMAR([[input.y]],
-[[%error-verbose
+[[%define parse.error verbose
%debug
%{
}
]])
-AT_BISON_CHECK([-o input.c input.y])
+AT_BISON_CHECK([-o input.c input.y], [], [],
+[[input.y:22.3-4: warning: useless %destructor for type <> [-Wother]
+input.y:22.3-4: warning: useless %printer for type <> [-Wother]
+]])
AT_COMPILE([input])
AT_PARSER_CHECK([./input], 1,
[[<*>/<field2>/e destructor.
AT_SETUP([Default %printer and %destructor for user-defined end token])
-# _AT_CHECK_DEFAULT_PRINTER_AND_DESTRUCTOR_FOR_END_TOKEN(TYPED)
-# -------------------------------------------------------------
-m4_define([_AT_CHECK_DEFAULT_PRINTER_AND_DESTRUCTOR_FOR_END_TOKEN],
+# AT_TEST(TYPED)
+# --------------
+m4_pushdef([AT_TEST],
[m4_if($1, 0,
[m4_pushdef([kind], []) m4_pushdef([not_kind], [*])],
[m4_pushdef([kind], [*]) m4_pushdef([not_kind], [])])
AT_BISON_OPTION_PUSHDEFS([%locations])
AT_DATA_GRAMMAR([[input]]$1[[.y]],
-[[%error-verbose
+[[%define parse.error verbose
%debug
%locations
]])
AT_BISON_OPTION_POPDEFS
-AT_BISON_CHECK([-o input$1.c input$1.y])
+AT_BISON_CHECK([-o input$1.c input$1.y], [], [],
+[m4_if([$1], [0],
+[[input0.y:23.3-5: warning: useless %destructor for type <*> [-Wother]
+input0.y:23.3-5: warning: useless %printer for type <*> [-Wother]
+]],
+[[input1.y:23.3-4: warning: useless %destructor for type <> [-Wother]
+input1.y:23.3-4: warning: useless %printer for type <> [-Wother]
+]])])
+
AT_COMPILE([input$1])
+
AT_PARSER_CHECK([./input$1], 0,
[[<]]kind[[> for 'E' @ 1.
<]]kind[[> for 'S' @ 1.
m4_popdef([not_kind])
])
-_AT_CHECK_DEFAULT_PRINTER_AND_DESTRUCTOR_FOR_END_TOKEN(0)
-_AT_CHECK_DEFAULT_PRINTER_AND_DESTRUCTOR_FOR_END_TOKEN(1)
+AT_TEST(0)
+AT_TEST(1)
+
+m4_popdef([AT_TEST])
AT_CLEANUP
]])
AT_BISON_OPTION_POPDEFS
-AT_BISON_CHECK([-o input.c input.y])
+AT_BISON_CHECK([-o input.c input.y], [], [],
+[[input.y:21.6-8: warning: useless %destructor for type <*> [-Wother]
+input.y:21.6-8: warning: useless %printer for type <*> [-Wother]
+]])
AT_COMPILE([input])
AT_PARSER_CHECK([./input], [1], [],
[[Starting parse
]])
AT_BISON_OPTION_POPDEFS
-AT_BISON_CHECK([-o input.c input.y])
+AT_BISON_CHECK([-o input.c input.y], [], [],
+[[input.y:22.3-4: warning: useless %destructor for type <> [-Wother]
+input.y:22.3-4: warning: useless %printer for type <> [-Wother]
+]])
AT_COMPILE([input])
AT_CLEANUP
AT_BISON_OPTION_POPDEFS
AT_BISON_CHECK([-o input.c input.y], 0,,
-[[input.y:33.3-23: warning: unset value: $$
-input.y:30.3-35.37: warning: unused value: $3
+[[input.y:24.70-72: warning: useless %destructor for type <*> [-Wother]
+input.y:24.70-72: warning: useless %printer for type <*> [-Wother]
+input.y:33.3-23: warning: unset value: $$ [-Wother]
+input.y:30.3-35.37: warning: unused value: $3 [-Wother]
]])
AT_COMPILE([input])
## Qualified $$ in actions. ##
## ------------------------- ##
-# Check that we can used qualified $$ (v.g., $<type>$) not only in
-# rule actions, but also where $$ is valid: %printer and %destructor.
+# Check that we can use qualified $$ (v.g., $<type>$) not only in rule
+# actions, but also where $$ is valid: %destructor/%printer and
+# %initial-action.
#
# FIXME: Not actually checking %destructor, but it's the same code as
# %printer...
m4_pushdef([AT_TEST],
[AT_SETUP([[Qualified $$ in actions: $1]])
-AT_BISON_OPTION_PUSHDEFS([%locations %skeleton "$1"])
+AT_BISON_OPTION_PUSHDEFS([%skeleton "$1"])
AT_DATA_GRAMMAR([[input.y]],
[[%skeleton "$1"
-%defines // FIXME: Mandated by lalr1.cc in Bison 2.6.
-%locations // FIXME: Mandated by lalr1.cc in Bison 2.6.
%debug
%code requires
{
AT_PARSER_CHECK([./input], 0, [], [stderr])
# Don't be too picky on the traces, GLR is not exactly the same. Keep
# only the lines from the printer.
-#
-# Don't care about locations. FIXME: remove their removal when Bison
-# supports C++ without locations.
-AT_CHECK([[sed -ne 's/([-0-9.]*: /(/;/ival:/p' stderr]], 0,
+AT_CHECK([[sed -ne '/ival:/p' stderr]], 0,
[[Reading a token: Next token is token UNTYPED (ival: 10, fval: 0.1)
Shifting token UNTYPED (ival: 10, fval: 0.1)
Reading a token: Next token is token INT (ival: 20, fval: 0.2)
start: test2 test1 test0 testc;
test2
-: 'a' { semi; /* TEST:N:2 */ }
-| 'b' { if (0) {no_semi} /* TEST:N:2 */ }
-| 'c' { if (0) {semi;} /* TEST:N:2 */ }
-| 'd' { semi; no_semi /* TEST:Y:2 */ }
-| 'e' { semi(); no_semi() /* TEST:Y:2 */ }
-| 'f' { semi[]; no_semi[] /* TEST:Y:2 */ }
-| 'g' { semi++; no_semi++ /* TEST:Y:2 */ }
-| 'h' { {no_semi} no_semi /* TEST:Y:2 */ }
-| 'i' { {semi;} no_semi /* TEST:Y:2 */ }
+: 'a' { semi; /* TEST:N:2 */ }
+| 'b' { if (0) {no_semi} /* TEST:N:2 */ }
+| 'c' { if (0) {semi;} /* TEST:N:2 */ }
+| 'd' { semi; no_semi /* TEST:Y:2 */ }
+| 'e' { semi(); no_semi() /* TEST:Y:2 */ }
+| 'f' { semi[]; no_semi[] /* TEST:Y:2 */ }
+| 'g' { semi++; no_semi++ /* TEST:Y:2 */ }
+| 'h' { {no_semi} no_semi /* TEST:Y:2 */ }
+| 'i' { {semi;} no_semi /* TEST:Y:2 */ }
;
test1
- : 'a' { semi; // TEST:N:1 ;
-} | 'b' { if (0) {no_semi} // TEST:N:1 ;
-} | 'c' { if (0) {semi;} // TEST:N:1 ;
-} | 'd' { semi; no_semi // TEST:Y:1 ;
-} | 'e' { semi(); no_semi() // TEST:Y:1 ;
-} | 'f' { semi[]; no_semi[] // TEST:Y:1 ;
-} | 'g' { semi++; no_semi++ // TEST:Y:1 ;
-} | 'h' { {no_semi} no_semi // TEST:Y:1 ;
-} | 'i' { {semi;} no_semi // TEST:Y:1 ;
+ : 'a' { semi; // TEST:N:1 ;
+} | 'b' { if (0) {no_semi} // TEST:N:1 ;
+} | 'c' { if (0) {semi;} // TEST:N:1 ;
+} | 'd' { semi; no_semi // TEST:Y:1 ;
+} | 'e' { semi(); no_semi() // TEST:Y:1 ;
+} | 'f' { semi[]; no_semi[] // TEST:Y:1 ;
+} | 'g' { semi++; no_semi++ // TEST:Y:1 ;
+} | 'h' { {no_semi} no_semi // TEST:Y:1 ;
+} | 'i' { {semi;} no_semi // TEST:Y:1 ;
} ;
test0
- : 'a' { semi; // TEST:N:1 {}
-} | 'b' { if (0) {no_semi} // TEST:N:1 {}
-} | 'c' { if (0) {semi;} // TEST:N:1 {}
-} | 'd' { semi; no_semi // TEST:Y:1 {}
-} | 'e' { semi(); no_semi() // TEST:Y:1 {}
-} | 'f' { semi[]; no_semi[] // TEST:Y:1 {}
-} | 'g' { semi++; no_semi++ // TEST:Y:1 {}
-} | 'h' { {no_semi} no_semi // TEST:Y:1 {}
-} | 'i' { {semi;} no_semi // TEST:Y:1 {}
+ : 'a' { semi; // TEST:N:1 {}
+} | 'b' { if (0) {no_semi} // TEST:N:1 {}
+} | 'c' { if (0) {semi;} // TEST:N:1 {}
+} | 'd' { semi; no_semi // TEST:Y:1 {}
+} | 'e' { semi(); no_semi() // TEST:Y:1 {}
+} | 'f' { semi[]; no_semi[] // TEST:Y:1 {}
+} | 'g' { semi++; no_semi++ // TEST:Y:1 {}
+} | 'h' { {no_semi} no_semi // TEST:Y:1 {}
+} | 'i' { {semi;} no_semi // TEST:Y:1 {}
} ;
testc
AT_BISON_OPTION_POPDEFS
AT_BISON_CHECK([[-o input.c input.y]], [0], [],
-[[input.y:8.48: warning: a ';' might be needed at the end of action code
-input.y:8.48: warning: future versions of Bison will not add the ';'
-input.y:9.48: warning: a ';' might be needed at the end of action code
-input.y:9.48: warning: future versions of Bison will not add the ';'
-input.y:10.48: warning: a ';' might be needed at the end of action code
-input.y:10.48: warning: future versions of Bison will not add the ';'
-input.y:11.48: warning: a ';' might be needed at the end of action code
-input.y:11.48: warning: future versions of Bison will not add the ';'
-input.y:12.48: warning: a ';' might be needed at the end of action code
-input.y:12.48: warning: future versions of Bison will not add the ';'
-input.y:13.48: warning: a ';' might be needed at the end of action code
-input.y:13.48: warning: future versions of Bison will not add the ';'
-input.y:20.1: warning: a ';' might be needed at the end of action code
-input.y:20.1: warning: future versions of Bison will not add the ';'
-input.y:21.1: warning: a ';' might be needed at the end of action code
-input.y:21.1: warning: future versions of Bison will not add the ';'
-input.y:22.1: warning: a ';' might be needed at the end of action code
-input.y:22.1: warning: future versions of Bison will not add the ';'
-input.y:23.1: warning: a ';' might be needed at the end of action code
-input.y:23.1: warning: future versions of Bison will not add the ';'
-input.y:24.1: warning: a ';' might be needed at the end of action code
-input.y:24.1: warning: future versions of Bison will not add the ';'
-input.y:25.1: warning: a ';' might be needed at the end of action code
-input.y:25.1: warning: future versions of Bison will not add the ';'
-input.y:31.1: warning: a ';' might be needed at the end of action code
-input.y:31.1: warning: future versions of Bison will not add the ';'
-input.y:32.1: warning: a ';' might be needed at the end of action code
-input.y:32.1: warning: future versions of Bison will not add the ';'
-input.y:33.1: warning: a ';' might be needed at the end of action code
-input.y:33.1: warning: future versions of Bison will not add the ';'
-input.y:34.1: warning: a ';' might be needed at the end of action code
-input.y:34.1: warning: future versions of Bison will not add the ';'
-input.y:35.1: warning: a ';' might be needed at the end of action code
-input.y:35.1: warning: future versions of Bison will not add the ';'
-input.y:36.1: warning: a ';' might be needed at the end of action code
-input.y:36.1: warning: future versions of Bison will not add the ';'
+[[input.y:8.48: warning: a ';' might be needed at the end of action code [-Wdeprecated]
+input.y:8.48: warning: future versions of Bison will not add the ';' [-Wdeprecated]
+input.y:9.48: warning: a ';' might be needed at the end of action code [-Wdeprecated]
+input.y:9.48: warning: future versions of Bison will not add the ';' [-Wdeprecated]
+input.y:10.48: warning: a ';' might be needed at the end of action code [-Wdeprecated]
+input.y:10.48: warning: future versions of Bison will not add the ';' [-Wdeprecated]
+input.y:11.48: warning: a ';' might be needed at the end of action code [-Wdeprecated]
+input.y:11.48: warning: future versions of Bison will not add the ';' [-Wdeprecated]
+input.y:12.48: warning: a ';' might be needed at the end of action code [-Wdeprecated]
+input.y:12.48: warning: future versions of Bison will not add the ';' [-Wdeprecated]
+input.y:13.48: warning: a ';' might be needed at the end of action code [-Wdeprecated]
+input.y:13.48: warning: future versions of Bison will not add the ';' [-Wdeprecated]
+input.y:20.1: warning: a ';' might be needed at the end of action code [-Wdeprecated]
+input.y:20.1: warning: future versions of Bison will not add the ';' [-Wdeprecated]
+input.y:21.1: warning: a ';' might be needed at the end of action code [-Wdeprecated]
+input.y:21.1: warning: future versions of Bison will not add the ';' [-Wdeprecated]
+input.y:22.1: warning: a ';' might be needed at the end of action code [-Wdeprecated]
+input.y:22.1: warning: future versions of Bison will not add the ';' [-Wdeprecated]
+input.y:23.1: warning: a ';' might be needed at the end of action code [-Wdeprecated]
+input.y:23.1: warning: future versions of Bison will not add the ';' [-Wdeprecated]
+input.y:24.1: warning: a ';' might be needed at the end of action code [-Wdeprecated]
+input.y:24.1: warning: future versions of Bison will not add the ';' [-Wdeprecated]
+input.y:25.1: warning: a ';' might be needed at the end of action code [-Wdeprecated]
+input.y:25.1: warning: future versions of Bison will not add the ';' [-Wdeprecated]
+input.y:31.1: warning: a ';' might be needed at the end of action code [-Wdeprecated]
+input.y:31.1: warning: future versions of Bison will not add the ';' [-Wdeprecated]
+input.y:32.1: warning: a ';' might be needed at the end of action code [-Wdeprecated]
+input.y:32.1: warning: future versions of Bison will not add the ';' [-Wdeprecated]
+input.y:33.1: warning: a ';' might be needed at the end of action code [-Wdeprecated]
+input.y:33.1: warning: future versions of Bison will not add the ';' [-Wdeprecated]
+input.y:34.1: warning: a ';' might be needed at the end of action code [-Wdeprecated]
+input.y:34.1: warning: future versions of Bison will not add the ';' [-Wdeprecated]
+input.y:35.1: warning: a ';' might be needed at the end of action code [-Wdeprecated]
+input.y:35.1: warning: future versions of Bison will not add the ';' [-Wdeprecated]
+input.y:36.1: warning: a ';' might be needed at the end of action code [-Wdeprecated]
+input.y:36.1: warning: future versions of Bison will not add the ';' [-Wdeprecated]
]])
AT_MATCHES_CHECK([input.c], [[/\* TEST:N:2 \*/ \}$]], [[3]])
-# @configure_input@ -*- shell-script -*-
+# @configure_input@ -*- shell-script -*-
# Configurable variable values for Bison test suite.
# Copyright (C) 2000-2012 Free Software Foundation, Inc.
# Empty if no Java VM was found
CONF_JAVA='@CONF_JAVA@'
-# We need egrep.
+# We need egrep and perl.
: ${EGREP='@EGREP@'}
+: ${PERL='@PERL@'}
# Use simple quotes (lib/quote.c).
LC_CTYPE=C
# Empty if no xsltproc was found
: ${XSLTPROC='@XSLTPROC@'}
-: ${PERL='@PERL@'}
-
+ # Don't just check if $POSIXLY_CORRECT is set, as Bash, when launched
+ # as /bin/sh, sets the shell variable POSIXLY_CORRECT to y, but not
+ # the environment variable.
+ : ${C_COMPILER_POSIXLY_CORRECT='@C_COMPILER_POSIXLY_CORRECT@'}
+ if env | grep '^POSIXLY_CORRECT=' >/dev/null; then
+ POSIXLY_CORRECT_IS_EXPORTED=true
+ else
+ POSIXLY_CORRECT_IS_EXPORTED=false
+ fi
+
+# Handle --compile-c-with-cxx here, once CXX and CXXFLAGS are known.
+if "$at_arg_compile_c_with_cxx"; then
+ CC=$CXX
+ CFLAGS=$CXXFLAGS
+fi
# --------------------------------------------------
# This macro works around the impossibility to define macros
# inside macros, because issuing `[$1]' is not possible in M4 :(.
-# This sucks hard, GNU M4 should really provide M5 like $$1.
+# This sucks hard, GNU M4 should really provide M5-like $$1.
m4_define([_AT_BISON_OPTION_PUSHDEFS],
[m4_if([$1$2], $[1]$[2], [],
[m4_fatal([$0: Invalid arguments: $@])])dnl
m4_pushdef([AT_PARAM_IF],
[m4_bmatch([$3], [%parse-param], [$1], [$2])])
# Comma-terminated list of formals parse-parameters.
-# E.g., %parse-param { int x } {int y} -> "int x, int y, ".
+# E.g., %parse-param { int x } %parse-param {int y} -> "int x, int y, ".
+# FIXME: Support grouped parse-param.
m4_pushdef([AT_PARSE_PARAMS])
m4_bpatsubst([$3], [%parse-param { *\([^{}]*[^{} ]\) *}],
[m4_append([AT_PARSE_PARAMS], [\1, ])])
[m4_bmatch([$3], [\(%define api\.prefix\|%name-prefix\) ".*"],
[m4_bregexp([$3], [\(%define api\.prefix\|%name-prefix\) "\([^""]*\)"], [\2])],
[yy])])
+m4_pushdef([AT_TOKEN_CTOR_IF],
+[m4_bmatch([$3], [%define api.token.constructor], [$1], [$2])])
+m4_pushdef([AT_TOKEN_PREFIX],
+[m4_bmatch([$3], [%define api.token.prefix ".*"],
+ [m4_bregexp([$3], [%define api.token.prefix "\(.*\)"], [\1])])])
m4_pushdef([AT_API_prefix],
[m4_bmatch([$3], [%define api\.prefix ".*"],
[m4_bregexp([$3], [%define api\.prefix "\([^""]*\)"], [\1])],
# yyerror receives the location if %location & %pure & (%glr or %parse-param).
m4_pushdef([AT_YYERROR_ARG_LOC_IF],
[AT_GLR_OR_PARAM_IF([AT_PURE_AND_LOC_IF([$1], [$2])],
- [$2])])
+ [$2])])
# yyerror always sees the locations (when activated), except if
# (yacc & pure & !param). FIXME: This is wrong. See the manual.
m4_pushdef([AT_YYERROR_SEES_LOC_IF],
[AT_LOCATION_IF([AT_YACC_IF([AT_PURE_IF([AT_PARAM_IF([$1], [$2])],
- [$1])],
- [$1])],
- [$2])])
+ [$1])],
+ [$1])],
+ [$2])])
# The interface is pure: either because %define api.pure, or because we
# are using the C++ parsers.
m4_pushdef([AT_PURE_LEX_IF],
[AT_PURE_IF([$1],
- [AT_SKEL_CC_IF([$1], [$2])])])
+ [AT_SKEL_CC_IF([$1], [$2])])])
m4_pushdef([AT_YYSTYPE],
[AT_SKEL_CC_IF([AT_NAME_PREFIX[::parser::semantic_type]],
[m4_pushdef([AT_LOC], [(*llocp)])
m4_pushdef([AT_VAL], [(*lvalp)])
m4_pushdef([AT_YYLEX_FORMALS],
- [AT_YYSTYPE *lvalp[]AT_LOCATION_IF([, AT_YYLTYPE *llocp])])
+ [AT_YYSTYPE *lvalp[]AT_LOCATION_IF([, AT_YYLTYPE *llocp])])
m4_pushdef([AT_YYLEX_ARGS],
- [lvalp[]AT_LOCATION_IF([, llocp])])
+ [lvalp[]AT_LOCATION_IF([, llocp])])
m4_pushdef([AT_USE_LEX_ARGS],
- [(void) lvalp;AT_LOCATION_IF([(void) llocp])])
+ [(void) lvalp;AT_LOCATION_IF([(void) llocp])])
m4_pushdef([AT_YYLEX_PRE_FORMALS],
- [AT_YYLEX_FORMALS, ])
+ [AT_YYLEX_FORMALS, ])
m4_pushdef([AT_YYLEX_PRE_ARGS],
- [AT_YYLEX_ARGS, ])
+ [AT_YYLEX_ARGS, ])
],
[m4_pushdef([AT_LOC], [[(]AT_NAME_PREFIX[lloc)]])
m4_pushdef([AT_VAL], [[(]AT_NAME_PREFIX[lval)]])
[AT_LOC_PUSHDEF([begin.line], [begin.column], [end.line], [end.column])])],
[AT_LOC_PUSHDEF([first_line], [first_column], [last_line], [last_column])])
+
+AT_GLR_IF([AT_KEYWORDS([glr])])
])# _AT_BISON_OPTION_PUSHDEFS
m4_popdef([AT_YYERROR_ARG_LOC_IF])
m4_popdef([AT_API_PREFIX])
m4_popdef([AT_API_prefix])
+m4_popdef([AT_TOKEN_PREFIX])
+m4_popdef([AT_TOKEN_CTOR_IF])
m4_popdef([AT_NAME_PREFIX])
m4_popdef([AT_GLR_OR_PARAM_IF])
m4_popdef([AT_PURE_AND_LOC_IF])
}]],
[c++], [[/* A C++ error reporting function. */
void
-]AT_NAME_PREFIX[::parser::error (const location_type& l, const std::string& m)
-{
- (void) l;
- std::cerr << ]AT_LOCATION_IF([l << ": " << ])[m << std::endl;
+]AT_NAME_PREFIX[::parser::error (]AT_LOCATION_IF([[const location_type& l, ]])[const std::string& m)
+{ std::cerr << ]AT_LOCATION_IF([l << ": " << ])[m << std::endl;
}]],
[java], [AT_LOCATION_IF([[public void yyerror (Calc.Location l, String s)
- {
+{
if (l == null)
System.err.println (s);
else
[m4_null_if([$2], [AT_BISON_CHECK_XML($@)])
AT_BISON_CHECK_NO_XML($@)])
-m4_define([AT_BISON_WERROR_MSG],
- [[bison: warnings being treated as errors]])
-
-
# AT_BISON_CHECK_(BISON_ARGS, [OTHER_AT_CHECK_ARGS])
# --------------------------------------------------
# Low-level macro to run bison once.
[[# Defining POSIXLY_CORRECT causes bison to complain if options are
# added after the grammar file name, so skip these checks in that
# case.
- #
- # Don't just check if $POSIXLY_CORRECT is set, as Bash, when launched
- # as /bin/sh, sets the shell variable POSIXLY_CORRECT to y, but not
- # the environment variable.
- if env | grep '^POSIXLY_CORRECT=' >/dev/null; then :; else
+ if test "$POSIXLY_CORRECT_IS_EXPORTED" = false; then
- ]AT_SAVE_SPECIAL_FILES[
+ ]AT_SAVE_SPECIAL_FILES[
# To avoid expanding it repeatedly, store specified stdout.
]AT_DATA([expout], [$3])[
# Build expected stderr up to and including the "warnings being
# treated as errors" message.
- ]AT_DATA([[at-bison-check-warnings]], [$4])[
- at_bison_check_first=`sed -n \
- '/: warning: /{=;q;}' at-bison-check-warnings`
- : ${at_bison_check_first:=1}
- at_bison_check_first_tmp=`sed -n \
- '/conflicts: [0-9].*reduce$/{=;q;}' at-bison-check-warnings`
- : ${at_bison_check_first_tmp:=1}
- if test $at_bison_check_first_tmp -lt $at_bison_check_first; then
- at_bison_check_first=$at_bison_check_first_tmp
- fi
- if test $at_bison_check_first -gt 1; then
- sed -n "1,`expr $at_bison_check_first - 1`"p \
- at-bison-check-warnings > experr
- fi
- echo ']AT_BISON_WERROR_MSG[' >> experr
-
- # Finish building expected stderr and check. Unlike warnings,
- # complaints cause bison to exit early. Thus, with -Werror, bison
- # does not necessarily report all warnings that it does without
- # -Werror, but it at least reports one.
- at_bison_check_last=`sed -n '$=' stderr`
- : ${at_bison_check_last:=1}
- at_bison_check_last=`expr $at_bison_check_last - 1`
- sed -n "$at_bison_check_first,$at_bison_check_last"p \
- at-bison-check-warnings >> experr
- ]AT_CHECK([[sed 's,.*/\(]AT_BISON_WERROR_MSG[\)$,\1,' \
- stderr 1>&2]], [[0]], [[]], [experr])[
+ ]AT_DATA([[experr]], [$4])[
+ $PERL -pi -e 's{(.*): warning: (.*)\[-W(.*)\]$}
+ {$][1: error: $][2\@<:@-Werror=$][3@:>@}' experr
+ ]AT_CHECK([[sed 's,.*/$,,' stderr 1>&2]], [[0]], [[]], [experr])[
# Now check --warnings=error.
cp stderr experr
# Don't combine these Bison invocations since we want to be sure that
# --report=all isn't required to get the full XML file.
AT_BISON_CHECK_([[--report=all --report-file=xml-tests/test.output \
- --graph=xml-tests/test.dot ]]AT_BISON_ARGS,
- [[0]], [ignore], [ignore])
+ --graph=xml-tests/test.dot ]]AT_BISON_ARGS,
+ [[0]], [ignore], [ignore])
AT_BISON_CHECK_([[--xml=xml-tests/test.xml ]]AT_BISON_ARGS,
- [[0]], [ignore], [ignore])
+ [[0]], [ignore], [ignore])
m4_popdef([AT_BISON_ARGS])dnl
[cp xml-tests/test.output expout]
AT_CHECK([[$XSLTPROC \
# otherwise pass "-c"; this is a hack. The default SOURCES is OUTPUT
# with trailing .o removed, and ".c" appended.
m4_define([AT_COMPILE],
- [AT_CHECK(m4_join([ ],
+ [AT_CHECK([case $POSIXLY_CORRECT_IS_EXPORTED:$C_COMPILER_POSIXLY_CORRECT in
+ true:false) echo 'cannot compile properly with POSIXLY_CORRECT' && exit 77;;
+ esac])
+ AT_CHECK(m4_join([ ],
[$CC $CFLAGS $CPPFLAGS],
[m4_bmatch([$1], [[.]], [-c], [$LDFLAGS])],
[-o $1],
[m4_default([$2], [m4_bpatsubst([$1], [\.o$]).c])],
[m4_bmatch([$1], [[.]], [], [$LIBS])]),
- 0, [ignore], [ignore])])
+ 0, [ignore], [ignore])])
# AT_COMPILE_CXX(OUTPUT, [SOURCES = OUTPUT.cc])
# ---------------------------------------------
[-o $1],
[m4_default([$2], [m4_bpatsubst([$1], [\.o$]).cc])],
[m4_bmatch([$1], [[.]], [], [$LIBS])]),
- 0, [ignore], [ignore])])
+ 0, [ignore], [ignore])])
# AT_JAVA_COMPILE(SOURCES)
# ------------------------
[java],
[AT_BISON_CHECK([-o $1.java $1.y])
AT_LANG_COMPILE([$1],
- m4_join([ ],
- [$1.java],
- m4_ifval($2, [[$1-$2.java]]),
+ m4_join([ ],
+ [$1.java],
+ m4_ifval($2, [[$1-$2.java]]),
m4_ifval($3, [[$1-$3.java]])))],
[c++],
[AT_BISON_CHECK([-o $1.cc $1.y])
AT_LANG_COMPILE([$1],
- m4_join([ ],
- [$1.cc],
- m4_ifval($2, [[$1-$2.cc]]),
+ m4_join([ ],
+ [$1.cc],
+ m4_ifval($2, [[$1-$2.cc]]),
m4_ifval($3, [[$1-$3.cc]])))],
[c],
[AT_BISON_CHECK([-o $1.c $1.y])
AT_LANG_COMPILE([$1],
- m4_join([ ],
- [$1.c],
- m4_ifval($2, [[$1-$2.c]]),
+ m4_join([ ],
+ [$1.c],
+ m4_ifval($2, [[$1-$2.c]]),
m4_ifval($3, [[$1-$3.c]])))])
])
projects / bison.git / commitdiff
