Reported by Rob Conde.
http://lists.gnu.org/archive/html/bug-bison/2013-03/msg00003.html
* data/stack.hh (operator=, stack(const stack&)): Make this class
uncopyable, i.e., "undefine" these operators: make them private and
don't implement them.
(clear): New.
* data/lalr1.cc: Use it instead of an assignment.
(parser): Make this class uncopyable.
* data/glr.c, src/graphviz.h, src/ielr.c, src/scan-gram.l,
* src/system.h, tests/actions.at, tests/glr-regression.at: Do not
use // comments.
Do not introduce variables after statements.
Provide "main" with a return value.
* doc/bison.texi (Actions in Mid-Rule): Mention and use named references.
Split into three subsections, among which...
(Mid-Rule Action Translation): this new section.
* NEWS: Add entry.
* doc/bison.texi (%define Summary): Show the old Yacc behaviour.
(Parser Function): Move parse-param examples here.
(Pure Calling): Remove parse-param examples.
(Error Reporting): Don't show the old behavior, stick to 'full'.
* origin/branch-2.6:
yacc.c: always initialize yylloc
doc: one of the fixes for an ambiguous grammar was ambiguous too
doc: fix the dangling else with precedence directives
doc: prefer "token" to TOKEN
doc: formatting changes
Conflicts:
NEWS
doc/bison.texi
The initial location might be used if the parser starts by an empty
reduction, so really ensure proper initialization of the initial
location. The previous approach fails for PostgreSQL, which uses
Reported by Peter Eisentraut.
http://lists.gnu.org/archive/html/bug-bison/2012-11/msg00023.html
With help from Théophile Ranquet.
* data/yacc.c (b4_declare_scanner_communication_variables): Be sure
to initialize yylloc, even when its structure is unknown.
(yyparse): Simplify the call to b4_dollar_pushdef.
* tests/actions.at (Initial location): Check of similar pattern
as in the case of PostgreSQL.
The XML output combined with the XSL Transformations provided in data/ are
incredibly useful, they should be documented.
* doc/bison.texi (Xml): New node.
* origin/branch-2.6:
maint: post-release administrivia
version 2.6.5
regen
tests: syntax-check
tests: beware of compilers that do not support POSIXLY_CORRECT
gnulib: update
Conflicts:
NEWS
src/parse-gram.c
src/parse-gram.h
There are several issues to address here. One is that yylloc should
be initialized when possible. Another is that the push parser needs
to update yypushed_loc when the user modified it. And if the parser
starts by a reduction of an empty, it uses the first location on the
stack, which, therefore, must also be initialized to this initial
location.
This is getting complex, especially since because initializing a
global (impure interface) is different from initializing a local
variable. To simplify, the local yylloc is not initialized during its
definition.
* data/c.m4 (b4_yyloc_default_define): Replace by...
(b4_yyloc_default): this.
Adjust dependencies.
* data/glr.cc: Initialize yylloc.
* data/yacc.c (b4_declare_scanner_communication_variables):
Initialize yylloc during its definition.
Don't define yyloc_default.
(yypush_parse): The location formal is not const, as we might
initialize it.
(yyparse): Define yyloc_default.
Use it before running the user initial action.
Possibly update the first location on the stack, and the pushed
location after the user initial action.
* tests/actions.at (Initial locations): Check that the initial
location is correct.
When generating a pure push parser, the initialization of yylval and
yylloc may not be visible to the compiler. With warnings enabled, GCC
4.3.6, 4.4.7, 4.5.4, and 4.6.3 report uninitialized uses of
yylval/yylloc. Using local pragmas to disable these warnings is not
supported before 4.6, and 4.6 does not support it properly. So
initialize yylval and yylloc at their definition. Reported by Peter
Simons. See
http://lists.gnu.org/archive/html/bison-patches/2012-10/msg00133.html
* data/c.m4 (b4_yyloc_default_define): New.
* data/yacc.c: Use it when locations are requested.
(YYLVAL_INITIALIZE): Replace by...
(YY_INITIAL_VALUE): this.
(yyparse): Initialize yylloc and yylval.
Therefore, remove the initialization of yylloc's field.
* data/glr.c: Likewise.
* 2.6.3: (22 commits)
maint: post-release administrivia
version 2.6.3
gnulib: update
tests: check %no-lines
NEWS: warnings with clang
warnings: avoid warnings from clang
tests: no longer disable -O compiler options
yacc.c: initialize yylval in pure-parser mode
skeletons: style changes
tests: minor improvements
tests: use $PERL instead of perl
build: look for Perl in configure.
tests: fix sed portability issues
tests: diff -u is not portable
maint: word changes
lalr1.cc: fix test suite portability
maint: fix an erroneous include
tests: check that headers are self contained
doc: add missing documentation for --report
headers: move CPP guards into YY_*_INCLUDED to avoid collisions
...
Conflicts:
NEWS
doc/bison.texi
tests/headers.at
Tests are running without -O since
f377f69fec because some warnings (about
yylval not being initialized) show only when GCC is given -O2. The
previous patch fixes the warnings. Run the test suite with compiler
options unmodified.
* tests/atlocal.in (O0CFLAGS, O0CXXFLAGS): Remove, use CFLAGS and
CXXFLAGS.
This fixes test 130 (Several parsers).
* data/location.cc: Include <iostream> rather than <iosfwd> since
we really need << on strings for instance.
* NEWS: Document this.
Signed-off-by: Akim Demaille <akim@lrde.epita.fr>
Note that 'make web-manual' fails.
* NEWS: Document these changes.
* doc/Makefile.am: Adjust to generate example files.
* doc/bison.texi: Add a Graphviz section after "Understanding::", the section
describing the .output file, because these are similar.
* doc/figs/example-reduce.dot, doc/figs/example-reduce.txt,
doc/figs/example-shift.dot, doc/figs/example-shift.txt: New, minimal
examples to illustrate the documentation.
Signed-off-by: Akim Demaille <akim@lrde.epita.fr>
This feature was introduced in 95a2de5695
(which is part of 2.5), but not documented. Give it a proper name, and
make it public.
* data/c++.m4, data/lalr1.cc, data/glr.cc, data/java.m4: Use
api.location.type instead of location_type.
* src/muscle-tab.c (muscle_percent_variable_update): Map the latter to
the former.
* tests/local.at: Adjust.
* tests/calc.at: Use api.location.type.
Leave tests/java.at with location_type, at least for the time being,
to cover both names.
* doc/bison.texi: Document api.location.type.
(User Defined Location Type): New.
* NEWS: Update.
Tests are running without -O since
f377f69fec because some warnings (about
yylval not being initialized) show only when GCC is given -O2. The
previous patch fixes the warnings. Run the test suite with compiler
options unmodified.
* tests/atlocal.in (O0CFLAGS, O0CXXFLAGS): Remove, use CFLAGS and
CXXFLAGS.
This fixes test 130 (Several parsers).
* data/location.cc: Include <iostream> rather than <iosfwd> since
we really need << on strings for instance.
* NEWS: Document this.
Signed-off-by: Akim Demaille <akim@lrde.epita.fr>
This is the continuation of the work on the readability of errors
context.
For example, what used to be:
input.y:5.10-24: %printer redeclaration for <field2>
input.y:3.11-25: previous declaration
is now:
input.y:5.10-24: %printer redeclaration for <field2>
input.y:3.11-25: previous declaration
* NEWS: Document this change.
* src/symtab.c (symbol_redeclaration, semantic_type_redeclaration,
user_token_number_redeclaration, default_tagged_destructor_set,
default_tagless_destructor_set, default_tagged_printer_set,
default_tagless_printer_set): Use complain_at_indent to
output with increased indentation level.
* tests/input.at: Apply this change.
Signed-off-by: Akim Demaille <akim@lrde.epita.fr>
When no header was to be generated, Bison would issue:
/* In a future release of Bison, this section will be replaced
by #include "". */
#ifndef YY_
# define YY_
It now properly generates nothing.
* data/c.m4 (b4_cpp_guard_open, b4_cpp_guard_close): Issue nothing when
the file name is empty.
* data/yacc.c: Do not generate the above comment when there is no header
to generate.
* NEWS: Update.
