* src/state-item.h, src/state-item.c (state_item): Make the state
const.
(state_item_set): Make it clearer that it works in the state_items
global array.
* src/counterexample.c: Use 'res' as a variable name for returned
value, as elsewhere.
Avoid uninitialized variables, especially pointers.
Avoid assignment where possible.
The CI has "failures" such as (253, "Null nonterminals"):
@@ -21,7 +21,7 @@
3: 3 b: . %empty
3: 4 c: . %empty
On Symbols: {A,}
-time limit exceeded: 6.000000
+time limit exceeded: 11.000000
First Example c • c A A $end
First derivation $accept ::=[ a ::=[ c d ::=[ a ::=[ b ::=[ • ] d ::=[ c A A ] ] ] ] $end ]
Second Example c • A $end
* tests/counterexample.at (AT_BISON_CHECK_CEX): New.
Use it to neutralize differences in timeout values.
* src/parse-simulation.c: Replace reference counting with
parse_state_retain everywhere.
(free_parse_state): Make this function iterative instead of
recursive. Long parse_state chains were causing stack exhaustion.
* tests/counterexample.at: Fix expectations.
Fixes the SEGV in test 247 (counterexample.at:195): "S/R after first
token".
* src/counterexample.c: here.
* tests/counterexample.at: Fix expectations.
* src/counterexample.c, src/derivation.c:
Do not output diagnostics on stdout, that's the job of stderr, and the
testsuite heavily depend on this.
Do not leave trailing spaces in the output.
* tests/counterexample.at: Use AT_KEYWORDS.
Specify the expected outputs.
* tests/local.mk: Add counterexample.at.
* src/complain.h, src/complain.c: Add support for -Wcounterexample.
* src/conflicts.c (report_counterexamples): New.
(rule_conflicts_print): Use it when -Wcounterexample is given.
* src/getargs.h, src/getargs.c: Add support for --trace=cex.
* src/main.c (main): Init and deinit counterexample generation.
Commit a4ede8f85b ("package: make bison
a relocatable package") made Bison relocatable, but in fact it still
contains one absolute reference: the M4 variable, which points to the
M4 program. Let's fix that by using relocate(), see if an M4 binary is
available at the relocated location, and otherwise fallback to the
original M4 location.
See https://lists.gnu.org/r/bison-patches/2020-05/msg00078.html,
and https://lists.gnu.org/r/bison-patches/2020-05/msg00087.html.
* src/files.h, src/files.c (m4path): New.
* src/output.c: Use it.
* build-aux/update-test: When given a directory, use the testsuite.log
which it contains.
Do not accept empty "from"s, as substituting the empty string with
something is rarely a good idea.
With input such as
%token<fl> yVL_CLOCK "/*verilator sc_clock*/"
we generate
yVL_CLOCK = 610, /* "/*verilator sc_clock*/" */
which is invalid since the comment will actually be closed on the
first "*/". Let's turn "*/" into "*\/" to avoid this. But GCC will
also warn about "/*" inside a comment, so let's "escape" it too.
Reported by Huang Rui.
https://github.com/akimd/bison/issues/38
* data/skeletons/c-like.m4 (_b4_comment): Escape comment delimiters in
comments.
* tests/input.at (Torturing the Scanner): Check thes cases.
* tests/m4.at: New.
c.m4 contains a definition of _Noreturn which is modeled after
gnulib's lib/_Noreturn.h. The latter was recently
changed (b61bf2f0e8) to not using
[[noreturn]] at all, because the uses of _Noreturn in gnulib are
sometimes incompatible with the rules of [[noreturn]].
As a result glr.cc started to use _Noreturn in C++, which clang
refuses (all the glr.cc tests currently fail with Clang++).
* data/skeletons/c.m4 (b4_attribute_define): Restore the definition of
_Noreturn as [[noreturn]] in modern C++.
The generated code uses _Noreturn in places where [[noreturn]] is
valid.
* etc/bench.pl.in, examples/c/bistromathic/parse.y,
* examples/c/calc/calc.y, examples/c/pushcalc/calc.y: Check scanf's
return value.
* doc/bison.texi: Likewise, but only for the second example, to avoid
cluttering the very simple case.
* build-aux/update-test: When given a directory, use the testsuite.log
which it contains.
Do not accept empty "from"s, as substituting the empty string with
something is rarely a good idea.
* maint:
news: update
maint: post-release administrivia
version 3.6.1
c++: style: reorder generated code
c++: provide yy::parser::symbol_type::name
c++: make parser::symbol_name public
examples: beware of ~/.inputrc
build: also provide lzip compressed tarballs
style: minor fixes
yacc.c: restore ansi-c compatibility
Reported by Paul Eggert.
* src/getargs.c: We don't need it anyway, since we use _Noreturn.
* data/skeletons/c.m4: While at it, update the definition of _Noreturn
stolen from gnulib.
The implementation of yy::parser::symbol_name is emitted even before
the implementation of yy::parser::parser. This makes little sense.
* data/skeletons/lalr1.cc (symbol_name): Move its implementation in
the same place as in the class definition: after "error" and before
"context".
Reported by Martin Blais <blais@furius.ca>.
https://lists.gnu.org/r/help-bison/2020-05/msg00005.html
* data/skeletons/lalr1.cc (symbol_name): Make it public.
Add a private hidden hook to enable testing of private parts.
* tests/local.at (AT_DATA_GRAMMAR_PROLOGUE): Help Emacs find the right
language mode.
* tests/c++.at (C++ Variant-based Symbols Unit Tests): Check that we
can read symbol_name.
Suggested by Matias Fonzo <selk@dragora.org>.
* cfg.mk: Post announcements to bison-announce.
* configure.ac: Build lzip packages.
* .travis.yml: Build only xz, we don't care about the other formats
here.
