to check for invalid inputs.
Use mbsnwidth to count columns correctly. Account for tabs, too.
Include mbswidth.h.
(YY_USER_ACTION): Invoke extend_location rather than LOCATION_COLUMNS.
(extend_location): New function.
(YY_LINES): Remove.
Handle CRLF in C code rather than in Lex code.
(YY_INPUT): New macro.
(no_cr_read): New function.
Scan UCNs, even though we don't fully handle them yet.
(convert_ucn_to_byte): New function.
Handle backslash-newline correctly in C code.
(SC_LINE_COMMENT, SC_YACC_COMMENT): New states.
(eols, blanks): Remove. YY_USER_ACTION now counts newlines etc.;
all uses changed.
(tag, splice): New EREs. Do not allow NUL or newline in tags.
Use {splice} wherever C allows backslash-newline.
YY_STEP after space, newline, vertical-tab.
("/*"): BEGIN SC_YACC_COMMENT, not yy_push_state (SC_COMMENT).
(letter, id): Don't assume ASCII; e.g., spell out a-z.
({int}, handle_action_dollar, handle_action_at): Check for integer
overflow.
(YY_STEP): Omit trailing semicolon, so that it's more like C.
(<SC_ESCAPED_STRING,SC_ESCAPED_CHARACTER>): Allow \0 and \00
as well as \000. Check for UCHAR_MAX, not 255.
Allow \x with an arbitrary positive number of digits, as in C.
Check for overflow here.
Allow \? and UCNs, for compatibility with C.
(handle_symbol_code_dollar): Use quote_n slot 1 to avoid collision
with quote slot used by complain_at.
(Symbols): Document that trigraphs have no special meaning in Bison,
nor is backslash-newline allowed.
(Actions): Document that trigraphs have no special meaning.
Check for close failures.
* src/files.h (xfclose): Return void, not int, since it always
returned zero.
* src/files.c (xfclose): Likewise. Report I/O error if ferror
indicates one.
* src/output.c (output_skeleton): Use xfclose rather than fclose
and ferror. xfclose now checks ferror.
* data/glr.c (YYLEFTMOST_STATE): Remove.
(yyreportTree): Use a stack-based leftmost state. This avoids
our continuing battles with bogus warnings about initializers.
* tests/cxx-type.at (_AT_TEST_GLR_CALC): Include stdlib.h, since
we use malloc. Don't assume 'A' through 'Z' are contiguous.
Don't assume strdup exists; POSIX says its an XSI extension.
Check for buffer overflow on input.
we use malloc. Don't assume 'A' through 'Z' are contiguous.
Don't assume strdup exists; POSIX says its an XSI extension.
Check for buffer overflow on input.
* data/c.m4 (m4_int_type): Don't use yysigned_char, but `signed
char' as only yacc.c wants K&R portability.
* data/glr.c (yysigned_char): Remove.
* data/lalr1.cc: Rename the trailing b4_name as b4_parser_class_name.
Reported by Quoc Peyrot.
non-fatal error occurs. Formerly, the times were reported in some
such cases but not in others.
* src/reader.c (reader): Just return if a complaint has been issued,
instead of exiting, so that 'main' can report times.
* src/complain.c (warning_issued): Renamed from warn_message_count; now bool.
(complaint_issued): Renamed from complain_message_count; likewise.
* src/main.c (main): Use exit to exit with failure.
* src/complain.c (fatal_at, fatal): Use EXIT_FAILURE and EXIT_SUCCESS
rather than 1 and 0.
* src/main.c (main): Likewise.
* src/getargs.c (getargs): Likewise.
* src/reader.c (reader): Likewise.
* src/getarg.c (getargs): Remove duplicate code for
"Try `bison --help'".
* src/files.c (xfopen, xfclose): Use EXIT_FAILURE rather than 2.
What was that "2" for?
* src/complain.h (fatal, fatal_at): Add __attribute__((__noreturn__)).
* src/getargs.c (usage): Likewise.
* src/getargs.c (getargs): When there are too few operands, report
the last one. When there are too many, report the first extra
one. This is how diffutils does it.
