path: root/ChangeLog

2011-10-27         Arnold D. Robbins     <arnold@skeeve.com>

	* builtin.c (do_strftime): Per Pat Rankin, instead of casting
	fclock, use a long variable and check for negative or overflow.

2011-10-25         Arnold D. Robbins     <arnold@skeeve.com>

	Merge with gawk_performance branch done. Additionally:

	* cint_array.c, int_array.c, str_array.c: Fix compiler complaints
	about printf formats (signed / unsigned vs. %d / %u).
	* eval.c (setup_frame): Add a missing return value.

2011-10-25         Arnold D. Robbins     <arnold@skeeve.com>

	* Makefile.am (dist-hook): Use `cd $(srcdir)/pc' so that
	`make distcheck' works completely.
	* builtin.c (do_strftime): Add cast to long int in check
	for fclock < 0 for systems where time_t is unsigned (e.g., VMS).

2011-10-25  Stefano Lattarini  <stefano.lattarini@gmail.com>

	dist: generated file `version.c' is not removed by "make distclean"

	* Makefile.am (distcleancheck_listfiles): Define to ignore the
	generated `version.c' file.

2011-10-24         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c (wcscoll): Create for VMS.
	* Makefile.am (dist-hook): Run sed scripts to make pc/config.h.

2011-10-24  Eli Zaretskii  <eliz@gnu.org>

	* builtin.c [HAVE_POPEN_H]: Include "popen.h".
	* README.git: Update for pc/ systems.

2011-10-21         Arnold D. Robbins     <arnold@skeeve.com>

	* Makefile.am (distcleancheck_listfiles): Added, per advice from
	Stefano Lattarini <stefano.lattarini@gmail.com>.
	* dfa.c: Additional faking of mbsupport for systems without it;
	mainly VMS.

2011-10-21  Stefano Lattarini  <stefano.lattarini@gmail.com>

	* configure.ac (AM_C_PROTOTYPES): Remove call to this macro.
	The comments in configure.ac said that the call to AM_C_PROTOTYPES
	was needed for dfa.h, synced from GNU grep; but this statement is
	not true anymore in grep since commit v2.5.4-24-g9b5e7d4 "replace
	AC_CHECK_* with gnulib modules", dating back to 2009-11-26.  Also,
	the support for automatic de-ANSI-fication has been deprecated in
	automake 1.11.2, and will be removed altogether in automake 1.12.
	* vms/vms-conf.h (PROTOTYPES, __PROTOTYPES): Remove these #define,
	they are not used anymore.
	* pc/config.h (PROTOTYPES): Likewise.

2011-10-18         Dave Pitts            <dpitts@cozx.com>

	* dfa.c: Move some decls to the top of their functions for
	C90 compilers.

2011-10-18         Arnold D. Robbins     <arnold@skeeve.com>

	* builtin.c (do_strftime): Add check for negative / overflowed
	time_t value with fatal error. Thanks to Hermann Peifer
	<peifer@gmx.eu> for the bug report.
	* dfa.c (setbit_wc): Non-MBS version. Add a return false
	since VMS compiler doesn't understand that abort doesn't return.

2011-10-10         Arnold D. Robbins     <arnold@skeeve.com>

	* builtin.c (do_sub): Init textlen to zero to avoid "may be
	used unitialized" warning. Thanks to Corinna Vinschen for
	pointing this out.
	* eval.c (unwind_stack): Add parentheses around condition in while
	to avoid overzealous warning from GCC.

2011-09-30  Eli Zaretskii  <eliz@gnu.org>

	* io.c (remap_std_file): Fix non-portable code that caused
	redirected "print" to fail if a previous read from standard input
	returned EOF.  Reported by David Millis <tvtronix@yahoo.com>.
	(remap_std_file): Per Eli's suggestion, removed the leading close
	of oldfd and will let dup2 do the close for us.

2011-10-11         John Haque     <j.eh@mchsi.com>

	* symbol.c: Add licence notice.
	* array.c (PREC_NUM, PREC_STR): Define as macros.

2011-10-09         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c: Sync with GNU grep.

2011-10-07         John Haque     <j.eh@mchsi.com>

	Tail recursion optimization.
	* awkgram.y (grammar, mk_function): Recognize tail-recursive
	calls.
	* awk.h (tail_call, num_tail_calls): New defines.
	* eval.c (setup_frame): Reuse function call stack for
	tail-recursive calls.
	(dump_fcall_stack): Reworked.

2011-10-04         Arnold D. Robbins     <arnold@skeeve.com>

	* awk.h, main.c (gawk_mb_cur_max): Make it a constant 1 when
	MBS_SUPPORT isn't available to allow GCC dead code constant
	expression computation and dead code elimination to help out.

2011-10-02         Arnold D. Robbins     <arnold@skeeve.com>

	* io.c (rsnullscan, get_a_record): Fix the cases where terminators
	are incomplete when RS == "". Also fix the case where the new value
	is shorter than the old one.  Based on patch from Rogier
	<rogier777@gmail.com> as submitted by Jeroen Schot
	<schot@A-Eskwadraat.nl>.

2011-09-24         Arnold D. Robbins     <arnold@skeeve.com>

	* eval.c, io.c, re.c: Fix some spelling errors. Thanks to
	Jeroen Schot <schot@A-Eskwadraat.nl>.

2011-09-21         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c, mbsupport.h: Sync with GNU grep. Large amount of changes
	that remove many ifdefs, moving many conditions for multibyte
	support into regular C code and relying GCC's dead code optimization
	to elimnate code that won't be needed.
	* dfa.c: For gawk, add a number of additional defines so that things
	will compile if MBS_SUPPORT is 0.
	* array.c, awk.h, awkgram.y, builtin.c, eval.c, field.c, main.c,
	node.c, re.c: Change `#ifdef MBS_SUPPORT' to `#if MBS_SUPPORT'.
	* awk.h, regex_internal.h: Move NO_MBSUPPORT handling to ...
	* mbsupport.h: ...here.

2011-09-16         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c: Sync with GNU grep.

2011-09-08         John Haque     <j.eh@mchsi.com>

	Optimization for compound assignment, increment and
	decrement operators; Avoid unref and make_number calls
	when there is no extra references to the value NODE.

2011-09-03         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c: Sync with GNU grep.

2011-08-31         John Haque     <j.eh@mchsi.com>

	Grammar related changes: Simplify grammar for user-defined
	functions and general cleanups.

	* symbol.c: New file.
	* awkgram.y: Move symbol table related routines to the
	new file.
	(rule, func_name, function_prologue, param_list): Reworked.
	(install_function, check_params): Do all error checkings
	for the function name and parameters before installing in
	the symbol table.
	(mk_function): Finalize function definition.
	(func_install, append_param, dup_params): Nuked.
	* symbol.c (make_params): allocate function parameter nodes
	for the symbol table. Use the hash node as Node_param_list;
	Saves a NODE for each parameter.
	(install_params): Install function parameters into the symbol
	table.
	(remove_params): Remove parameters out of the symbol table.
	* awk.h (parmlist, FUNC): Nuked.
	(fparms): New define.


	Dynamically loaded function parameters are now handled like
	those for a builtin.

	* awk.h (Node_ext_func, Op_ext_builtin): New types.
	(Op_ext_func): Nuked.
	* ext.c (make_builtin): Simplified.
	(get_curfunc_arg_count): Nuked; Use the argument 'nargs' of
	the extension function instead.
	(get_argument, get_actual_argument): Adjust.
	* eval.c (r_interpret): Update case Op_func_call for a dynamic
	extension function. Handle the new opcode Op_ext_builtin.
	* pprint (profile.c): Adjust.


	Use a single variable to process gawk options.

	* awk.h (do_flags): New variable.
	(DO_LINT_INVALID, DO_LINT_ALL, DO_LINT_OLD, DO_TRADITIONAL,
	DO_POSIX, DO_INTL, DO_NON_DEC_DATA, DO_INTERVALS,
	DO_PROFILING, DO_DUMP_VARS, DO_TIDY_MEM,
	DO_SANDBOX): New defines.
	(do_traditional, do_posix, do_intervals, do_intl,
	do_non_decimal_data, do_profiling, do_dump_vars,
	do_tidy_mem, do_sandbox, do_lint,
	do_lint_old): Defined as macros.	
	* main.c: Remove definitions of the do_XX variables. Add
	do_flags definition.
	* debug.c (execute_code, do_eval, parse_condition): Save
	do_flags before executing/parsing and restore afterwards.


	Nuke PERM flag. Always increment/decrement the reference
	count for a Node_val. Simplifies macros and avoids
	occassional memory leaks, specially in the debugger.

	* awk.h (UPREF, DEREF, dupnode, unref): Simplified.
	(mk_number): Nuked.
	* (*.c): Increment the reference count of Nnull_string before
	assigning as a value.


	Revamped array handling mechanism for more speed and
	less memory consumption.

	* awk.h (union bucket_item, BUCKET): New definitions. Used as
	bucket elements for the hash table implementations of arrays;
	40% space saving in 32 bit x86.
	(buckets, nodes, array_funcs, array_base, array_capacity,
	xarray, alookup, aexists, aclear, aremove, alist,
	acopy, adump, NUM_AFUNCS): New defines.
	(array_empty): New macro to test for an empty array.
	(assoc_lookup, in_array): Defined as macros.
	(enum assoc_list_flags): New declaration.
	(Node_ahash, NUMIND): Nuked.
	* eval.c (r_interpret): Adjust cases Op_subscript,
	Op_subscript_lhs, Op_store_var and Op_arrayfor_incr.
	* node.c (dupnode, unref): Removed code related to Node_ahash. 
	* str_array.c: New file to handle array with string indices.
	* int_array.c: New file to handle array with integer indices.
	* cint_array.c: New file. Special handling of arrays with
	(mostly) consecutive integer indices.


	Memory pool management reworked to handle NODE and BUCKET.

	* awk.h (struct block_item, BLOCK, block_id): New definitions.
	(getblock, freeblock): New macros.
	(getbucket, freebucket): New macros to allocate and deallocate
	a BUCKET.
	(getnode, freenode): Adjusted.
	* node.c (more_nodes): Nuked.
	(more_blocks): New routine to allocate blocks of memory.

2011-08-24         Arnold D. Robbins     <arnold@skeeve.com>

	Fix pty co-process communication on Ubuntu GNU/Linux.

	* io.c: Add include of <sys/ioctl.h> to get definition of TIOCSCTTY.
	(two_way_open): Move call for this ioctl to after setsid() call.

2011-08-23         Arnold D. Robbins     <arnold@skeeve.com>

	* regex_internal.c (re_string_fetch_byte_case ): Remove
	__attribute((pure)) since it causes failures with gcc -O2
	-fno-inline. Thanks to Neil Cahill <ncahill_alt@yahoo.com>
	for reporting the bug.

2011-08-10         John Haque      <j.eh@mchsi.com>

	BEGINFILE/ENDFILE related code redone.

	* awk.h (prev_frame_size, has_endfile, target_get_record,
	target_newfile): New defines.
	* awkgram.y (mk_program): Initialize has_endfile appropriately for
	Op_get_record.
	(parse_program): Initialize new jump targets for
	Op_get_record and Op_newfile.
	* eval.c (unwind_stack): Change argument to number of
	items to be left in the stack. Adjust code.
	(pop_fcall, pop_stack): New defines.
	(setup_frame): Initialize prev_frame_size.
	(exec_state, EXEC_STATE): New structure and typedef.
	(exec_state_stack): New variable.
	(push_exec_state, pop_exec_state): New functions to save and
	later retrieve an execution state.
	(r_interpret): Use the new functions and the defines in
	cases Op_K_getline, Op_after_beginfile, Op_after_endfile,
	Op_newfile and Op_K_exit.
	* io.c (after_beginfile): When skipping a file using nextfile,
	return zero in case there was an error opening the file. 
	(has_endfile): Nuke global variable.
	(inrec): Add a second argument to pass errno to the calling
	routine.
	* debug.c (print_instruction): Update cases.

2011-08-10         Arnold D. Robbins     <arnold@skeeve.com>

	Fix (apparently long-standing) problem with FIELDWIDTHS.
	Thanks to Johannes Meixner <jsmeix@suse.de>.

	* field.c (set_FIELDWIDTHS): Adjust calculations.

	Fix problem with FPAT, reported by "T. X. G." <leopardie333@yahoo.com>

	* awk.h (Regexp): Add new member 'non_empty'.
	* field.c (fpat_parse_field): Save/restore local variable non_empty
	from member in Regexp struct.

2011-08-09         Arnold D. Robbins     <arnold@skeeve.com>

	Fix pty issue reported by "T. X. G." <leopardie333@yahoo.com>

	* configure.ac: Check for setsid.
	* awk.h: If not HAVE_SETSID define it as an empty macro.
	* io.c (two_way_open): Call setsid if using pty's.

2011-07-29  Eli Zaretskii  <eliz@gnu.org>

	* builtin.c (format_tree): Rename small -> small_flag,
	big -> big_flag, bigbig -> bigbig_flag.  Solves compilation errors
	when building Gawk with libsigsegv on MS-Windows, see
	https://lists.gnu.org/archive/html/bug-gawk/2011-07/msg00029.html.

2011-07-28         Arnold D. Robbins     <arnold@skeeve.com>

	* builtin.c (do_sub): Revert to gawk 3.1 behavior for backslash
	handling. It was stupid to think I could break compatibility.
	Thanks to John Ellson <ellson@research.att.com> for raising
	the issue.

2011-07-26         John Haque      <j.eh@mchsi.com>

	* eval.c (r_interpret): In cases Op_var_assign and Op_field_assign,
	include Op_K_getline_redir in the test for skipping the routine.

2011-07-26         John Haque      <j.eh@mchsi.com>

	Fix handling of assign routines for 'getline var'.
	Rework the previous fix for (g)sub.

	* awk.h: New define assign_ctxt for use in Op_var_assign
	and Op_field_assign opcodes. Remove define AFTER_ASSIGN.
	* awkgram.y (snode, mk_getline): Initialize assign_ctxt.
	* builtin.c (do_sub): Adjust to take only the first two
	arguments.
	* eval.c (r_interpret): In cases Op_var_assign and Op_field_assign,
	skip the routine as appropriate. Adjust case Op_sub_builtin.
	* main.c (get_spec_varname): New function.
	* debug.c (print_instruction): Use the new function to get
	special variable name.

2011-07-17         Arnold D. Robbins     <arnold@skeeve.com>

	* main.c (varinit): Mark FPAT as NON_STANDARD. Thanks to
	Wolfgang Seeberg <wolfgang.seeberg@yahoo.com> for the report.
	* Makefile.am (EXTRA_DIST): Add po/README, per advice from
	Bruno Haible.
	* dfa.c: Sync with GNU grep.
	* xalloc.h (xzalloc): New function, from GNU grep, for dfa.c.
	* README: Note that bug list is really a real mailing list.

2011-07-16         Arnold D. Robbins     <arnold@skeeve.com>

	* Makefile.am (AUTOMAKE_OPTIONS): Removed.
	* configure.ac (AM_INIT_AUTOMAKE): Removed dist-bzip2 option, on
	advice from Karl Berry.

2011-07-15         John Haque      <j.eh@mchsi.com>

	* awk.h (Op_sub_builtin): New opcode.
	(GSUB, GENSUB, AFTER_ASSIGN, LITERAL): New flags for 
	Op_sub_builtin.
	* awkgram.y (struct tokentab): Change opcode to	Op_sub_builtin
	for sub, gsub and gensub.
	(snode): Update processing of sub, gsub and gensub.
	* builtin.c (do_sub, do_gsub, do_gensub): Nuke.
	(sub_common): Renamed to do_sub. Relocate gensub argument
	handling code from do_gensub to here; Simplify the code a
	little bit. 
	* eval.c (r_interpret): Handle Op_sub_builtin. Avoid field
	re-splitting or $0 rebuilding if (g)sub target string is
	a field and no substitutions were done.
	* pprint (profile.c): Add case for the new opcode.
	* print_instruction (debug.c): Ditto.

2011-07-15         Arnold D. Robbins     <arnold@skeeve.com>

	* awk.h: Typo fix: "loner" --> longer. Thanks to Nelson Beebe.
	* builtin.c (efwrite): Fix flushing test back to what it was 
	in 3.1.8. Thanks to Strefil <strefil@yandex.ru> for the problem
	report.
	* configure.ac: Bump version to 4.0.0a for stable branch.

2011-06-24         Arnold D. Robbins     <arnold@skeeve.com>

	* Makefile.am (EXTRA_DIST): Add ChangeLog.0.
	* 4.0.0: Remake the tar ball.

2011-06-23         Arnold D. Robbins     <arnold@skeeve.com>

	* configure.ac: Update version to 4.0.0.
	* configure: Regenerated.
	* ChangeLog.0: Rotated ChangeLog into this file.
	* ChangeLog: Created anew for gawk 4.0.0 and on.
	* README: Bump version to 4.0.0.
	* 4.0.0: Release tar ball made.