* process.c: Rename or move locals to avoid shadowing.
[bpt/emacs.git] / src / ChangeLog
index 44e4494..df1c683 100644 (file)
@@ -1,3 +1,412 @@
+2011-03-20  Paul Eggert  <eggert@cs.ucla.edu>
+
+       * process.c: Rename or move locals to avoid shadowing.
+       (list_processes_1, Fmake_network_process):
+       (read_process_output_error_handler, exec_sentinel_error_handler):
+       Rename or move locals.
+
+2011-03-19  Paul Eggert  <eggert@cs.ucla.edu>
+
+       Make tparam.h and terminfo.c consistent.
+       * cm.c (tputs, tgoto, BC, UP): Remove extern decls.  Include
+       tparam.h instead, since it declares them.
+       * cm.h (PC): Remove extern decl; tparam.h now does this.
+       * deps.mk (cm.o, terminfo.o): Depend on tparam.h.
+       * terminfo.c: Include tparam.h, to check interfaces.
+       (tparm): Make 1st arg a const pointer in decl.  Put it at top level.
+       (tparam): Adjust signature to match interface in tparam.h;
+       this removes some undefined behavior.  Check that outstring and len
+       are zero, which they always are with Emacs.
+       * tparam.h (PC, BC, UP): New extern decls.
+
+       * xftfont.c (xftfont_shape): Now static, and defined only if needed.
+       (xftfont_open): Rename locals to avoid shadowing.
+
+       * ftfont.c (ftfont_resolve_generic_family): Fix pointer signedness.
+       (ftfont_otf_capability, ftfont_shape): Omit decls if not needed.
+       (OTF_TAG_SYM): Omit macro if not needed.
+       (ftfont_list): Remove unused local.
+       (get_adstyle_property, ftfont_pattern_entity):
+       (ftfont_lookup_cache, ftfont_open, ftfont_anchor_point):
+       Rename locals to avoid shadowing.
+
+       * xfont.c (xfont_list_family): Mark var as initialized.
+
+       * xml.c (make_dom): Now static.
+
+       * composite.c (composition_compute_stop_pos): Rename local to
+       avoid shadowing.
+       (composition_reseat_it): Remove unused locals.
+       (find_automatic_composition, composition_adjust_point): Likewise.
+       (composition_update_it): Mark var as initialized.
+       (find_automatic_composition): Mark vars as initialized,
+       with a FIXME (Bug#8290).
+
+2011-03-18  Paul Eggert  <eggert@cs.ucla.edu>
+
+       character.h: Rename locals to avoid shadowing.
+       * character.h (PREV_CHAR_BOUNDARY, FETCH_STRING_CHAR_ADVANCE):
+       (FETCH_STRING_CHAR_AS_MULTIBYTE_ADVANCE, FETCH_CHAR_ADVANCE):
+       (FETCH_CHAR_ADVANCE_NO_CHECK, INC_POS, DEC_POS, BUF_INC_POS):
+       (BUF_DEC_POS): Be more systematic about renaming local temporaries
+       to avoid shadowing.
+
+       * textprop.c (property_change_between_p): Remove; unused.
+
+       * intervals.c (interval_start_pos): Now static.
+
+       * intervals.h (CHECK_TOTAL_LENGTH): Avoid empty "else".
+
+       * atimer.c (start_atimer, append_atimer_lists, set_alarm): Rename
+       locals to avoid shadowing.
+
+       * sound.c (wav_play, au_play, Fplay_sound_internal):
+       Fix pointer signedness.
+       (alsa_choose_format): Remove unused local var.
+       (wav_play): Initialize a variable to 0, to prevent undefined
+       behavior (Bug#8278).
+
+       * region-cache.c (insert_cache_boundary): Redo var to avoid shadowing.
+
+       * region-cache.h (pp_cache): New decl, for gcc -Wmissing-prototypes.
+
+       * callproc.c (Fcall_process): Use 'volatile' to avoid vfork clobbering.
+       * sysdep.c (sys_subshell): Likewise.
+       Previously, the sys_subshell 'volatile' was incorrectly IF_LINTted out.
+
+       * lisp.h (child_setup): Now NO_RETURN unless DOS_NT.
+       This should get cleaned up, so that child_setup has the
+       same signature on all platforms.
+
+       * callproc.c (call_process_cleanup): Now static.
+       (relocate_fd): Rename locals to avoid shadowing.
+
+2011-03-17  Eli Zaretskii  <eliz@gnu.org>
+
+       * makefile.w32-in ($(BLD)/unexw32.$(O)): Depend on $(SRC)/unexec.h.
+
+2011-03-17  Paul Eggert  <eggert@cs.ucla.edu>
+
+       Fix more problems found by GCC 4.5.2's static checks.
+
+       * process.c (make_serial_process_unwind, send_process_trap):
+       (sigchld_handler): Now static.
+
+       * process.c (allocate_pty): Let PTY_ITERATION declare iteration vars.
+       That way, the code declares only the vars that it needs.
+       * s/aix4-2.h (PTY_ITERATION): Declare iteration vars.
+       * s/cygwin.h (PTY_ITERATION): Likewise.
+       * s/darwin.h (PTY_ITERATION): Likewise.
+       * s/gnu-linux.h (PTY_ITERATION): Likewise.
+
+       * s/irix6-5.h (PTY_OPEN): Declare stb, to loosen coupling.
+       * process.c (allocate_pty): Don't declare stb unless it's needed.
+
+       * bytecode.c (MAYBE_GC): Rewrite so as not to use empty "else".
+       (CONSTANTLIM): Remove; unused.
+       (METER_CODE, Bscan_buffer, Bread_char, Bset_mark):
+       Define only if needed.
+
+       * unexelf.c (unexec): Name an expression,
+       to avoid gcc -Wbad-function-cast warning.
+       Use a different way to cause a compilation error if anyone uses
+       n rather than nn, a way that does not involve shadowing.
+       (ELF_BSS_SECTION_NAME, OLD_PROGRAM_H): Remove; unused.
+
+       * deps.mk (unexalpha.o): Remove; unused.
+
+       New file unexec.h, the (simple) interface for unexec (Bug#8267).
+       * unexec.h: New file.
+       * deps.mk (emacs.o, unexaix.o, unexcw.o, unexcoff.o, unexelf.o):
+       (unexhp9k800.o, unexmacosx.o, unexsol.o, unexw32.o):
+       Depend on unexec.h.
+       * emacs.c [!defined CANNOT_DUMP]: Include unexec.h.
+       * unexaix.c, unexcoff.c, unexcw.c, unexelf.c, unexhp9k800.c:
+       * unexmacosx.c, unexsol.c, unexw32.c: Include unexec.h.
+       Change as necessary to match prototype in unexec.h.
+
+       * syntax.c (Fforward_comment, scan_lists): Rename locals to avoid
+       shadowing.
+       (back_comment, skip_chars): Mark vars as initialized.
+
+       * character.h (FETCH_STRING_CHAR_ADVANCE_NO_CHECK, BUF_INC_POS):
+       Rename locals to avoid shadowing.
+
+       * lread.c (read1): Rewrite so as not to use empty "else".
+       (Fload, readevalloop, read1): Rename locals to avoid shadowing.
+
+       * print.c (Fredirect_debugging_output): Fix pointer signedess.
+
+       * lisp.h (debug_output_compilation_hack): Add decl here, to avoid
+       warning when compiling print.c.
+
+       * font.c (font_unparse_fcname): Abort in an "impossible" situation
+       instead of using an uninitialized var.
+       (font_sort_entities): Mark var as initialized.
+
+       * character.h (FETCH_CHAR_ADVANCE): Rename locals to avoid shadowing.
+
+       * font.c (font_unparse_xlfd): Don't mix pointers to variables with
+       pointers to constants.
+       (font_parse_fcname): Remove unused vars.
+       (font_delete_unmatched): Now static.
+       (font_get_spec): Remove; unused.
+       (font_style_to_value, font_prop_validate_style, font_unparse_fcname):
+       (font_update_drivers, Ffont_get_glyphs, font_add_log):
+       Rename or move locals to avoid shadowing.
+
+       * fns.c (require_nesting_list, require_unwind): Now static.
+       (Ffillarray): Rename locals to avoid shadowing.
+
+       * floatfns.c (domain_error2): Define only if needed.
+       (Ffrexp, Fldexp): Rename locals to avoid shadowing.
+
+       * alloc.c (mark_backtrace): Move decl from here ...
+       * lisp.h: ... to here, so that it can be checked.
+
+       * eval.c (call_debugger, do_debug_on_call, grow_specpdl): Now static.
+       (Fdefvar): Rewrite so as not to use empty "else".
+       (lisp_indirect_variable): Name an expression,
+       to avoid gcc -Wbad-function-cast warning.
+       (Fdefvar): Rename locals to avoid shadowing.
+
+       * callint.c (quotify_arg, quotify_args): Now static.
+       (Fcall_interactively): Rename locals to avoid shadowing.
+       Use const pointer when appropriate.
+
+       * lisp.h (get_system_name, get_operating_system_release):
+       Move decls here, to check interfaces.
+       * process.c (get_operating_system_release): Move decl to lisp.h.
+       * xrdb.c (get_system_name): Likewise.
+       * editfns.c (init_editfns, Fuser_login_name, Fuser_uid):
+       (Fuser_real_uid, Fuser_full_name): Remove unnecessary casts,
+       some of which prompt warnings from gcc -Wbad-function-cast.
+       (Fformat_time_string, Fencode_time, Finsert_char):
+       (Ftranslate_region_internal, Fformat):
+       Rename or remove local vars to avoid shadowing.
+       (Ftranslate_region_internal): Mark var as initialized.
+
+       * doc.c (Fdocumentation, Fsnarf_documentation): Move locals to
+       avoid shadowing.
+
+       * lisp.h (eassert): Check that the argument compiles, even if
+       ENABLE_CHECKING is not defined.
+
+       * data.c (Findirect_variable): Name an expression, to avoid
+       gcc -Wbad-function-cast warning.
+       (default_value, arithcompare, arith_driver, arith_error): Now static.
+       (store_symval_forwarding): Rename local to avoid shadowing.
+       (Fmake_variable_buffer_local, Fmake_local_variable): Mark
+       variables as initialized.
+       (do_blv_forwarding, do_symval_forwarding): Remove; unused.
+
+       * alloc.c (check_cons_list): Do not define unless GC_CHECK_CONS_LIST.
+       (Fmake_vector, Fvector, Fmake_byte_code, Fgarbage_collect):
+       Rename locals to avoid shadowing.
+       (mark_stack): Move local variables into the #ifdef region where
+       they're used.
+       (BLOCK_INPUT_ALLOC, UNBLOCK_INPUT_ALLOC): Define only if
+       ! defined SYSTEM_MALLOC && ! defined SYNC_INPUT, as they are not
+       needed otherwise.
+       (CHECK_ALLOCATED): Define only if GC_CHECK_MARKED_OBJECTS.
+       (GC_STRING_CHARS): Remove; not used.
+       (Fmemory_limit): Cast sbrk's returned value to char *.
+
+       * lisp.h (check_cons_list): Declare if GC_CHECK_CONS_LIST; this
+       avoids undefined behavior in theory.
+
+       * regex.c (IF_LINT): Add defn, for benefit of ../lib-src.
+
+       Use functions, not macros, for up- and down-casing (Bug#8254).
+       * buffer.h (DOWNCASE_TABLE, UPCASE_TABLE, DOWNCASE, UPPERCASEP):
+       (NOCASEP, LOWERCASEP, UPCASE, UPCASE1): Remove.  All callers changed
+       to use the following functions instead of these macros.
+       (downcase): Adjust to lack of DOWNCASE_TABLE.  Return int, not
+       EMACS_INT, since callers assume the returned value fits in int.
+       (upcase1): Likewise, for UPCASE_TABLE.
+       (uppercasep, lowercasep, upcase): New static inline functions.
+       * editfns.c (Fchar_equal): Remove no-longer-needed workaround for
+       the race-condition problem in the old DOWNCASE.
+
+       * regex.c (CHARSET_LOOKUP_RANGE_TABLE_RAW, POP_FAILURE_REG_OR_COUNT):
+       Rename locals to avoid shadowing.
+       (regex_compile, re_match_2_internal): Move locals to avoid shadowing.
+       (regex_compile, re_search_2, re_match_2_internal):
+       Remove unused local vars.
+       (FREE_VAR): Rewrite so as not to use empty "else",
+       which gcc can warn about.
+       (regex_compile, re_match_2_internal): Mark locals as initialized.
+       (RETALLOC_IF): Define only if needed.
+       (WORDCHAR_P): Likewise.  This one is never needed, but is used
+       only in a comment talking about a compiler bug, so put inside
+       the #if 0 of that comment.
+       (CHARSET_LOOKUP_BITMAP, FAIL_STACK_FULL, RESET_FAIL_STACK):
+       (PUSH_FAILURE_ELT, BUF_PUSH_3, STOP_ADDR_VSTRING):
+       Remove; unused.
+
+       * search.c (boyer_moore): Rename locals to avoid shadowing.
+       * character.h (FETCH_STRING_CHAR_AS_MULTIBYTE_ADVANCE):
+       (PREV_CHAR_BOUNDARY): Likewise.
+
+       * search.c (simple_search): Remove unused var.
+
+       * dired.c (compile_pattern): Move decl from here ...
+       * lisp.h: ... to here, so that it can be checked.
+       (struct re_registers): New forward decl.
+
+       * character.h (INC_POS, DEC_POS): Rename locals to avoid shadowing.
+
+       * indent.c (MULTIBYTE_BYTES_WIDTH): New args bytes, width.
+       All uses changed.
+       (MULTIBYTE_BYTES_WIDTH, scan_for_column, compute_motion):
+       Rename locals to avoid shadowing.
+       (Fvertical_motion): Mark locals as initialized.
+
+       * casefiddle.c (casify_object, casify_region): Now static.
+       (casify_region): Mark local as initialized.
+
+       * cmds.c (internal_self_insert): Rename local to avoid shadowing.
+
+       * lisp.h (GCPRO2_VAR, GCPRO3_VAR, GCPRO4_VAR, GCPRO5_VAR, GCPRO6_VAR):
+       New macros, so that the caller can use some names other than
+       gcpro1, gcpro2, etc.
+       (GCPRO2, GCPRO3, GCPRO4, GCPRO5, GCPRO6): Reimplement in terms
+       of the new macros.
+       (GCPRO1_VAR, UNGCPRO_VAR): Change the meaning of the second
+       argument, for consistency with GCPRO2_VAR, etc: it is now the
+       prefix of the variable, not the variable itself.  All uses
+       changed.
+       * dired.c (directory_files_internal, file_name_completion):
+       Rename locals to avoid shadowing.
+
+       Fix a race condition diagnosed by gcc -Wsequence-point (Bug#8254).
+       An expression of the form (DOWNCASE (x) == DOWNCASE (y)), found in
+       dired.c's scmp function, had undefined behavior.
+       * lisp.h (DOWNCASE_TABLE, UPCASE_TABLE, DOWNCASE, UPPERCASEP):
+       (NOCASEP, LOWERCASEP, UPCASE, UPCASE1): Move from here ...
+       * buffer.h: ... to here, because these macros use current_buffer,
+       and the new implementation with inline functions needs to have
+       current_buffer in scope now, rather than later when the macros
+       are used.
+       (downcase, upcase1): New static inline functions.
+       (DOWNCASE, UPCASE1): Reimplement using these functions.
+       This avoids undefined behavior in expressions like
+       DOWNCASE (x) == DOWNCASE (y), which previously suffered
+       from race conditions in accessing the global variables
+       case_temp1 and case_temp2.
+       * casetab.c (case_temp1, case_temp2): Remove; no longer needed.
+       * lisp.h (case_temp1, case_temp2): Remove their decls.
+       * character.h (ASCII_CHAR_P): Move from here ...
+       * lisp.h: ... to here, so that the inline functions mentioned
+       above can use them.
+
+       * dired.c (directory_files_internal_unwind): Now static.
+
+       * fileio.c (file_name_as_directory, directory_file_name):
+       (barf_or_query_if_file_exists, auto_save_error, auto_save_1):
+       Now static.
+       (file_name_as_directory): Use const pointers when appropriate.
+       (Fexpand_file_name): Likewise.  In particular, newdir might
+       point at constant storage, so make it a const pointer.
+       (Fmake_directory_internal, Fread_file_name): Remove unused vars.
+       (Ffile_selinux_context, Fset_file_selinux_context): Fix pointer
+       signedness issues.
+       (Fset_file_times, Finsert_file_contents, auto_save_error):
+       Rename locals to avoid shadowing.
+
+       * minibuf.c (choose_minibuf_frame_1): Now static.
+       (Ftry_completion, Fall_completions): Rename or remove locals
+       to avoid shadowing.
+
+       * marker.c (bytepos_to_charpos): Remove; unused.
+
+       * lisp.h (verify_bytepos, count_markers): New decls,
+       so that gcc does not warn that these functions aren't declared.
+
+       * insdel.c (check_markers, make_gap_larger, make_gap_smaller):
+       (reset_var_on_error, Fcombine_after_change_execute_1): Now static.
+       (CHECK_MARKERS): Redo to avoid gcc -Wempty-body diagnostic.
+       (copy_text): Remove unused local var.
+
+       * filelock.c (within_one_second): Now static.
+       (lock_file_1): Rename local to avoid shadowing.
+
+       * buffer.c (fix_overlays_before): Mark locals as initialized.
+       (fix_start_end_in_overlays): Likewise.  This function should be
+       simplified by using pointers-to-pointers, but that's a different
+       matter.
+       (switch_to_buffer_1): Now static.
+       (Fkill_buffer, record_buffer, Fbury_buffer, Fset_buffer_multibyte):
+       (report_overlay_modification): Rename locals to avoid shadowing.
+
+       * sysdep.c (system_process_attributes): Rename vars to avoid shadowing.
+       Fix pointer signedness issue.
+       (sys_subshell): Mark local as volatile if checking for lint,
+       to suppress a gcc -Wclobbered warning that does not seem to be right.
+       (MAXPATHLEN): Define only if needed.
+
+       * process.c (serial_open, serial_configure): Move decls from here ...
+       * systty.h: ... to here, so that they can be checked.
+
+       * fns.c (get_random, seed_random): Move extern decls from here ...
+       * lisp.h: ... to here, so that they can be checked.
+
+       * sysdep.c (reset_io): Now static.
+       (wait_for_termination_signal): Remove; unused.
+
+       * keymap.c (keymap_parent, keymap_memberp, map_keymap_internal):
+       (copy_keymap_item, append_key, push_text_char_description):
+       Now static.
+       (Fwhere_is_internal): Don't test CONSP (sequences) unnecessarily.
+       (DENSE_TABLE_SIZE): Remove; unused.
+       (get_keymap, access_keymap, Fdefine_key, Fwhere_is_internal):
+       (describe_map_tree):
+       Rename locals to avoid shadowing.
+
+       * keyboard.c: Declare functions static if they are not used elsewhere.
+       (echo_char, echo_dash, cmd_error, top_level_2):
+       (poll_for_input, handle_async_input): Now static.
+       (read_char, kbd_buffer_get_event, make_lispy_position):
+       (make_lispy_event, make_lispy_movement, apply_modifiers):
+       (decode_keyboard_code, tty_read_avail_input, menu_bar_items):
+       (parse_tool_bar_item, read_key_sequence, Fread_key_sequence):
+       (Fread_key_sequence_vector): Rename locals to avoid shadowing.
+       (read_key_sequence, read_char): Mark locals as initialized.
+       (Fexit_recursive_edit, Fabort_recursive_edit): Mark with NO_RETURN.
+
+       * keyboard.h (make_ctrl_char): New decl.
+       (mark_kboards): Move decl here ...
+       * alloc.c (mark_kboards): ... from here.
+
+       * lisp.h (force_auto_save_soon): New decl.
+
+       * emacs.c (init_cmdargs): Rename local to avoid shadowing.
+       (DEFINE_DUMMY_FUNCTION): New macro.
+       (__do_global_ctors, __do_global_ctors_aux, __do_global_dtors, __main):
+       Use it.
+       (main): Add casts to avoid warnings
+       if GCC considers string literals to be constants.
+
+       * lisp.h (fatal_error_signal): Add decl, since it's exported.
+
+       * dbusbind.c: Pointer signedness fixes.
+       (xd_signature, xd_append_arg, xd_initialize):
+       (Fdbus_call_method, Fdbus_call_method_asynchronously):
+       (Fdbus_method_return_internal, Fdbus_method_error_internal):
+       (Fdbus_send_signal, xd_read_message_1, Fdbus_register_service):
+       (Fdbus_register_signal): Use SSDATA when the context wants char *.
+
+       * dbusbind.c (Fdbus_init_bus): Add cast to avoid warning
+       if GCC considers string literals to be constants.
+       (Fdbus_register_service, Fdbus_register_method): Remove unused vars.
+
+2011-03-16  Stefan Monnier  <monnier@iro.umontreal.ca>
+
+       * print.c (PRINT_CIRCLE_CANDIDATE_P): New macro.
+       (print_preprocess, print_object): New macro to fix last change.
+
+       * print.c (print_preprocess): Don't forget font objects.
+
 2011-03-16  Juanma Barranquero  <lekktu@gmail.com>
 
        * emacs.c (USAGE3): Doc fixes.