src/.gdbinit: Set breakpoint on terminate_due_to_signal, not on
fatal_error_backtrace.
src/w32proc.c (sys_kill): Undo last change: don't do anything when
invoked to deliver SIGABRT to our own process. This is now
handled by emacs_raise.
nt/inc/ms-w32.h (emacs_raise): Redefine to invoke emacs_abort.
Fixes: debbugs:12471
* nt/inc/ms-w32.h (emacs_raise): New macro.
* src/alloc.c (die):
* src/sysdep.c (emacs_abort) [HAVE_NTGUI]:
Avoid recursive loop if there's a fatal error in the function itself.
* src/atimer.c (pending_atimers):
* src/blockinput.h: Don't include "atimer.h"; no longer needed.
(interrupt_input_pending): Remove. All uses removed.
pending_signals now counts both atimers and ordinary interrupts.
This is less racy than having three separate pending-signal flags.
(block_input, unblock_input, totally_unblock_input, unblock_input_to)
(input_blocked_p):
Rename from their upper-case counterparts BLOCK_INPUT,
UNBLOCK_INPUT, TOTALLY_UNBLOCK_INPUT, UNBLOCK_INPUT_TO,
INPUT_BLOCKED_P, and turn into functions. All uses changed.
This makes it easier to access volatile variables more accurately.
(BLOCK_INPUT_RESIGNAL): Remove. All uses replaced by unblock_input ().
(input_blocked_p): Prefer this to 'interrupt_input_blocked', as
that's more reliable if the code is buggy and sets
interrupt_input_blocked to a negative value. All uses changed.
* src/atimer.c (deliver_alarm_signal):
Remove. No need to deliver this to the parent; any thread can
handle this signal now. All uses replaced by underlying handler.
* src/atimer.c (turn_on_atimers):
* src/dispnew.c (handle_window_change_signal):
* src/emacs.c (handle_danger_signal):
* src/keyboard.c (kbd_buffer_get_event):
Don't reestablish signal handler; not needed with sigaction.
* src/blockinput.h (UNBLOCK_INPUT_TO, TOTALLY_UNBLOCK_INPUT)
(UNBLOCK_INPUT_TO):
Rework to avoid unnecessary accesses to volatile variables.
(UNBLOCK_INPUT_TO): Now a function.
(totally_unblock_input, unblock_input): New decls.
* src/data.c (handle_arith_signal, deliver_arith_signal): Move to sysdep.c
(init_data): Remove. Necessary stuff now done in init_signal.
* src/emacs.c, src/xdisp.c: Include "atimer.h", since we invoke atimer functions.
* src/emacs.c (handle_fatal_signal, deliver_fatal_signal): Move to sysdep.c.
(fatal_error_code): Remove; no longer needed.
(terminate_due_to_signal): Rename from fatal_error_backtrace, since
it doesn't always backtrace. All uses changed. No need to reset
signal to default, since sigaction and/or die does that for us now.
Use emacs_raise (FOO), not kill (getpid (), FOO).
(main): Check more-accurately whether we're dumping.
Move fatal-error setup to sysdep.c
* src/floatfns.c: Do not include "syssignal.h"; no longer needed.
* src/gtkutil.c (xg_get_file_name, xg_get_font):
Remove no-longer-needed signal-mask manipulation.
* src/keyboard.c, src/process.c (POLL_FOR_INPUT):
Don't depend on USE_ASYNC_EVENTS, a symbol that is never defined.
* src/keyboard.c (read_avail_input): Remove.
All uses replaced by gobble_input.
(Ftop_level): Use TOTALLY_UNBLOCK_INPUT rather than open code.
(kbd_buffer_store_event_hold, gobble_input):
(record_asynch_buffer_change) [USABLE_SIGIO]:
(store_user_signal_events):
No need to mess with signal mask.
(gobble_input): If blocking input and there are terminals, simply
set pending_signals to 1 and return. All hooks changed to not
worry about whether input is blocked.
(process_pending_signals): Clear pending_signals before processing
them, in case a signal comes in while we're processing.
By convention callers now test pending_signals before calling us.
(UNBLOCK_INPUT_TO, unblock_input, totally_unblock_input):
New functions, to support changes to blockinput.h.
(handle_input_available_signal): Now extern.
(reinvoke_input_signal): Remove. All uses replaced by
handle_async_input.
(quit_count): Now volatile, since a signal handler uses it.
(handle_interrupt): Now takes bool IN_SIGNAL_HANDLER as arg. All
callers changed. Block SIGINT only if not already blocked.
Clear sigmask reliably, even if Fsignal returns, which it can.
Omit unnecessary accesses to volatile var.
(quit_throw_to_read_char): No need to restore sigmask.
* src/keyboard.c (gobble_input, handle_user_signal):
* src/process.c (wait_reading_process_output):
Call signal-handling code rather than killing ourselves.
* src/lisp.h: Include <float.h>, for...
(IEEE_FLOATING_POINT): New macro, moved here to avoid duplication.
(pending_signals): Now volatile.
(syms_of_data): Now const if IEEE floating point.
(handle_input_available_signal) [USABLE_SIGIO]:
(terminate_due_to_signal, record_child_status_change): New decls.
* src/process.c (create_process): Avoid disaster if memory is exhausted
while we're processing a vfork, by tightening the critical section
around the vfork.
(send_process_frame, process_sent_to, handle_pipe_signal)
(deliver_pipe_signal): Remove. No longer needed, as Emacs now
ignores SIGPIPE.
(send_process): No need for setjmp/longjmp any more, since the
SIGPIPE stuff is now gone. Instead, report an error if errno
is EPIPE.
(record_child_status_change): Now extern. PID and W are now args.
Return void, not bool. All callers changed.
* src/sysdep.c (wait_debugging) [(BSD_SYSTEM || HPUX) && !defined (__GNU__)]:
Remove. All uses removed. This bug should be fixed now in a
different way.
(wait_for_termination_1): Use waitpid rather than sigsuspend,
and record the child status change directly. This avoids the
need to futz with the signal mask.
(process_fatal_action): Move here from emacs.c.
(emacs_sigaction_flags): New function, containing
much of what used to be in emacs_sigaction_init.
(emacs_sigaction_init): Use it. Block nonfatal system signals that are
caught by emacs, to make races less likely.
(deliver_process_signal): Rename from handle_on_main_thread.
All uses changed.
(BACKTRACE_LIMIT_MAX): Now at top level.
(thread_backtrace_buffer, threadback_backtrace_pointers):
New static vars.
(deliver_thread_signal, deliver_fatal_thread_signal):
New functions, for more-accurate delivery of thread-specific signals.
(handle_fatal_signal, deliver_fatal_signal): Move here from emacs.c.
(deliver_arith_signal): Handle in this thread, not
in the main thread, since it's triggered by this thread.
(maybe_fatal_sig): New function.
(init_signals): New arg DUMPING so that we can be more accurate
about whether we're dumping. Caller changed.
Treat thread-specific signals differently from process-general signals.
Block all signals while handling fatal error; that's safer.
xsignal from SIGFPE only on non-IEEE hosts, treating it as fatal
on IEEE hosts.
When batch, ignore SIGHUP, SIGINT, SIGTERM if they were already ignored.
Ignore SIGPIPE unless batch.
(emacs_backtrace): Output backtrace for the appropriate thread,
which is not necessarily the main thread.
* src/syssignal.h: Include <stdbool.h>.
(emacs_raise): New macro.
* src/xterm.c (x_connection_signal): Remove; no longer needed
now that we use sigaction.
(x_connection_closed): No need to mess with sigmask now.
(x_initialize): No need to reset SIGPIPE handler here, since
init_signals does this for us now.
Fixes: debbugs:12471
* configure.ac (copyright): New output variable.
(COPYRIGHT): New AC_DEFINE.
* admin/admin.el (set-copyright): No more need to set copyrights for
nextstep, or .c files. Add configure.ac and config.nt.
* lib-src/ebrowse.c (version):
* lib-src/etags.c (print_version): Use COPYRIGHT.
* nextstep/templates/Info-gnustep.plist.in:
* nextstep/templates/InfoPlist.strings.in:
* nextstep/templates/Info.plist.in: Let configure set copyright.
* nt/config.nt (COPYRIGHT): New.
* src/emacs.c: Use COPYRIGHT.
* nt/config.nt: Attempt to sync with autogen/config.in.
(HAVE_SIGSETJMP, HAVE__SETJMP): New macros.
(_longjmp, _setjmp): Remove.
* src/image.c (_setjmp) [!HAVE__SETJMP]: Restore definition, as
it's needed on POSIXish hosts that lack _setjmp. Attempt to solve
the Microsoft problem in a different way, by altering nt/config.nt.
Do not try to redefine the 'abort' function. Instead, redo
the code so that it calls 'emacs_abort' rather than 'abort'.
This removes the need for the NO_ABORT configure-time macro
and makes it easier to change the abort code to do a backtrace.
* configure.ac (NO_ABRT): Remove.
* admin/CPP-DEFINES (NO_ABORT): Remove.
* nt/inc/ms-w32.h (w32_abort) [HAVE_NTGUI]: Remove.
* src/.gdbinit: Just stop at emacs_abort, not at w32_abort or abort.
* src/emacs.c (abort) [!DOS_NT && !NO_ABORT]:
Remove; sysdep.c's emacs_abort now takes its place.
* src/lisp.h (emacs_abort): New decl. All calls from Emacs code to
'abort' changed to use 'emacs_abort'.
* src/msdos.c (dos_abort) [defined abort]: Remove; not used.
(abort) [!defined abort]: Rename to ...
(emacs_abort): ... new name.
* src/sysdep.c (emacs_abort) [!HAVE_NTGUI]: New function, taking
the place of the old 'abort' in emacs.c.
* src/w32.c, src/w32fns.c (abort): Do not #undef.
* src/w32.c (emacs_abort): Rename from w32_abort.
This change streamlines the window system selection code in
configure.in and moves many common function declarations from
window-specific headers to frame.h. It introduces a new TERM_HEADER
macro in config.h: we set this macro to the right header to use for
the window system for which we're compiling Emacs and have source
files include it indirectly. This way, we don't have to teach every
file about every window system.
* configure.ac (DIRECTORY_SEP): Move here from src/lisp.h.
* src/lisp.h (DIRECTORY_SEP): Let configure set it.
* nt/config.nt (DIRECTORY_SEP): Move here from src/lisp.h.
* lib-src/movemail.c (DIRECTORY_SEP, IS_DIRECTORY_SEP):
* lib-src/make-docfile.c (DIRECTORY_SEP, IS_DIRECTORY_SEP):
* lib-src/emacsclient.c (DIRECTORY_SEP, IS_DIRECTORY_SEP, IS_DEVICE_SEP):
Remove (they are in config.h now).
* configure.ac (GNU_LIBRARY_PENDING_OUTPUT_COUNT): Remove.
(PENDING_OUTPUT_COUNT): Absorb GNU_LIBRARY_PENDING_OUTPUT_COUNT.
(DISPNEW_NEEDS_STDIO_EXT): New define.
* src/dispnew.c (GNU_LIBRARY_PENDING_OUTPUT_COUNT, PENDING_OUTPUT_COUNT):
Let configure handle it.
(stdio_ext.h) [DISPNEW_NEEDS_STDIO_EXT]: Include it.
* nt/config.nt (GNU_LIBRARY_PENDING_OUTPUT_COUNT): Remove.
(PENDING_OUTPUT_COUNT): Define it as dispnew.c used to.
* admin/CPP-DEFINES (GNU_LIBRARY_PENDING_OUTPUT_COUNT): Remove.
src/w32.c (init_environment): Change the default values of many
environment variables in dflt_envvars[] to NULL, to avoid pushing
them into environment when they were not already defined. Remove
the code that deletes site-lisp subdirectories from the default
value of EMACSLOADPATH, as it is no longer needed.
(check_windows_init_file): Now external, not static. Use
Vload_path as is, without adding anything, as this function is now
called when Vload_path is already set up.
src/w32.h (check_windows_init_file): Add prototype.
src/emacs.c (init_cmdargs) [WINDOWSNT]: When running from the build
directory, ignore the /*/i386/ tail in Vinvocation_directory, for
compatibility with Posix platforms.
(main): Move the call to check_windows_init_file to here from
w32.c.
(decode_env_path) [WINDOWSNT]: Expand the %emacs_dir%/ prefix, if
any, in the DEFALT argument into the root of the Emacs build or
installation tree, as appropriate.
src/callproc.c (init_callproc_1): Call decode_env_path instead of
doing its equivalent by hand.
(init_callproc): Replace DOS_NT condition with MSDOS, thus letting
the code that sets Vexec_path run on MS-Windows.
src/lread.c (init_lread): Add comments to #ifdef's.
nt/paths.h (PATH_LOADSEARCH, PATH_SITELOADSEARCH, PATH_EXEC)
(PATH_DATA, PATH_DOC): Replace dummy directory names with
directories relative to %emacs_dir%.
(PATH_EXEC): Add lib-src/oo-spd/i386 and lib-src/oo/i386, to cater
to the use case of running un-installed Emacs.
(DOS_NT, MSDOS): New macros.
(WRETCODE, wait3): Remove.
* nt/inc/ms-w32.h (DOS_NT): Remove; defined in config.nt.
* lib-src/makefile.w32-in (LOCAL_FLAGS): Remove WINDOWSNT and DOS_NT,
they are always defined in config.h.
src/w32.c: Include winioctl.h and aclapi.h.
(is_symlink, chase_symlinks, enable_privilege, restore_privilege)
(revert_to_self): Forward declarations of static functions.
<static BOOL g_b_init_get_security_info>:
<g_b_init_create_symbolic_link>: New static flags.
(globals_of_w32): Initialize them to zero.
(GetSecurityInfo_Proc, CreateSymbolicLink_Proc): New typedefs.
(map_w32_filename): Improve commentary. Simplify switch.
(SYMBOLIC_LINK_FLAG_DIRECTORY): Define if not defined in system
headers (most versions of MinGW w32api don't).
(get_security_info, create_symbolic_link)
(get_file_security_desc_by_handle, is_symlink, chase_symlinks):
New functions.
(sys_access, sys_chmod): Call 'chase_symlinks' to resolve symlinks
in the argument file name.
(sys_access): Call unc_volume_file_attributes only if
GetFileAttributes fails with network-related error codes.
(sys_rename): Diagnose renaming of a symlink when the user doesn't
have the required privileges.
(get_file_security_desc_by_name): Renamed from
get_file_security_desc.
(stat_worker): New function, with most of the guts of 'stat', and
with addition of handling of symlinks and support for 'lstat'. If
possible, get file's attributes and security information by
handle, not by name. Produce S_IFLNK bit for symlinks, when
called from 'lstat'.
(stat, lstat): New functions, call 'stat_worker'.
(symlink, readlink, careadlinkat): Rewritten to create and resolve
symlinks when the underlying filesystem supports them.
lib/src/ntlib.c (lstat): New function, calls 'stat'.
nt/inc/sys/stat.h (S_IFLNK): Define.
(S_ISLNK): A non-trivial definition.
(lstat): Prototype instead of a macro that redirects to 'stat'.
lisp/files.el (file-truename): Don't skip symlink-chasing part on
windows-nt. Incorporate the resolution of 8+3 short aliases on
Windows into the loop that recursively chases symlinks. Compare
directory and its parent case-insensitively on MS-Windows and
MS-DOS.
etc/NEWS: Announce the symlink support on MS-Windows.
* nt/inc/ms-w32.h: Move here from ../src/s.
* nt/config.nt (config_opsysfile): Change to <ms-w32.h>.
* s/ms-w32.h: Move to ../nt/inc.
* src/makefile.w32-in (TAGS, TAGS-gmake, MS_W32_H):
Update for new ms-w32.h location.
* lib-src/makefile.w32-in (MS_W32_H): Update for new ms-w32.h location.
* lib/makefile.w32-in (MS_W32_H): Update for new ms-w32.h location.
* lisp/emacs-lisp/authors.el (authors-renamed-files-alist): Add ms-w32.h.
* lisp/org/ob-lilypond.el (ly-w32-ly-path): Rename from ly-win32-ly-path.
(ly-w32-pdf-path): Rename from ly-win32-pdf-path.
(ly-w32-midi-path): Rename from ly-win32-midi-path.
(ly-determine-ly-path, ly-determine-pdf-path, ly-determine-midi-path):
Check for "windows-nt", not "win32", in system-type.
* src/regex.c (MAX_BUF_SIZE): Remove some incorrect and
long-ago-commented-out code that talks about "WIN32".
* src/w32heap.h (OS_WINDOWS_95): Rename from OS_WIN95.
All uses changed.
* .bzrignore: Add lib/stdalign.h.
* config.bat: Do not set NO_DECL_ALIGN; no longer needed.
Copy lib/stdalign.in.h to lib/stdalign.in-h as needed.
* configure.ac (HAVE_ATTRIBUTE_ALIGNED): Remove the code that
fiddles with this, as gnulib now does this for us.
* admin/merge-gnulib: Add environ, stdalign.
* m4/environ.m4: New file, from gnulib.
* lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate.
* lib/stdalign.in.h, m4/stdalign.m4: New files, from gnulib.
* sed2v2.inp (HAVE_ATTRIBUTE_ALIGNED): Remove edit.
* sedlibmk.inp (STDALIGN_H, @GL_GENERATE_STDALIGN_H_TRUE@)
(GL_GENERATE_STDALIGN_H_FALSE): New edits.
* nt/config.nt (HAVE_ATTRIBUTE_ALIGNED): Remove.
* src/alloc.c (XMALLOC_BASE_ALIGNMENT, GC_POINTER_ALIGNMENT, pure_alloc):
Simplify by using alignof.
(pure_alloc) [! USE_LSB_TAG]: Don't over-align EMACS_INT values.
* src/lisp.h: Include <stdalign.h>.
(GCALIGNMENT): New macro and constant.
(DECL_ALIGN): Remove. All uses replaced by alignas (GCALIGNMENT).
(USE_LSB_TAG): ifdef on alignas, not on DECL_ALIGN.
(stdalign): New macro, if not already defined.
(GC_MARK_SECONDARY_STACK, GC_MARK_STACK, GC_SETJMP_WORKS)
(SETUP_SLAVE_PTY): New macros.
* src/s/ms-w32.h (GC_SETJMP_WORKS, GC_MARK_STACK): Set in nt/config.nt.
All Windows-specific code moved to src/s/ms-w32.h.
* src/s/ms-w32.h: Settings not specific to Windows moved to nt/config.nt.
Windows-specific code from nt/config.nt moved here.
Obsolete settings removed.
* nt/gmake.defs (DEBUG_CFLAGS): Add -fno-crossjumping.
(CHECKING_CFLAGS): Remove.
(CFLAGS, ESC_CFLAGS): Do not include $(CHECKING_CFLAGS).
* nt/nmake.defs (CHECKING_CFLAGS): Remove.
(CFLAGS, ESC_CFLAGS): Do not include $(CHECKING_CFLAGS).
without "site-lisp" in the name.
Ref http://debbugs.gnu.org/10208#25, point iii).
* configure.in (standardlisppath): New output variable.
(lisppath): Use standardlisppath.
* Makefile.in (standardlisppath): New, set by configure.
(epaths-force): Use standardlisppath and locallisppath rather than lisppath.
* src/epaths.in (PATH_SITELOADSEARCH): New.
* src/lread.c (init_lread): Use PATH_SITELOADSEARCH.
* nt/paths.h (PATH_SITELOADSEARCH): New.
Fixes: debbugs:11658
