Commit Graph

95 Commits

Author SHA1 Message Date
Christopher Faylor aed6988a36 * exceptions.cc (call_signal_handler_now): Add additional guard against
inappropriately calling signal handler.
* syscalls.cc (_read): Reset errno if not exiting due to signal.
2001-09-12 05:09:24 +00:00
Christopher Faylor 101f820da2 * sigproc.h (sigframe::unregister): Return true/false whether this frame is
capable of responding to signals.
* exceptions.cc (sigframe::call_signal_handler): Don't call signal handler if
it is not armed for this thread.
2001-09-12 01:56:32 +00:00
Christopher Faylor b2bfade325 * cygheap.cc (cygheap_fixup_in_child): Don't consider a NULL bucket as a
candidate for deletion.  It is actually the end of a linked list chain.
* exceptions.cc (open_stackdumpfile): Default to "unknown" program name if
myself->progname hasn't been filled out yet.
2001-09-06 18:06:27 +00:00
Christopher Faylor d72a655937 * exceptions.cc (ctrl_c_handler): Only send SIGINT when we have a controlling
terminal and we are the head of the process group.
2001-09-05 02:42:49 +00:00
Christopher Faylor 0cc642a5f1 * syscalls.cc (setsid): Detach process from its console if the current
controlling tty is the console and already closed.
* dtable.h (class dtable): Add members to count descriptors referring to the
console.
* dtable.cc (dtable::dec_console_fds): New function to detach process from its
console.
(dtable::release): Decrement the counter of console descriptors.
(dtable::build_fhandler): Increment it.
* exception.cc (ctrl_c_handler): Send SIGTERM to myself when catch
CTRL_SHUTDOWN_EVENT.
2001-07-26 00:10:52 +00:00
Christopher Faylor 7a4078ee34 Change check_null_empty_path* to check_null_empty_str* throughout.
* path.cc (path_conv::check): Add signal protection here since retrieving info
about remote shares can take some time.
* path.h (check_null_empty_str_errno): Convert to a function prototype.
* path.cc (check_null_empty_str): Move to miscfuncs.cc.
* miscfuncs.cc (check_null_empty_str_errno): New function.
(__check_null_invalid_struct): Ditto.
(__check_null_invalid_struct_errno): Ditto.
(check_null_empty_str): Change from VirtualQuery to IsBadWritePtr.
* thread.cc (check_valid_pointer): Ditto.
* resource.cc (getrlimit): Use check_null_invalid_struct macro for checking
validity of pointer.
(setrlimit): Ditto.
2001-06-28 02:19:57 +00:00
Christopher Faylor 125205875b * exceptions.cc (interrupt_setup): Move actions from setup_handler to here.
(setup_handler): Move actions after a successful interrupt to interrupt_setup.
* fork.cc (vfork): Augment debugging output.
* sigproc.cc (proc_subproc): Ditto.
* spawn.cc (spawn_guts): Ditto.  Correctly fill out progname when spawn
NO_WAIT.  Call signal handler when a signal arrives.
* sigproc.h: Declare a function.
2001-06-24 21:57:50 +00:00
Christopher Faylor 99a5bd2fab * exceptions.cc (sig_handle_tty_stop): Reset PID_STOPPED if not actually
stopping.
* fhandler_console.cc (fhandler_console::fixup_after_fork): Don't set
controlling terminal if just inheriting a handle.
(fhandler_console::fixup_after_exec): Ditto.
* fhandler_tty.cc (fhandler_tty_slave::init): Ditto.
* signal.cc (kill_worker): Set appropriate errno if proc_exists determines that
process does not really exist.
2001-06-16 17:09:19 +00:00
Christopher Faylor 161edfaa00 * exceptions.cc (sigdelayed): Ensure that signal is cleared as the last
operation or suffer races.
* sigproc.cc (proc_subproc): Deal with zombie array overflow.
2001-06-10 16:00:23 +00:00
Christopher Faylor 52cd2f88cd * exceptions.cc (handle_exceptions): Bump repeat count for debugging kick out.
* fhandler.h (fhandler_dev_dsp): Add a fixup_after_exec.
* fhandler_dsp.cc (class Audio): Add TOT_BLOCK_SIZE to enum.
(operator new): New.
(bigwavebuffer): Declare using TOT_BLOCK_SIZE to avoid buffer overruns.
(Audio::Audio): Optimize slightly.
(fhandler_dev_dsp::open): Allocate s_audio using static buffer.
(fhandler_dev_dsp::fixup_after_exec): New function.  Ditto.
2001-05-24 05:20:17 +00:00
Christopher Faylor 5bba0cb5a3 * exceptions.cc (handle_exceptions): Don't print message when executing from a
cygwin program.
2001-05-11 05:11:12 +00:00
Christopher Faylor 792011508a * cygheap.cc (_cfree): Add regparm attribute.
(_crealloc): Ditto.
* dcrt0.cc (dll_crt0_1): Default to always checking for executable for now.
* dtable.cc (dtable::not_open): Move method.
* dtable.h (dtable): Here.
* exceptions.cc (ctrl_c_handler): Don't expect process group leader to handle a
signal if it doesn't exist.
* fhandler.h (fhandler_base): Make openflags protected.
* localtime.c (tzsetwall): Check for __CYGWIN__ as well as __WIN32__.
* path.cc (path_conv::check): Add some comments.  Change strcat to assignment.
* lib/_cygwin_S_IEXEC.cc (_cygwin_bob__): Eliminate.
* fhandler_tty.cc (fhandler_console::dup): Set controlling terminal if
necessary.
* fhandler_tty.cc (fhandler_tty_slave::dup): Ditto.
2001-05-08 15:16:49 +00:00
Christopher Faylor 11ba5ef4d1 * exceptions.cc (handle_exceptions): Vastly increase test for exception loop
guard variable.
2001-05-05 05:07:20 +00:00
Christopher Faylor f598d941a8 * exceptions.cc (stack_info): Add some controls.
(stack_info::init): Add extra arguments to control method of initialization..
If we have a known good frame, set things up so that this frame is not skipped
the first time through.  Record whether caller cares about arguments or not.
(stack_info::walk): Don't store arguments if they're unwanted.
(stackdump): Add isexception parameter for use when called by exception
handler.
(cygwin_stackdump): Accomodate extra argument to stackdump.
(handle_exceptions): Ditto.
(sig_handle): Ditto.
(interrupt_on_return): Accomodate extra arguments to stack walk initialization.
2001-05-05 02:44:36 +00:00
Christopher Faylor 63b61cd19f Revert much of previous erroneous checkin. Add ChangeLog entry.
* pinfo.h: Correctly set __SIGOFFSET.
* path.cc (hash_path_name): Avoid calling library functions for simple copying
of characters.
* shortcut.c: Use WIN32_LEAN_AND_MEAN.
* smallprint.c: Ditto.
* environ.cc (getwinenv): Minor clarity fix.
* localtime.c: No need to include windows.h
* string.h: New file.
2001-05-04 21:02:15 +00:00
Christopher Faylor 17743fbc49 * exceptions.cc (ctrl_c_handler): Always send signal to process if it has no
tty.
2001-05-04 20:39:38 +00:00
Christopher Faylor 70c7f359b1 * exceptions.cc (handle_exceptions): Break out of "loop" if the debugger
doesn't seem to be attaching to our process.
2001-05-03 15:00:38 +00:00
Christopher Faylor 8abeff1ead * exceptions.cc (INIT_EXCEPTION_HANDLER): Eliminate.
(init_exceptions): Just use init_exception_handler.
(open_stackdumpfile): New function.
(stack_info::first_time): Eliminate.
(stack_info::init): Set up fields to avoid "first_time" consideration.
(stack_info::walk): Remove "first_time" consideration.
(stackdump): Change arguments to accept initial frame pointer and open stack
file flag.
(stack): Eliminate.
(cygwin_stackdump): Use stackdump() rather than stack().
(try_to_debug): Remove all synchronization logic.  Just keep looping in
exception handler until debugger notices us.  Return 1 if successfully started
debugger.
(handle_exceptions): Just return if we know that we're debugging.  Reorganize
to avoid creating a stackdump file if we are starting a debugger.  Return from
exception handler if debugger started successfully.
(sig_handle): Create a stackdump only if debugger wasn't started.
* winsup.h (try_to_debug): Add an argument.
2001-04-30 03:09:19 +00:00
Christopher Faylor b98ebf5470 Throughout, change 'tty_attached' to 'real_tty_attached', for clarity.
Throughout, change 'OutputStopped' to 'output_stopped', for consistency.
* dtable.cc (stdio_init): Set controlling tty if not set by stdio opens.
* exceptions.cc (ctrl_c_handler): Avoid special pgid checking if no tty is
associated with the process.
(Suggested by Tim Baker <dbaker@direct.ca>)
* external.cc (fillout_pinfo): Return actual tty number for ctty.
* fhandler_console.cc (get_tty_stuff): Set ctty when shared memory is
allocated.  Accept flags input from open().
(set_console_ctty): New function.
(fhandler_console::open): Pass flags to get_tty_stuff and rely on this function
to set the ctty, if appropriate.
* fhandler_termios.cc (fhandler_termios::set_ctty): Move to tty_min class.
* fhandler_tty.cc (fhandler_tty_slave::open): Use tc field to access
set_ctty().
* tty.h (TTY_CONSOLE): Move to include/sys/cygwin.h.
(tty_min): Add set_ctty class here.
* include/sys/cygwin.h (TTY_CONSOLE): New home here.
* path.cc (symlink_info): Make contents an actual buffer.  Pass more flags to
case_check.
(path_conv::check): Reorganize to do parsing based on posix path rather than
native path.
(symlink_info::check): Expect posix path as input.  Translate to native path
here.  Accept path_conv flags.  Stop parsing if not a symlink regardless of
whether previous path was a symlink.
2001-04-28 23:48:28 +00:00
Christopher Faylor cba63823f8 * thread.cc (thread_init_wrapper): Use _REENT_INIT to initialize the reent
structure of newlib.
* sigproc.h (sig_send): Add exception parameter to sig_send.
* sigproc.cc (sig_send): Ditto.  Use it when setting frame info.
* exceptions.cc (handle_exceptions): Use exception flag when calling sig_send.
2001-04-27 18:50:59 +00:00
Christopher Faylor 968d91b2e6 * sigproc.h [sigthread]: Add exception field.
[sigframe::~sigframe]: Clear exception field.
[sigframe::set]: Set exception field from caller.
* sigproc.cc (sig_send): Set exception field when frame pointer is passed in.
* exceptions.cc (interrupt_on_return): Always treat exception as interruptible.
2001-04-25 19:11:37 +00:00
Christopher Faylor aa970c616c * Makefile.in: Put -lgcc last in list of libraries, since stdc++ library needs
it.
* cygwin.din: Remove obsolete "__empty" export.
* exceptions.cc (call_signal_handler_now): Force inclusion of function even
when -finline-functions is specified.
* sigproc.h: Remove obsolete call_signal_handler declaration.
* fhandler_console.cc (cp_get_internal): New function.
(cp_convert): New function.
(con_to_str): New function.
(str_to_con): New function.
(fhandler_console::read): Replace OemToCharBuff with con_to_str.
(fhandler_console::write_normal): Replace CharToOemBuff with str_to_con.
2001-04-09 00:44:25 +00:00
Christopher Faylor 1ba3935dfb * exceptions.cc (sigframe::call_signal_handler): Return value of
call_signal_handler_now.
* sigproc.h (sigframe): Use constructor.
* syscalls.cc (_read): Correct errno test prior to calling signal handler.
2001-04-02 00:18:29 +00:00
Christopher Faylor 2a1743c76d * exceptions.cc (sigframe::call_signal_handler): Move out side of "C" block or
some compilers will complain.
2001-04-01 05:38:08 +00:00
Christopher Faylor 11f3a79b64 * exceptions.cc (call_signal_handler_now): Rename from call_signal_handler to
avoid C++ confusion.
2001-04-01 05:24:20 +00:00
Christopher Faylor f611148366 * sigproc.h (class sigframe): Implement 'unregister()' method.
(sigframe::~sigframe): Use unregister method.
(sigframe::call_signal_handler): Declare new method.
* exceptions.cc (sigframe::call_signal_handler): New method.  Unregisters
current sigframe before calling signal handler.
(setup_handler): Clear waiting threads prior to arming signal_arrived.
* syscalls.cc (_read): Change goto to loop.  Recalculate sigframe inside of
loop so that constructor is called when appropriate.
* wait.cc (wait4): Ditto.
* signal.cc: Change "sig" to "signal" in debugging messages throughout.
* sigproc.cc: Ditto.
2001-04-01 00:06:17 +00:00
Christopher Faylor a1299ba54b * dtable.cc: Guard against new winsock.h/winsock2.h warnings when mixing
winsock*.h and sys/types.h.
* fhandler_socket.cc: Ditto.
* net.cc: Ditto.
* select.cc: Ditto.
* exceptions.cc: Remove unneeded define.
2001-03-20 19:50:28 +00:00
Christopher Faylor b8c8fa1786 * exceptions.cc (interruptible): Update debugging output.
(setup_handler): Ensure that wait_sig loop wakes up when we punt on sending a
signal.
* poll.cc (poll): Add signal guard here.
2001-03-19 22:48:26 +00:00
Christopher Faylor 2116a17508 * autoload.cc (noload): Use proper method for multiline strings or newer gcc's
complain.
* exceptions.cc (unused_sig_wrapper): Ditto.
* fhandler.h (fhandler_base): Make get_io_handle and friends return self.
* fhandler_tty.cc (fhandler_pty_common::close_on_exec): Accomodate DEBUGGING
flag to avoid spurious warnings when inheritance is set.
2001-03-11 01:58:23 +00:00
Christopher Faylor 7cf3b655ec * shortcut.c (PATH_ALL_EXEC): Add parentheses to avoid a compiler warning.
* exceptions.cc (setup_handler): Clarify debugging message.
* sigproc.cc (proc_subproc): Remove PROC_CHILDSTOPPED test.  It is handled by
normal PROC_CLEARWAIT case.
(wait_sig): Eliminate "dispatched" tracking.  Remove __SIGCHILDSTOPPED test.
Decrement counter again before jumping out of InterlockedDecrement loop so that
subsequent InterlockedIncrement will keep the counter at the correctly
decremented value and also detect when there are pending signals.
* sigproc.h: Remove __SIGCHILDSTOPPED element.
(procstuff): Remove PROC_CHILDSTOPPED element.
2001-03-10 23:37:50 +00:00
Christopher Faylor efd76e4140 * sigproc.h (sigthread): Declare new methods. Create new winapi_lock field.
(sigframe:;set): Call get_winapi_lock after frame is set so that signal handler
thread knows not to call SuspendThread.
(sigframe::~sigframe): Release winapi_lock.
* exceptions.cc (sigthread::get_winapi_lock): New method.
(sigthread::release_winapi_lock): New method.
(setup_handler): Use get_winapi_lock to ensure that signalled thread is not
blocked in a Windows API.
* path.h (path_types): Avoid broken GCC warning.
2001-03-07 06:19:34 +00:00
Christopher Faylor 903c330dbe * exceptions.cc (sig_handle_tty_stop): Ignore attempts to suspend a process if
started by non-cygwin parent.
2001-03-02 02:09:40 +00:00
Christopher Faylor 2a6fc028ba Throughout, change 'cygwin_shared.mount' to 'mount_table'.
* child_info.h (child_info): Move shared_h, console_h to cygheap.  Add mount_h.
* cygheap.h (init_cygheap): Add shared_h, console_h.
* cygheap.cc (init_cheap): Initialize heap at a fixed location after the shared
memory regions.  Initialize cygheap->user name here.
* dcrt0.cc (dll_crt0_1): Call getpagesize () to initialize constants.  Remove
cygheap_init since it is done in shared_init now.
(_dll_crt0): Initialize mount_h, remove shared_h and console_h initialization.
* fhandler_console.cc (console_shared_h): Eliminate.
(get_tty_stuff): Use cygheap->console_h rather than console_shared_h.
* heap.cc (heap_init): Use page size constant calculated earlier in
initialization.
* shared.cc: Eliminate cygwin_shared_h.  Add cygwin_mount_h.
(mount_table_init): New function for initializing a user mount table.
(open_shared_file_map): Use constant for shared memory region.  Initialize
cygheap and mount table here.
(open_shared): Improve debugging output.
(shared_info::initialize): Eliminate call to mount.init.
(shared_terminate): Use cygheap->shared_h.  Close cygwin_mount_h.
(open_shared_file_map): Eliminate.
* shared_info.h (mount_info): Add a version field.
(shared_align_past): New macro for calculating location for shared memory
regions.
* sigproc.cc (init_child_info): Eliminate shared_h, console_h.
* spawn.cc (spawn_guts): Pass on cygwin_mount_h iff not a different user.
* syscalls.cc (system_info): New global holding system memory defaults.
(getpagesize): Use system_info.
* uinfo.cc (internal_getlogin): Only fill in user name if nonexistent.
* winsup.h: Declare system_info.
* passwd.cc (read_etc_passwd): Use cygheap->user.name () rather than retrieving
the name again.
2001-01-28 05:51:15 +00:00
Christopher Faylor 0826bed5c1 Fix typos. Add some comments. 2001-01-27 03:02:15 +00:00
Christopher Faylor 206a8d884b * exceptions.cc (sigreturn): Call any pending signals prior to resetting the
signal mask so that stacked signals behave correctly.
(sigdelayed): Avoid a race where a signal could end up calling an incorrect
signal handler if two signals come in close together.
2001-01-27 02:23:46 +00:00
Christopher Faylor a7cde2b98a * autoload.cc (LoadDLLinitfunc): Remove debugging statement.
* exceptions.cc (sig_handle_tty_stop): Move setting of PID_STOPPED to earlier
in interrupt.
((interrupt_setup): i.e., here.
(sig_handle): Don't queue multiple SIGSTOPS.
* fhandler.h (bg_check_types): Enumerate return value of bg_check for clarity.
* signal.cc (kill_pgrp): Minor cleanup.
* fhandler_termios.cc (fhandler_termios::bg_check): Use enumerated type for
function return.  Don't raise signal if a signal is already queued.
* fhandler_console.cc (fhandler_console::read): Use enumerated return type for
bg_check.
* select.cc: Ditto, throughout.
* read.cc: Ditto, throughout.
* termios.cc: Ditto, throughout.
(_read): YA interrupt detect simplification.
* wait.cc (wait4): Ditto.
2001-01-17 14:57:09 +00:00
Christopher Faylor c3d62298ba * debug.h: Add regparm attributes to some functions.
* signal.cc (sigaction): Don't treat SIGCONT specially.
* exceptions.cc (interrupt_setup): Save sa_flags of interrupted signal for
later use.
(sig_handler): Default any stopping signal to SIGSTOP.
(call_signal_handler): New function.
(sigdelayed0): New function.
* sigproc.cc (sigproc_init): Initialize SIGSTOP sigaction for special behavior.
* sigproc.h: Define call_signal_handler.
* syscalls.cc (_read): Allow restartable signal behavior.
2001-01-12 05:38:25 +00:00
Christopher Faylor 077ec4cb37 * pinfo.cc (codepage_init): Move function.
* environ.cc (codepage_init): To here.
* exceptoins.cc (SIG_NONMASKABLE): Remove SIGCONT from consideration since it
is supposed to be maskable.
* signal.cc (sigaction): Ditto.
* sigproc.cc (wait_sig): Ditto.
* winsup.h: Eliminate global declaration of codepage_init.
2001-01-08 04:02:02 +00:00
Corinna Vinschen 8a93913d26 * cygwin.din: Add symbols for `getrlimit' and `setrlimit'.
* exceptions.cc (stackdump): Avoid creating stackdump when
        `rlim_core' is 0.
        * resource.cc: New global variable `rlim_core'.
        (getrlimit): New function.
        (setrlimit): Ditto.
        include/cygwin/version.h: Bump minor API version to 32 due to
        adding `getrlimit' and `setrlimit'.
        include/sys/resource.h: Add defines, types and prototypes for
        `getrlimit' and `setrlimit'.
2000-12-27 00:13:57 +00:00
Christopher Faylor 2803e941b3 * autoload.h: Make DLL initializers global to avoid inlining.
* exceptions.cc (interrupt_setup): Reorganize arguments to allow use of
regparm.
(interrupt_now): Ditto.
(interrupt_on_return): Ditto.
(call_handler): Ditto.
2000-12-26 03:21:05 +00:00
Christopher Faylor 7d72d04c77 * exceptions.cc (reset_signal_arrived): Make global to avoid inlining. 2000-12-20 06:03:16 +00:00
Christopher Faylor 2bfdcd8a5f * fhandler_serial.cc (fhandler_serial::raw_read): Always find number of bytes
ready to be read whether overlapped_armed or not.
2000-12-20 05:57:59 +00:00
Christopher Faylor 0d675c5d7f * sigproc.cc (wait_sig): Remove unneeded for loop iteration.
* exceptions.cc (interrupt_setup): Don't set signal mask here or races occur
with main thread.  Set it in sigdelayed instead.
(sigreturn): Reflect change in stack order of ebp and flags.
(sigdelayed): Set stack frame correctly.  Call set_process_mask here with flags
for last trapped signal.
(signal_dispatch): Add newmask.
* sigproc.cc (wait_sig): Eliminate ill-considered attempt to halt looping
signal processors.
2000-11-16 05:16:59 +00:00
Christopher Faylor 84aeff4126 Throughout use myself->ppid_handle rather than parent_alive.
* child_info.h (child_info): Eliminate parent_alive.
* dcrt0.cc (dll_crt0_1): Call fork_init for debugging pid creation.
* fork.cc (fork_child): Reflect change to fixup_mmaps_after_fork arguments.
(slow_pid_reuse): New function to grab last 'n' pids to prevent pid reuse.
(fork_parent): Move last_fork_proc into slow_pid_reuse.  Handle fork_pids
debugging.  Eliminate unnecessary call to set_child_mmap_ptr.
(fork_init): New debugging function.
* mmap.cc (fixup_mmaps_after_fork): Renamed from recreate_mmaps_after_fork.
Rely on copied data after a fork.
(set_child_mmap_ptr): Eliminate.
* pinfo.h (_pinfo): Eliminate parent_alive, mmap_ptr and reflect above changes.
* spawn.cc (spawn_guts): Eliminate vestiges of "old way" of sending new hProc
to parent process.
2000-11-15 06:27:48 +00:00
Christopher Faylor 70a11195b9 * path.cc (get_device_number): Allow /dev/ttySn to designate a com port. 2000-11-13 04:06:41 +00:00
Christopher Faylor c0188ae7cb * dcrt0.cc (sigthread::init): Reinstitute sigthread lock as a critical section.
(dll_crt0_1): Move sigthread lock initialization to earlier in startup.
* exceptions.cc (interrupt_on_return): Remove previous kludgy attempt to detect
an invalid frame.
(call_handler): Eliminate inner for loop.  Grab signal critical section lock
where appropriate.
* sigproc.cc (proc_subproc): Restore uid setting.
* sigproc.h (sigthread): Reinstitute sigthread lock as a critical section.
(sigframe): Grab the sigthread lock before clearing frame to avoid having the
signal thread use an invalid frame.
2000-11-06 23:12:05 +00:00
Christopher Faylor dd11f11fae * child_info.h (child_info): Add pppid_handle for closing the parent's of the
parent handle.
* dcrt0.cc (_dll_crt0): Close parent's parent handle when spawned or forked.
* debug.cc (add_handle): Correct erroneous reference to handle structure when
printing warning.
* exceptions.cc (interrupt_now): Always return 1.
(interrupt_on_return): Accept a sigthread argument.  Check to see if this
argument has been trashed prior to setting up the stack return.
(call_handler): Add a loop around attempts to dispatch signals to detect case
where interrupt_on_return fails.
(_sigdelayed): Set up a temporary frame pointer prior to calling stuff that
could trigger an interrupt or the stack walking code will be very confused.
* fork.cc (fork_parent): Move a lot of the setup of the child process into
proc_subproc.
* spawn.cc (spawn_guts): Ditto.  Use ppid_handle to contact logical parent when
reparenting.
* pinfo.h (_pinfo): Remember the logical handle of the parent process.
* sigproc.cc (proc_subproc): Record most stuff necessary for the _pinfo
structure that is inferrable from myself when adding children.
(wait_sig): Always set 'pending_signals' flag when about to kick off the signal
scanning loop.  Reset it only if there are no pending signals.
2000-11-06 06:36:32 +00:00
Christopher Faylor 7edb836a68 * exceptions.cc (handle_sigsuspend): Record frame here for signalling.
(set_process_mask): Ditto.
2000-11-05 03:08:39 +00:00
Christopher Faylor e2fa502354 * exceptions.cc (interruptible): Remove obsolete tests.
(sigreturn): Construct pseudo-frame-pointer so that signal handler can figure
out where to put return address when signals are coming in quickly.
* path.cc (cwdstuff::get): Allow length 0 buffer length when buffer when NULL.
2000-11-02 02:15:02 +00:00
Christopher Faylor cffaf20bf3 * exceptions.cc (sig_handle): Just make sure that wait_sig loops when receiving
a SIGCONT.  Don't block waiting for completion that will never occur.
2000-10-25 17:57:43 +00:00