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[john]

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Subject: Octave from Recent CVS: Segmentation fault

Bug report for Octave 2.1.31 configured for %OCTAVE_CANONICAL_HOST_TYPE%
(CVS 9 December 2000)

Description:
-----------

The following not at all useful code causes a Segmentation fault:

arrow2 [544] octave
GNU Octave, version 2.1.31 (i586-pc-linux-gnulibc1).
Copyright (C) 1996, 1997, 1998, 1999, 2000 John W. Eaton.
This is free software with ABSOLUTELY NO WARRANTY.
For details, type `warranty'.

*** This is a development version of Octave.  Development releases
*** are provided for people who want to help test, debug, and improve
*** Octave.
***
*** If you want a stable, well-tested version of Octave, you should be
*** using one of the stable releases (when this development release
*** was made, the latest stable version was 2.0.16).

INFO_FILE = /usr/local/info/octave.info
octave:1> xx = linspace(-3,10)';
octave:2> xx / (pi+xx)
panic: Segmentation fault -- stopping myself...
attempting to save variables to `octave-core'...
save to `octave-core' complete
Segmentation fault

Fix
---

Not yet known...

Configuration (please do not edit this section):
-----------------------------------------------

uname output:     Linux arrows 2.0.36 #1 Sat Nov 20 20:52:52 GMT 1999 i586
configure opts:   --prefix=/part2/gcc/install-3
Fortran compiler: g77
FFLAGS:           -O
F2C:              
F2CFLAGS:         
FLIBS:            -lg2c -lm 
-L/part2/gcc/install-3/lib/gcc-lib/i586-pc-linux-gnulibc1/2.95.2 
-L/part2/gcc/install-3/i586-pc-linux-gnulibc1/lib -L/part2/gcc/install-3/lib -lm
CPPFLAGS:         
INCFLAGS:         -I. -I../octave -I. -I./liboctave -I./src -I./libcruft/misc 
-I../octave -I../octave/liboctave -I../octave/src -I../octave/libcruft/misc  
-I../octave/glob -I./glob
C compiler:       gcc, version 2.95.2 19991024 (release)
CFLAGS:           -g -O2 -Wall
CPICFLAG:         -fPIC
C++ compiler:     c++, version 2.95.2 19991024 (release)
CXXFLAGS:         -g -O2 -Wall
CXXPICFLAG:       -fPIC
LDFLAGS:          -g
LIBFLAGS:         -L.
RLD_FLAG:         -Xlinker -rpath -Xlinker 
/part2/gcc/install-3/lib/octave-2.1.31
TERMLIBS:         -lncurses
LIBS:             -ldl -lz -lm 
LEXLIB:           
LIBPLPLOT:        
LIBDLFCN:         
LIBGLOB:          ./glob/glob.o ./glob/fnmatch.o
DEFS:

  -DOCTAVE_SOURCE=1 -DSEPCHAR=':' -DSEPCHAR_STR=":" -DUSE_READLINE=1
  -D__NO_MATH_INLINES=1 -DCXX_NEW_FRIEND_TEMPLATE_DECL=1 -DHAVE_LIBM=1
  -DHAVE_LIBZ=1 -DF77_APPEND_UNDERSCORE=1 -DSIZEOF_SHORT=2 -DSIZEOF_INT=4
  -DSIZEOF_LONG=4 -DSIZEOF_LONG_LONG=8 -DHAVE_ALLOCA_H=1 -DHAVE_ALLOCA=1
  -DNPOS=std::string::npos -DSTDC_HEADERS=1 -DHAVE_DIRENT_H=1
  -DTIME_WITH_SYS_TIME=1 -DHAVE_SYS_WAIT_H=1 -DHAVE_ASSERT_H=1
  -DHAVE_CURSES_H=1 -DHAVE_DLFCN_H=1 -DHAVE_FCNTL_H=1 -DHAVE_FLOAT_H=1
  -DHAVE_FNMATCH_H=1 -DHAVE_GLOB_H=1 -DHAVE_GRP_H=1 -DHAVE_LIMITS_H=1
  -DHAVE_MEMORY_H=1 -DHAVE_NAN_H=1 -DHAVE_PWD_H=1 -DHAVE_STDLIB_H=1
  -DHAVE_STRING_H=1 -DHAVE_SYS_IOCTL_H=1 -DHAVE_SYS_PARAM_H=1
  -DHAVE_SYS_RESOURCE_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_SYS_TIME_H=1
  -DHAVE_SYS_TIMES_H=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_UTSNAME_H=1
  -DHAVE_TERMCAP_H=1 -DHAVE_TERMIO_H=1 -DHAVE_UNISTD_H=1
  -DHAVE_VARARGS_H=1 -DHAVE_ATEXIT=1 -DHAVE_BCOPY=1 -DHAVE_BZERO=1
  -DHAVE_DUP2=1 -DHAVE_ENDGRENT=1 -DHAVE_ENDPWENT=1 -DHAVE_EXECVP=1
  -DHAVE_FCNTL=1 -DHAVE_FORK=1 -DHAVE_GETCWD=1 -DHAVE_GETEGID=1
  -DHAVE_GETEUID=1 -DHAVE_GETGID=1 -DHAVE_GETGRENT=1 -DHAVE_GETGRGID=1
  -DHAVE_GETGRNAM=1 -DHAVE_GETHOSTNAME=1 -DHAVE_GETPGRP=1 -DHAVE_GETPID=1
  -DHAVE_GETPPID=1 -DHAVE_GETPWENT=1 -DHAVE_GETPWNAM=1 -DHAVE_GETPWUID=1
  -DHAVE_GETTIMEOFDAY=1 -DHAVE_GETUID=1 -DHAVE_GETWD=1 -DHAVE_LINK=1
  -DHAVE_LOCALTIME_R=1 -DHAVE_LSTAT=1 -DHAVE_MEMMOVE=1 -DHAVE_MKDIR=1
  -DHAVE_MKFIFO=1 -DHAVE_ON_EXIT=1 -DHAVE_PIPE=1 -DHAVE_PUTENV=1
  -DHAVE_READLINK=1 -DHAVE_RENAME=1 -DHAVE_RINDEX=1 -DHAVE_RMDIR=1
  -DHAVE_SELECT=1 -DHAVE_SETGRENT=1 -DHAVE_SETPWENT=1 -DHAVE_SETVBUF=1
  -DHAVE_SIGACTION=1 -DHAVE_SIGPENDING=1 -DHAVE_SIGPROCMASK=1
  -DHAVE_SIGSUSPEND=1 -DHAVE_STAT=1 -DHAVE_STRCASECMP=1 -DHAVE_STRDUP=1
  -DHAVE_STRERROR=1 -DHAVE_STRFTIME=1 -DHAVE_STRNCASECMP=1 -DHAVE_STRPTIME=1
  -DHAVE_SYMLINK=1 -DHAVE_TEMPNAM=1 -DHAVE_UMASK=1 -DHAVE_UNLINK=1
  -DHAVE_USLEEP=1 -DHAVE_VFPRINTF=1 -DHAVE_VSPRINTF=1 -DHAVE_VSNPRINTF=1
  -DHAVE_WAITPID=1 -DHAVE_LIBDL=1 -DHAVE_DLOPEN=1 -DHAVE_DLSYM=1
  -DHAVE_DLERROR=1 -DHAVE_DLCLOSE=1 -DWITH_DL=1 -DWITH_DYNAMIC_LINKING=1
  -DHAVE_TIMEVAL=1 -DHAVE_FINITE=1 -DHAVE_ISNAN=1 -DHAVE_ISINF=1
  -DHAVE_ACOSH=1 -DHAVE_ASINH=1 -DHAVE_ATANH=1 -DHAVE_ERF=1 -DHAVE_ERFC=1
  -DHAVE_ST_BLKSIZE=1 -DHAVE_ST_BLOCKS=1 -DHAVE_ST_RDEV=1 -DHAVE_TZNAME=1
  -DHAVE_GR_PASSWD=1 -DRETSIGTYPE=void -DSYS_SIGLIST_DECLARED=1
  -DHAVE_SYS_SIGLIST=1 -DHAVE_POSIX_SIGNALS=1 -DHAVE_GETRUSAGE=1
  -DHAVE_TIMES=1 -DGNUPLOT_HAS_MULTIPLOT=1 -DGNUPLOT_HAS_FRAMES=1

User-preferences (please do not edit this section):
--------------------------------------------------

  EDITOR = "emacs"
  EXEC_PATH = 
":/part2/gcc/install-3/bin:/usr/local/bin:/bin:/usr/bin:/usr/texmf/bin:/usr/bin/X11:/usr/net/bin:/usr/games/bin:/home/john/mach4/bin:/usr/local/pgsql/bin/:.:/home/john/brlcad/linux/usr/brlcad/bin:/usr/local/samba/bin"
  IMAGEPATH = ".:/part2/gcc/install-3/share/octave/2.1.31/imagelib//"
  INFO_FILE = "/usr/local/info/octave.info"
  INFO_PROGRAM = "info"
  LOADPATH = ":"
  PAGER = "less -e"
  PS1 = "\\s:\\#> "
  PS2 = "> "
  PS4 = "+ "
  automatic_replot = 0
  beep_on_error = 0
  completion_append_char = " "
  default_eval_print_flag = 1
# default_global_variable_value = <no value or error in displaying it>
  default_return_value = []
  default_save_format = "ascii"
  define_all_return_values = 0
  do_fortran_indexing = 0
  echo_executing_commands = 0
  empty_list_elements_ok = "warn"
  fixed_point_format = 0
  gnuplot_binary = "gnuplot"
  gnuplot_command_end = "\n"
  gnuplot_command_plot = "pl"
  gnuplot_command_replot = "rep"
  gnuplot_command_splot = "sp"
  gnuplot_command_title = "t"
  gnuplot_command_using = "u"
  gnuplot_command_with = "w"
  gnuplot_has_frames = 1
  gnuplot_has_multiplot = 1
  history_file = "/home/john/.octave_hist"
  history_size = 1024
  ignore_function_time_stamp = "system"
  implicit_num_to_str_ok = 0
  implicit_str_to_num_ok = 0
  initialize_global_variables = 0
  max_recursion_depth = 256
  ok_to_lose_imaginary_part = "warn"
  output_max_field_width = 10
  output_precision = 5
  page_output_immediately = 0
  page_screen_output = 1
  prefer_column_vectors = 1
  print_answer_id_name = 1
  print_empty_dimensions = 1
  print_rhs_assign_val = 0
  propagate_empty_matrices = 1
  resize_on_range_error = 1
  return_last_computed_value = 0
  save_precision = 15
  saving_history = 1
  silent_functions = 0
  split_long_rows = 1
  string_fill_char = " "
  struct_levels_to_print = 2
  suppress_verbose_help_message = 0
  treat_neg_dim_as_zero = 0
  warn_assign_as_truth_value = 1
  warn_divide_by_zero = 1
  warn_function_name_clash = 1
  warn_future_time_stamp = 1
  warn_missing_semicolon = 0
  warn_variable_switch_label = 0
  whitespace_in_literal_matrix =