'for' loop loops over fields of empty structure array
Carsten Clark
tantumquantum+gnuoctave at gmail.com
Sun Mar 22 11:22:58 CDT 2009
Bug report for Octave 3.0.1 configured for i686-pc-cygwin
Description:
-----------
* Given a struct array, 'for' normally executes once for each
struct in the array. However, given an empty struct array,
'for' loops over the fields of the struct. I would expect
the loop not to execute in this case (that's what MATLAB
does, anyway).
Repeat-By:
---------
$ octave -qf
octave:1> reports(1) = struct ( 'range', 0, 'bearing', 0 );
octave:2> reports(2) = struct ( 'range', 0, 'bearing', 0 );
octave:3> mask = logical ( [0 0] );
octave:4> rm = reports(mask);
octave:5> for r = rm, r, end
r = {}(0x0)
r = {}(0x0)
octave:6> rm
rm =
{
0x0 struct array containing the fields:
bearing
range
}
Fix:
---
* I don't know of a fix. If this has been fixed in subsequent
versions, sorry for the trouble -- I couldn't find a list online
of what has been fixed since 3.0.1.
Configuration (please do not edit this section):
-----------------------------------------------
uname output: CYGWIN_NT-5.1 sony 1.5.25(0.156/4/2) 2008-06-12
19:34 i686 Cygwin
configure opts:
'--srcdir=/pub/cygports/octave/octave-3.0.1-1/src/octave-3.0.1'
'--prefix=/usr' '--exec-prefix=/usr' '--bindir=/usr/bin'
'--sbindir=/usr/sbin' '--libexecdir=/usr/sbin' '--localstatedir=/var'
'--sysconfdir=/etc' '--datarootdir=/usr/share'
'--docdir=/usr/share/doc/octave-3.0.1' 'CFLAGS=-Dtimezone=_timezone'
'CPPFLAGS=-I/usr/include/hdf5' 'LDFLAGS=' 'CXXFLAGS=-O2 -pipe '
Fortran compiler: g77
FFLAGS: -O -mieee-fp
F2C: @F2C@
F2CFLAGS: @F2CFLAGS@
FLIBS: -L/bin/../lib/gcc/i686-pc-cygwin/3.4.4
-L/bin/../lib/gcc -L/usr/lib/gcc/i686-pc-cygwin/3.4.4
-L/bin/../lib/gcc/i686-pc-cygwin/3.4.4/../../..
-L/usr/lib/gcc/i686-pc-cygwin/3.4.4/../../.. -lhdf5 -lz -lm -lfrtbegin
-lg2c -lcygwin -luser32 -lkernel32 -ladvapi32 -lshell32
CPPFLAGS: -I/usr/include/hdf5
INCFLAGS: -I.
-I/pub/cygports/octave/octave-3.0.1-1/src/octave-3.0.1 -I.
-I./liboctave -I./src -I./libcruft/misc
-I/pub/cygports/octave/octave-3.0.1-1/src/octave-3.0.1
-I/pub/cygports/octave/octave-3.0.1-1/src/octave-3.0.1/liboctave
-I/pub/cygports/octave/octave-3.0.1-1/src/octave-3.0.1/src
-I/pub/cygports/octave/octave-3.0.1-1/src/octave-3.0.1/libcruft/misc
C compiler: gcc, version 3.4.4 (cygming special, gdc 0.12, using
dmd 0.125)
CFLAGS: -Dtimezone=_timezone
CPICFLAG:
C++ compiler: g++, version 3.4.4
CXXFLAGS: -O2 -pipe
CXXPICFLAG:
LD_CXX: g++
LDFLAGS:
LIBFLAGS: -L.
RLD_FLAG:
BLAS_LIBS: -llapack -lblas
FFTW_LIBS: -lfftw3
LIBS: -lreadline -lncurses -ldl -lwsock32 -lhdf5 -lz -lm -lwsock32
LEXLIB:
LIBGLOB:
SED: /bin/sed
DEFS:
-DPACKAGE_NAME="" -DPACKAGE_TARNAME="" -DPACKAGE_VERSION=""
-DPACKAGE_STRING="" -DPACKAGE_BUGREPORT="" -DOCTAVE_SOURCE=1
-D_GNU_SOURCE=1 -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1
-DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1
-DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1
-DHAVE_UNISTD_H=1 -DSEPCHAR=':' -DSEPCHAR_STR=":" -D__NO_MATH_INLINES=1
-DCXX_NEW_FRIEND_TEMPLATE_DECL=1 -DCXX_ISO_COMPLIANT_LIBRARY=1
-DCXX_BROKEN_REINTERPRET_CAST=1 -DCXX_ABI=gnu_v3 -DHAVE_LIBM=1
-DHAVE_QHULL=1 -DHAVE_PCRE=1 -DHAVE_REGEXEC=1 -DHAVE_REGEX=1
-DHAVE_ZLIB_H=1 -DHAVE_ZLIB=1 -DHAVE_HDF5_H=1 -DHAVE_HDF5=1
-DHAVE_H5GGET_NUM_OBJS=1 -DHAVE_FFTW3=1 -DHAVE_GLPK_H=1 -DHAVE_GLPK=1
-DHAVE_CURL_CURL_H=1 -DHAVE_CURL=1 -DHAVE_IEEE754_DATA_FORMAT=1
-DF77_FUNC(name,NAME)=name ## _ -DF77_FUNC_(name,NAME)=name ## __
-DHAVE_BLAS=1 -DHAVE_SUITESPARSE_UMFPACK_H=1 -DHAVE_UMFPACK=1
-DUMFPACK_SEPARATE_SPLIT=1 -DHAVE_SUITESPARSE_COLAMD_H=1
-DHAVE_COLAMD=1 -DHAVE_SUITESPARSE_CCOLAMD_H=1 -DHAVE_CCOLAMD=1
-DHAVE_SUITESPARSE_CHOLMOD_H=1 -DHAVE_CHOLMOD=1 -DHAVE_SUITESPARSE_CS_H=1
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-DHAVE_PWD_H=1 -DHAVE_STDINT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1
-DHAVE_SYS_IOCTL_H=1 -DHAVE_SYS_PARAM_H=1 -DHAVE_SYS_POLL_H=1
-DHAVE_SYS_RESOURCE_H=1 -DHAVE_SYS_SELECT_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_SYS_UTIME_H=1 -DHAVE_TERMCAP_H=1
-DHAVE_UNISTD_H=1 -DHAVE_UTIME_H=1 -DHAVE_SSTREAM=1 -DHAVE_TERMIO_H=1
-DHAVE_GLOB_H=1 -DHAVE_FNMATCH_H=1 -DHAVE_FNMATCH=1 -DHAVE_GLOB=1
-DHAVE_ATEXIT=1 -DHAVE_BASENAME=1 -DHAVE_BCOPY=1 -DHAVE_BZERO=1
-DHAVE_CHMOD=1 -DHAVE_DUP2=1 -DHAVE_ENDGRENT=1 -DHAVE_ENDPWENT=1
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-DHAVE_GETEGID=1 -DHAVE_GETEUID=1 -DHAVE_GETGID=1 -DHAVE_GETGRENT=1
-DHAVE_GETGRGID=1 -DHAVE_GETGRNAM=1 -DHAVE_GETPGRP=1 -DHAVE_GETPID=1
-DHAVE_GETPPID=1 -DHAVE_GETPWENT=1 -DHAVE_GETPWUID=1 -DHAVE_GETTIMEOFDAY=1
-DHAVE_GETUID=1 -DHAVE_GETWD=1 -DHAVE_KILL=1 -DHAVE_LGAMMA=1 -DHAVE_LINK=1
-DHAVE_LOCALTIME_R=1 -DHAVE_LSTAT=1 -DHAVE_MEMMOVE=1 -DHAVE_MKDIR=1
-DHAVE_MKFIFO=1 -DHAVE_MKSTEMP=1 -DHAVE_ON_EXIT=1 -DHAVE_PIPE=1
-DHAVE_POLL=1 -DHAVE_PUTENV=1 -DHAVE_RAISE=1 -DHAVE_READLINK=1
-DHAVE_REALPATH=1 -DHAVE_RENAME=1 -DHAVE_RINDEX=1 -DHAVE_RMDIR=1
-DHAVE_ROUND=1 -DHAVE_SELECT=1 -DHAVE_SETGRENT=1 -DHAVE_SETLOCALE=1
-DHAVE_SETPWENT=1 -DHAVE_SETVBUF=1 -DHAVE_SIGACTION=1 -DHAVE_SIGPENDING=1
-DHAVE_SIGPROCMASK=1 -DHAVE_SIGSUSPEND=1 -DHAVE_SNPRINTF=1
-DHAVE_STAT=1 -DHAVE_STRCASECMP=1 -DHAVE_STRDUP=1 -DHAVE_STRERROR=1
-DHAVE_STRNCASECMP=1 -DHAVE_STRPTIME=1 -DHAVE_STRSIGNAL=1 -DHAVE_SYMLINK=1
-DHAVE_TEMPNAM=1 -DHAVE_TGAMMA=1 -DHAVE_UMASK=1 -DHAVE_UNAME=1
-DHAVE_UNLINK=1 -DHAVE_USLEEP=1 -DHAVE_UTIME=1 -DHAVE_VFPRINTF=1
-DHAVE_VSPRINTF=1 -DHAVE_VSNPRINTF=1 -DHAVE_WAITPID=1 -DHAVE__CHMOD=1
-DHAVE__SNPRINTF=1 -DHAVE_STRFTIME=1 -DOCTAVE_HAVE_BROKEN_STRPTIME=1
-DHAVE_LIBDL=1 -DHAVE_DLOPEN=1 -DHAVE_DLSYM=1 -DHAVE_DLERROR=1
-DHAVE_DLCLOSE=1 -DHAVE_DLOPEN_API=1 -DENABLE_DYNAMIC_LINKING=1
-DHAVE_TIMEVAL=1 -DHAVE_FINITE=1 -DHAVE_ISNAN=1 -DHAVE_ISINF=1
-DHAVE_COPYSIGN=1 -DHAVE__FINITE=1 -DHAVE__ISNAN=1 -DHAVE__COPYSIGN=1
-DHAVE_DECL_SIGNBIT=1 -DHAVE_ACOSH=1 -DHAVE_ASINH=1 -DHAVE_ATANH=1
-DHAVE_ERF=1 -DHAVE_ERFC=1 -DHAVE_EXP2=1 -DHAVE_STRUCT_STAT_ST_BLKSIZE=1
-DHAVE_STRUCT_STAT_ST_BLOCKS=1 -DHAVE_STRUCT_STAT_ST_RDEV=1
-DHAVE_DECL_TZNAME=1 -DHAVE_TZNAME=1 -DUSE_READLINE=1
-DEXCEPTION_IN_MATH=1 -DRETSIGTYPE=void -DHAVE_DECL_SYS_SIGLIST=0
-DHAVE_POSIX_SIGNALS=1 -DRETSIGTYPE_IS_VOID=1 -DHAVE_GETRUSAGE=1
-DHAVE_TIMES=1 -DRUSAGE_TIMES_ONLY=1 -DYYTEXT_POINTER=1
-DGNUPLOT_BINARY="gnuplot"
User-preferences (please do not edit this section):
--------------------------------------------------
EDITOR = emacs
EXEC_PATH = /usr/sbin/octave/3.0.1/site/exec/i686-pc-cygwin:/usr/sbin/octave/api-v32/site/exec/i686-pc-cygwin:/usr/sbin/octave/site/exec/i686-pc-cygwin:/usr/sbin/octave/3.0.1/exec/i686-pc-cygwin:/usr/bin:/cygdrive/c/users/carsten/bin:/usr/local/bin:/usr/bin:/bin:/usr/X11R6/bin:/cygdrive/c/WINDOWS/system32:/cygdrive/c/WINDOWS:/cygdrive/c/WINDOWS/system32/wbem:/cygdrive/c/program
files/perforce:/cygdrive/c/Program
Files/MATLAB/R2007b/bin:/cygdrive/c/Program
Files/MATLAB/R2007b/bin/win32:/cygdrive/c/Program
Files/Intel/WiFi/bin/:/cygdrive/c/Program
Files/QuickTime/QTSystem/:/usr/lib/lapack
IMAGE_PATH = .:/usr/share/octave/3.0.1/imagelib
PAGER = less
PS1 = \s:\#>
PS2 = >
PS4 = +
beep_on_error = 0
completion_append_char =
crash_dumps_octave_core = 1
echo_executing_commands = 0
fixed_point_format = 0
gnuplot_binary = gnuplot
gnuplot_command_end =
gnuplot_command_plot = pl
gnuplot_command_replot = rep
gnuplot_command_splot = sp
gnuplot_command_title = t
gnuplot_command_using = u
gnuplot_command_with = w
history_file = /cygdrive/c/users/carsten/.octave_hist
history_size = 1024
ignore_function_time_stamp = system
info_file = /usr/share/info/octave.info
info_program = info
makeinfo_program = makeinfo
max_recursion_depth = 256
output_max_field_width = 5
output_precision = 5
page_output_immediately = 0
page_screen_output = 1
print_answer_id_name = 1
print_empty_dimensions = 1
save_precision = 16
saving_history = 1
sighup_dumps_octave_core = 1
sigterm_dumps_octave_core = 1
silent_functions = 0
split_long_rows = 1
string_fill_char =
struct_levels_to_print = 2
suppress_verbose_help_message = 0
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