I can confirm this behavior, though I hardly use the pdl shell so I have
not investigated it. I get this behavior on Ubuntu (and Mac, I believe, but
I'm on Ubuntu right now) under the old-school PDL shell.

David

On Mon, Nov 14, 2011 at 2:32 PM, Derek Lamb <[email protected]> wrote:

> In pdl2 it works just fine.  Here's an example that has nothing to do with
> any PDL module, only the PDL shell being used.  In the perldl shell, when I
> try to print to an unopened file handle, I get no error, but when I do the
> same thing in the pdl2 shell it gives me an appropriate error.  I guess one
> workaround would be to abandon the perldl shell on this machine, but it's
> worked just fine for so many years, and works just fine on other
> platforms...  I'm so confused.
>
> cheers,
> Derek
>
> ###use perldl shell
> $ perl -Mblib perldl
> perlDL shell v1.354_001
> <snip>
> Loaded PDL v2.4.9_010 (supports bad values)
> pdl> print STDOUT "here is a stdout message\n";
> here is a stdout message
>
> pdl> print STDERR "here is a stderr message\n";
> here is a stderr message
>
> pdl> print ASDF "here is a asdf message\n";
>
> pdl> exit
>
> ### use pdl2 shell
> $ perl -Mblib blib/script/pdl2
> Use of qw(...) as parentheses is deprecated at
> /Users/derek/Build/PDL/blib/lib/PDL/Perldl2/Script.pm line 28.
> Use of qw(...) as parentheses is deprecated at
> /Users/derek/Build/PDL/blib/lib/PDL/Perldl2/Script.pm line 38.
> Perldl2 Shell v0.005
> <snip>
> Loaded PDL v2.4.9_010
>
> load_rcfile: got $HOME = /Users/derek
> load_rcfile: loading /Users/derek/.perldlrc
> pdl> print STDOUT "here is a stdout message\n";
> here is a stdout message
>
> pdl> print STDERR "here is a stderr message\n";
> here is a stderr message
>
> pdl> print ASDF "here is a asdf message\n";
> print() on unopened filehandle ASDF at (eval 367) line 5, <DATA> line 387.
>
> pdl> exit
>
>
> On Nov 12, 2011, at 12:13 AM, chm wrote:
>
> > I just tried the example in pdl2 and perldl for
> > cygwin and strawberry perl on winXP and was unable
> > to reproduce the problem.  Maybe someone else will
> > have better luck.  If you run pdl2, do you get the
> > same problem?  (If you don't have Devel::REPL installed
> > then pdl2 should fall back to perldl).
> >
> > --Chris
> >
> > On 11/11/2011 7:40 PM, Derek Lamb wrote:
> >> I'm resurrecting this old email, because I think a similar problem
> >> I'm having is related, and am looking for more ways to dig into it.
> >>
> >> In the perldl shell, PDL::AutoLoader doesn't complain (as I expect it
> >> to) if it can't find a file to autoload.  In particular if I do the
> >> following: ---------- pdl>  $PDL::verbose=1 pdl>  $PDL::debug=1 pdl>
> >> asdf() AutoLoader: Expanding directories from .:.:+~/pdl:+./pdl...
> >> AutoLoader: returning  .,.,/Users/derek/pdl,<snip a whole bunch of
> >> directories>, Loading asdf.pdl ...I am here and $s is PDL AutoLoader:
> >> Undefined subroutine asdf() cannot be autoloaded. ----------- Where I
> >> have inserted a statement
> >>
> >> print "I am here and \$s is $s\n"
> >>
> >> to line 208 of Basic/AutoLoader.pm, right before the line
> >>
> >> die $s."\tNo file `$func.pdl' was found in your \@PDLLIB path.\n";
> >>
> >> It seems like the call to perl's die is getting executed, because a
> >> print statement inserted after the die call does not get executed.
> >>
> >> If I run the same thing as a one-liner I get the appropriate error:
> >> -------- $ perl -MPDL::AutoLoader -e 'asdf();' PDL AutoLoader:
> >> Undefined subroutine asdf() cannot be autoloaded. No file `asdf.pdl'
> >> was found in your @PDLLIB path. --------
> >>
> >> ***And if I run perldl in the debugger, I also get the desired
> >> error***
> >>
> >> ------- $ perl -d perldl __DB<1>  n ##then press enter until it gets
> >> to the addhistory line around perldl:252 DB<2>  use PDL::AutoLoader
> >>
> >> DB<3>  asdf() PDL AutoLoader:  Undefined subroutine asdf() cannot be
> >> autoloaded. No file `asdf.pdl' was found in your @PDLLIB path.
> >> -------
> >>
> >> So it's not like AutoLoader is inherently broken, but rather
> >> something about running perldl _NOT_ in the debugger is causing calls
> >> to perl's die() to not print their messages. I'm running a much
> >> simpler Perl installation now, since I accidentally wiped my whole
> >> perl tree last weekend.  So now the only PDL installed is 2.4.9_010.
> >> And experiments with different ReadLine modules (Perl, Gnu) that
> >> Chris suggested did not seem to help any.  I don't see any
> >> $SIG{__DIE__} definitions in perldl, but there are some elsewhere in
> >> the PDL source tree, but nothing looked likely to me.
> >>
> >> Any other ideas?
> >>
> >> cheers, Derek
> >>
> >>
> >> On Aug 5, 2011, at 8:03 AM, Chris Marshall wrote:
> >>
> >>> Hi Derek-
> >>>
> >>> I cannot reproduce the problem with PDL-2.4.9 for either the
> >>> one-liner, pdl2, or perldl.  All report the mismatch error.  Two
> >>> thoughts come to mind:
> >>>
> >>> (1) Try using the perl readline for your shell (assuming you are
> >>> using GNU readline by default.  Maybe the error is there but being
> >>> "lost" somehow, e.g.:
> >>>
> >>> PERL_RL=Perl perldl
> >>>
> >>> (2) It is possible that you have some contamination between the
> >>> 2.4.7 PDL install and any others on your system.  Sometimes it is
> >>> difficult to isolate everything. The only sure way would probably
> >>> be a complete, separate perl install and all modules for the 2.4.7
> >>> stuff.
> >>>
> >>> Are the two systems you need to be bug-for-bug compatible on the
> >>> same OS, hardware, perl, ...? If not, it might be difficult to be
> >>> fully "compatible".
> >>>
> >>> Cheers, Chris
> >>>
> >>> On Thu, Aug 4, 2011 at 4:47 PM, Derek Lamb<[email protected]>
> >>> wrote:
> >>>> If I run this one-liner on the command-line, I get the expected
> >>>> warning:
> >>>>
> >>>> $ perl -MPDL -e 'print ones(2,4)+zeroes(5,7);' PDL:
> >>>> PDL::Ops::plus(a,b,c): Parameter 'b' PDL: Mismatched implicit
> >>>> thread dimension 0: should be 2, is 5
> >>>>
> >>>> Caught at file -e, line 1, pkg main
> >>>>
> >>>>
> >>>> If I run it in the pdl2 shell, I get the warning.  But if I run
> >>>> the same thing in the perldl shell, I get no warning at all--it
> >>>> looks like a successful command unless I try to assign that to a
> >>>> variable and find out later that the variable doesn't exist.
> >>>> This happens for PDL 2.4.7 as well as the current git
> >>>> (2.4.9_004).  I do get the warning in the perldl shell on a Linux
> >>>> machine running 2.4.9_002.  So it makes me think there is a funny
> >>>> interaction between the components of my current setup.  perldl
> >>>> -V output is pasted below.  FWIW I'm still running PDL 2.4.7
> >>>> because for now I need to be bug-for-bug compatible with another
> >>>> machine in a production environment.  Has anybody else seen
> >>>> something like this, or have any ideas?
> >>>>
> >>>> Derek
> >>>>
> >>>> ----------
> >>>>
> >>>> $ perldl -V perlDL shell v1.354 PDL comes with ABSOLUTELY NO
> >>>> WARRANTY. For details, see the file 'COPYING' in the PDL
> >>>> distribution. This is free software and you are welcome to
> >>>> redistribute it under certain conditions, see the same file for
> >>>> details.
> >>>>
> >>>> Summary of my PDL configuration
> >>>>
> >>>> VERSION: PDL v2.4.7 (supports bad values)
> >>>>
> >>>> $%PDL::Config = { 'BADVAL_PER_PDL' =>  '0', 'WITH_PROJ' =>  '1',
> >>>> 'FFTW_TYPE' =>  'double', 'FFTW_LIBS' =>  [ '/opt/local/lib' ],
> >>>> 'WITH_FFTW' =>  '1', 'GSL_LIBS' =>  undef, 'GL_BUILD' =>  '0',
> >>>> 'WITH_IO_BROWSER' =>  '0', 'PROJ_INC' =>  [ '/opt/local/include'
> >>>> ], 'WHERE_PLPLOT_INCLUDE' =>
> >>>> '/Users/derek/local/include/plplot', 'WITH_KARMA' =>  '0',
> >>>> 'WHERE_KARMA' =>  undef, 'HTML_DOCS' =>  '1',
> >>>> 'SKIP_KNOWN_PROBLEMS' =>  '0', 'WHERE_PLPLOT_LIBS' =>
> >>>> '/Users/derek/local/lib', 'WITH_3D' =>  '1', 'WITH_POSIX_THREADS'
> >>>> =>  '0', 'FFTW_INC' =>  [ '/opt/local/include' ], 'POGL_VERSION'
> >>>> =>  '0.63', 'HIDE_TRYLINK' =>  '1', 'HDF_INC' =>  [
> >>>> '/opt/local/include' ], 'WITH_HDF' =>  '1', 'POGL_WINDOW_TYPE' =>
> >>>> 'glut', 'WITH_GD' =>  '1', 'WITH_BADVAL' =>  '1', 'FITS_LEGACY'
> >>>> =>  '1', 'WITH_SLATEC' =>  '1', 'BADVAL_USENAN' =>  '0',
> >>>> 'WITH_DEVEL_REPL' =>  '1', 'TEMPDIR' =>
> >>>> '/var/folders/cp/cpF7SuTpEJqtly5xlloAak+++TI/-Tmp-', 'PROJ_LIBS'
> >>>> =>  [ '/opt/local/lib' ], 'USE_POGL' =>  '1', 'GD_LIBS' =>  [
> >>>> '/opt/local/lib' ], 'GSL_INC' =>  undef, 'GD_INC' =>  [
> >>>> '/opt/local/include' ], 'OPTIMIZE' =>  '-g', 'WITH_GSL' =>  '1',
> >>>> 'HDF_LIBS' =>  [ '/opt/local/lib' ], 'MALLOCDBG' =>  {},
> >>>> 'WITH_PLPLOT' =>  '0', 'WITH_MINUIT' =>  '1', 'MINUIT_LIB' =>
> >>>> undef }; Summary of my perl5 (revision 5 version 14 subversion 1)
> >>>> configuration:
> >>>>
> >>>> Platform: osname=darwin, osvers=10.7.0,
> >>>> archname=darwin-multi-2level uname='darwin turul 10.7.0 darwin
> >>>> kernel version 10.7.0: sat jan 29 15:17:16 pst 2011;
> >>>> root:xnu-1504.9.37~1release_i386 i386 ' config_args='-D
> >>>> inc_version_list=5.14.0/darwin-multi-2level 5.14.0 -des
> >>>> -Dprefix=/opt/local -Dscriptdir=/opt/local/bin
> >>>> -Dcppflags=-I/opt/local/include -Dccflags=-pipe -O2 -arch x86_64
> >>>> -Dldflags=-L/opt/local/lib -arch x86_64 -Dvendorprefix=/opt/local
> >>>> -Dusemultiplicity=y -D cc=/usr/bin/gcc-4.2 -D ld=/usr/bin/gcc-4.2
> >>>> -D man1ext=1pm -D man3ext=3pm -D
> >>>> man1dir=/opt/local/share/man/man1p -D
> >>>> man3dir=/opt/local/share/man/man3p -D
> >>>> siteman1dir=/opt/local/share/man/man1 -D
> >>>> siteman3dir=/opt/local/share/man/man3 -D
> >>>> vendorman1dir=/opt/local/share/man/man1 -D
> >>>> vendorman3dir=/opt/local/share/man/man3 -D pager=/usr/bin/less
> >>>> -sR' hint=recommended, useposix=true, d_sigaction=define
> >>>> useithreads=undef, usemultiplicity=define useperlio=define,
> >>>> d_sfio=undef, uselargefiles=define, usesocks=undef
> >>>> use64bitint=define, use64bitall=define, uselongdouble=undef
> >>>> usemymalloc=n, bincompat5005=undef Compiler:
> >>>> cc='/usr/bin/gcc-4.2', ccflags ='-pipe -O2 -arch x86_64
> >>>> -fno-common -DPERL_DARWIN -I/opt/local/include -no-cpp-precomp
> >>>> -fno-strict-aliasing -fstack-protector -I/opt/local/include',
> >>>> optimize='-O3', cppflags='-I/opt/local/include -no-cpp-precomp
> >>>> -pipe -O2 -arch x86_64 -fno-common -DPERL_DARWIN
> >>>> -I/opt/local/include -no-cpp-precomp -fno-strict-aliasing
> >>>> -fstack-protector -I/opt/local/include' ccversion='',
> >>>> gccversion='4.2.1 (Apple Inc. build 5666) (dot 3)',
> >>>> gccosandvers='' intsize=4, longsize=8, ptrsize=8, doublesize=8,
> >>>> byteorder=12345678 d_longlong=define, longlongsize=8,
> >>>> d_longdbl=define, longdblsize=16 ivtype='long', ivsize=8,
> >>>> nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8
> >>>> alignbytes=8, prototype=define Linker and Libraries: ld='env
> >>>> MACOSX_DEPLOYMENT_TARGET=10.6 /usr/bin/gcc-4.2', ldflags
> >>>> ='-L/opt/local/lib -arch x86_64 -fstack-protector'
> >>>> libpth=/opt/local/lib /usr/lib libs=-lgdbm -ldbm -ldl -lm -lutil
> >>>> -lc perllibs=-ldl -lm -lutil -lc libc=, so=dylib,
> >>>> useshrplib=false, libperl=libperl.a gnulibc_version='' Dynamic
> >>>> Linking: dlsrc=dl_dlopen.xs, dlext=bundle, d_dlsymun=undef,
> >>>> ccdlflags=' ' cccdlflags=' ', lddlflags='-L/opt/local/lib -arch
> >>>> x86_64 -bundle -undefined dynamic_lookup -fstack-protector'
> >>>> -----------
> >>>>
> >>>>
> >>>> _______________________________________________ Perldl mailing
> >>>> list [email protected]
> >>>> http://mailman.jach.hawaii.edu/mailman/listinfo/perldl
> >
>
>
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