Hi fellow monks. I have a problem with Test::Harness. It deadlocks in Test::Harness::Iterator while it is testing Pod. It happens in a lot of CPAN modules. The strange thing is, if I set the new Module in @INC and run the test directly it succeeds.

Can anyone give me insight in what might cause the deadlock?

This is a trace to HTML::Tagset 
$ cd HTML-Tagset-3.10

$ make test
/usr/bin/perl.exe "-MExtUtils::Command::MM" "-e" "test_harness(0, 'bli
+b/lib', 'blib/arch')" t/*.t
t/00_about_verbose....ok
t/01_old_junk.........ok
t/pod.................                <--- hangs

# the test succeeds without Test::Harness
$ perl -I `pwd`/blib/lib -T t/pod.t
1..1
ok 1 - blib/lib/HTML/Tagset.pm

$ PERLDB_OPTS="AutoTrace=1 NonStop=1 Frame=2" perl -MExtUtils::Command
+::MM -de
"test_harness(0, 'blib/lib', 'blib/arch')" t/*.t
...

      entering Test::Harness::Straps::_reset_file_state
       605:         my($self) = shift;
       607:         delete @{$self}{qw(max skip_all todo too_many_test
+s)};
       607:         delete @{$self}{qw(max skip_all todo too_many_test
+s)};
       608:         $self->{line}       = 0;
       609:         $self->{saw_header} = 0;
       610:         $self->{saw_bailout}= 0;
       611:         $self->{lone_not_line} = 0;
       612:         $self->{bailout_reason} = '';
       613:         $self->{'next'}       = 1;
      exited Test::Harness::Straps::_reset_file_state
      119:          $self->{file} = $name;
      120:          my %totals  = (
      121:                         max      => 0,
      122:                         seen     => 0,
      133:          $self->{totals}{$name}         = \%totals;
      134:          while( defined(my $line = $it->next) ) {
      entering Test::Harness::Iterator::FH::next
       57:          my $fh = $_[0]->{fh};
       60:          return scalar <$fh>;   <-- ultimately hangs here

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This is my current Perl ( happens also with latest perl5.8.8 delivered with cygwin. ) 
$ perl -V
Summary of my perl5 (revision 5 version 8 subversion 8) configuration:
  Platform:
    osname=cygwin, osvers=1.5.21(0.15642), archname=cygwin-thread-mult
+i
    uname='cygwin_nt-5.1 avenger 1.5.21(0.15642) 2006-07-30 14:21 i686
+ cygwin '
    config_args=''
    hint=recommended, useposix=true, d_sigaction=define
    usethreads=define use5005threads=undef useithreads=define usemulti
+plicity=de
fine
    useperlio=define d_sfio=undef uselargefiles=define usesocks=undef
    use64bitint=undef use64bitall=undef uselongdouble=undef
    usemymalloc=y, bincompat5005=undef
  Compiler:
    cc='gcc', ccflags ='-DPERL_USE_SAFE_PUTENV -fno-strict-aliasing -p
+ipe -Wdecl
aration-after-statement -DDEBUGGING',
    optimize='-O2',
    cppflags='-DPERL_USE_SAFE_PUTENV -fno-strict-aliasing -pipe -Wdecl
+aration-af
ter-statement -DDEBUGGING'
    ccversion='', gccversion='3.4.4 (cygming special) (gdc 0.12, using
+ dmd 0.125
)', gccosandvers=''
    intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=1
+2
    ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t',
+ lseeksize
=8
    alignbytes=8, prototype=define
  Linker and Libraries:
    ld='ld2', ldflags =' -L/usr/local/lib'
    libpth=/usr/local/lib /usr/lib /lib
    libs=-lgdbm -ldl -lcrypt -lgdbm_compat
    perllibs=-ldl -lcrypt -lgdbm_compat
    libc=/usr/lib/libc.a, so=dll, useshrplib=true, libperl=libperl.a
    gnulibc_version=''
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=dll, d_dlsymun=undef, ccdlflags=' '
    cccdlflags=' ', lddlflags=' -L/usr/local/lib'


Characteristics of this binary (from libperl):
  Compile-time options: DEBUGGING MULTIPLICITY MYMALLOC
                        PERL_IMPLICIT_CONTEXT PERL_USE_SAFE_PUTENV
                        USE_ITHREADS USE_LARGE_FILES USE_PERLIO
                        USE_REENTRANT_API
  Built under cygwin
  Compiled at Sep  9 2006 14:16:59

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In reply to Deadlock in Test::Harness::Iterator by codeacrobat

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