From @sisyphus

Hi,

Attached is the (abridged) output of running 'gmake test' for 5.27.7 on
Windows.
It's essentially the same for both 32-bit and 64-bit builds, and there was
no such problem with version 5.27.6.

In a nutshell, the command 'perl.exe harness', when run from the win32/t
folder launches into the normal running of the test scripts for 5.27.6.
But for 5.27.7, for each and every test script, the same command just
outputs​:

'1' is not recognized as an internal or external command,
operable program or batch file.
<scriptname>.t ........................................................
No subtests run

which is counted as a fail​:

<scriptname>.t (Wstat​: 0 Tests​: 0 Failed​: 0)
Parse errors​: No plan found in TAP output

Here is the 'perl -V' of the build that produced the attached t.txt​:

Summary of my perl5 (revision 5 version 27 subversion 7) configuration​:

  Platform​:
  osname=MSWin32
  osvers=6.1.7601
  archname=MSWin32-x86-multi-thread-64int
  uname=''
  config_args='undef'
  hint=recommended
  useposix=true
  d_sigaction=undef
  useithreads=define
  usemultiplicity=define
  use64bitint=define
  use64bitall=undef
  uselongdouble=undef
  usemymalloc=n
  default_inc_excludes_dot=define
  bincompat5005=undef
  Compiler​:
  cc='gcc'
  ccflags
=' -s -O2 -DWIN32 -DPERL_TEXTMODE_SCRIPTS -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS
-DUSE_PERLIO -D__USE_MINGW_ANSI_STDIO -fwrapv -fno-strict-aliasing -mms-bitfields'
  optimize='-s -O2'
  cppflags='-DWIN32'
  ccversion=''
  gccversion='7.2.0'
  gccosandvers=''
  intsize=4
  longsize=4
  ptrsize=4
  doublesize=8
  byteorder=12345678
  doublekind=3
  d_longlong=define
  longlongsize=8
  d_longdbl=define
  longdblsize=12
  longdblkind=3
  ivtype='long long'
  ivsize=8
  nvtype='double'
  nvsize=8
  Off_t='long long'
  lseeksize=8
  alignbytes=8
  prototype=define
  Linker and Libraries​:
  ld='g++'
  ldflags ='-s -L"c​:\perl\lib\CORE" -L"C​:\_32\gcc-mingw-720\mingw32\lib"'
  libpth=C​:\_32\gcc-mingw-720\mingw32\lib
  libs= -lmoldname -lkernel32 -luser32 -lgdi32 -lwinspool -lcomdlg32 -ladvapi32
-lshell32 -lole32 -loleaut32 -lnetapi32 -luuid -lws2_32 -lmpr -lwinmm -lversion
-lodbc32 -lodbccp32 -lcomctl32
  perllibs= -lmoldname -lkernel32 -luser32 -lgdi32 -lwinspool -lcomdlg32 -ladvapi32
-lshell32 -lole32 -loleaut32 -lnetapi32 -luuid -lws2_32 -lmpr -lwinmm -lversion
-lodbc32 -lodbccp32 -lcomctl32
  libc=
  so=dll
  useshrplib=true
  libperl=libperl527.a
  gnulibc_version=''
  Dynamic Linking​:
  dlsrc=dl_win32.xs
  dlext=dll
  d_dlsymun=undef
  ccdlflags=' '
  cccdlflags=' '
  lddlflags='-mdll -s -L"c​:\perl\lib\CORE" -L"C​:\_32\gcc-mingw-720\mingw32\lib"'

Characteristics of this binary (from libperl)​:
  Compile-time options​:
  HAS_TIMES
  HAVE_INTERP_INTERN
  MULTIPLICITY
  PERLIO_LAYERS
  PERL_COPY_ON_WRITE
  PERL_DONT_CREATE_GVSV
  PERL_IMPLICIT_CONTEXT
  PERL_IMPLICIT_SYS
  PERL_MALLOC_WRAP
  PERL_OP_PARENT
  PERL_PRESERVE_IVUV
  USE_64_BIT_INT
  USE_ITHREADS
  USE_LARGE_FILES
  USE_LOCALE
  USE_LOCALE_COLLATE
  USE_LOCALE_CTYPE
  USE_LOCALE_NUMERIC
  USE_LOCALE_TIME
  USE_PERLIO
  USE_PERL_ATOF
  Built under MSWin32
  Compiled at Dec 21 2017 13​:50​:06
  @​INC​:
  C​:/_32/comp/perl-5.27.7/lib

From @sisyphus

# CCTYPE=GCC
# GCCBIN=gcc
# GCCVER=7.2.0
# GCCTARGET=i686-w64-mingw32
# GCCCROSS=
# WIN64=undef
# ARCHITECTURE=x86
# ARCHNAME=MSWin32-x86-multi-thread-64int
# MAKE=gmake
..\miniperl.exe -I..\lib ..\mkppport
ppport.h in cpan/DB_File is up-to-date
ppport.h in cpan/IPC-SysV is up-to-date
ppport.h in cpan/Scalar-List-Utils is up-to-date
ppport.h in cpan/Win32API-File is up-to-date
ppport.h in dist/PathTools is up-to-date
ppport.h in dist/Time-HiRes is up-to-date
..\miniperl.exe -I..\lib ..\make_ext.pl
"MAKE=gmake" --dir=..\cpan --dir=..\dist --dir=..\ext --dynamic
!Unicode/Normalize
Skipping extension Unicode/Normalize, not ported to current platform at
..\make_ext.pl line 184.
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/dist/PathTools'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- Cwd.bs
..\..\lib\auto\Cwd\Cwd.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/dist/PathTools'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/ext/B'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- B.bs
..\..\lib\auto\B\B.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/ext/B'
gmake[1]​: Entering directory
'C​:/_32/comp/perl-5.27.7/cpan/Compress-Raw-Bzip2'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- Bzip2.bs
..\..\lib\auto\Compress\Raw\Bzip2\Bzip2.bs 644
gmake[1]​: Leaving directory
'C​:/_32/comp/perl-5.27.7/cpan/Compress-Raw-Bzip2'
gmake[1]​: Entering directory
'C​:/_32/comp/perl-5.27.7/cpan/Compress-Raw-Zlib'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- Zlib.bs
..\..\lib\auto\Compress\Raw\Zlib\Zlib.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/Compress-Raw-Zlib'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/dist/Data-Dumper'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- Dumper.bs
..\..\lib\auto\Data\Dumper\Dumper.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/dist/Data-Dumper'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/dist/Devel-PPPort'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- PPPort.bs
..\..\lib\auto\Devel\PPPort\PPPort.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/dist/Devel-PPPort'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/ext/Devel-Peek'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- Peek.bs
..\..\lib\auto\Devel\Peek\Peek.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/ext/Devel-Peek'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/Digest-MD5'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- MD5.bs
..\..\lib\auto\Digest\MD5\MD5.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/Digest-MD5'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/Digest-SHA'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- SHA.bs
..\..\lib\auto\Digest\SHA\SHA.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/Digest-SHA'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/Encode'
gmake[2]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/Encode/Byte'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- Byte.bs
..\..\..\lib\auto\Encode\Byte\Byte.bs 644
gmake[2]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/Encode/Byte'
gmake[2]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/Encode/CN'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- CN.bs
..\..\..\lib\auto\Encode\CN\CN.bs 644
gmake[2]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/Encode/CN'
gmake[2]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/Encode/EBCDIC'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- EBCDIC.bs
..\..\..\lib\auto\Encode\EBCDIC\EBCDIC.bs 644
gmake[2]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/Encode/EBCDIC'
gmake[2]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/Encode/JP'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- JP.bs
..\..\..\lib\auto\Encode\JP\JP.bs 644
gmake[2]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/Encode/JP'
gmake[2]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/Encode/KR'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- KR.bs
..\..\..\lib\auto\Encode\KR\KR.bs 644
gmake[2]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/Encode/KR'
gmake[2]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/Encode/Symbol'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- Symbol.bs
..\..\..\lib\auto\Encode\Symbol\Symbol.bs 644
gmake[2]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/Encode/Symbol'
gmake[2]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/Encode/TW'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- TW.bs
..\..\..\lib\auto\Encode\TW\TW.bs 644
gmake[2]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/Encode/TW'
gmake[2]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/Encode/Unicode'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- Unicode.bs
..\..\..\lib\auto\Encode\Unicode\Unicode.bs 644
gmake[2]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/Encode/Unicode'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- Encode.bs
..\..\lib\auto\Encode\Encode.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/Encode'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/ext/Fcntl'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- Fcntl.bs
..\..\lib\auto\Fcntl\Fcntl.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/ext/Fcntl'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/ext/File-DosGlob'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- DosGlob.bs
..\..\lib\auto\File\DosGlob\DosGlob.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/ext/File-DosGlob'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/ext/File-Glob'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- Glob.bs
..\..\lib\auto\File\Glob\Glob.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/ext/File-Glob'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/Filter-Util-Call'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- Call.bs
..\..\lib\auto\Filter\Util\Call\Call.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/Filter-Util-Call'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/ext/Hash-Util'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- Util.bs
..\..\lib\auto\Hash\Util\Util.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/ext/Hash-Util'
gmake[1]​: Entering directory
'C​:/_32/comp/perl-5.27.7/ext/Hash-Util-FieldHash'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- FieldHash.bs
..\..\lib\auto\Hash\Util\FieldHash\FieldHash.bs 644
gmake[1]​: Leaving directory
'C​:/_32/comp/perl-5.27.7/ext/Hash-Util-FieldHash'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/dist/IO'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- IO.bs
..\..\lib\auto\IO\IO.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/dist/IO'
gmake[1]​: Entering directory
'C​:/_32/comp/perl-5.27.7/cpan/Scalar-List-Utils'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- Util.bs
..\..\lib\auto\List\Util\Util.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/Scalar-List-Utils'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/MIME-Base64'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- Base64.bs
..\..\lib\auto\MIME\Base64\Base64.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/MIME-Base64'
gmake[1]​: Entering directory
'C​:/_32/comp/perl-5.27.7/cpan/Math-BigInt-FastCalc'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- FastCalc.bs
..\..\lib\auto\Math\BigInt\FastCalc\FastCalc.bs 644
gmake[1]​: Leaving directory
'C​:/_32/comp/perl-5.27.7/cpan/Math-BigInt-FastCalc'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/ext/Opcode'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- Opcode.bs
..\..\lib\auto\Opcode\Opcode.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/ext/Opcode'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/ext/POSIX'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- POSIX.bs
..\..\lib\auto\POSIX\POSIX.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/ext/POSIX'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/ext/PerlIO-encoding'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- encoding.bs
..\..\lib\auto\PerlIO\encoding\encoding.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/ext/PerlIO-encoding'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/ext/PerlIO-mmap'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- mmap.bs
..\..\lib\auto\PerlIO\mmap\mmap.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/ext/PerlIO-mmap'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/ext/PerlIO-scalar'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- scalar.bs
..\..\lib\auto\PerlIO\scalar\scalar.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/ext/PerlIO-scalar'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/ext/PerlIO-via'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- via.bs
..\..\lib\auto\PerlIO\via\via.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/ext/PerlIO-via'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/ext/SDBM_File'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- SDBM_File.bs
..\..\lib\auto\SDBM_File\SDBM_File.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/ext/SDBM_File'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/Socket'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- Socket.bs
..\..\lib\auto\Socket\Socket.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/Socket'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/dist/Storable'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- Storable.bs
..\..\lib\auto\Storable\Storable.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/dist/Storable'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/ext/Sys-Hostname'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- Hostname.bs
..\..\lib\auto\Sys\Hostname\Hostname.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/ext/Sys-Hostname'
gmake[1]​: Entering directory
'C​:/_32/comp/perl-5.27.7/ext/Tie-Hash-NamedCapture'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- NamedCapture.bs
..\..\lib\auto\Tie\Hash\NamedCapture\NamedCapture.bs 644
gmake[1]​: Leaving directory
'C​:/_32/comp/perl-5.27.7/ext/Tie-Hash-NamedCapture'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/dist/Time-HiRes'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- HiRes.bs
..\..\lib\auto\Time\HiRes\HiRes.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/dist/Time-HiRes'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/Time-Piece'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- Piece.bs
..\..\lib\auto\Time\Piece\Piece.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/Time-Piece'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/Unicode-Collate'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- Collate.bs
..\..\lib\auto\Unicode\Collate\Collate.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/Unicode-Collate'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/Win32'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- Win32.bs
..\..\lib\auto\Win32\Win32.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/Win32'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/Win32API-File'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- File.bs
..\..\lib\auto\Win32API\File\File.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/Win32API-File'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/ext/XS-APItest'
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/ext/XS-APItest'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/ext/XS-Typemap'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- Typemap.bs
..\..\lib\auto\XS\Typemap\Typemap.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/ext/XS-Typemap'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/ext/arybase'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- arybase.bs
..\..\lib\auto\arybase\arybase.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/ext/arybase'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/ext/attributes'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- attributes.bs
..\..\lib\auto\attributes\attributes.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/ext/attributes'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/ext/mro'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- mro.bs
..\..\lib\auto\mro\mro.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/ext/mro'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/ext/re'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- re.bs
..\..\lib\auto\re\re.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/ext/re'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/dist/threads'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- threads.bs
..\..\lib\auto\threads\threads.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/dist/threads'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/dist/threads-shared'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- shared.bs
..\..\lib\auto\threads\shared\shared.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/dist/threads-shared'
..\miniperl.exe -I..\lib ..\make_ext.pl
"MAKE=gmake" --dir=..\cpan --dir=..\dist --dir=..\ext --static
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/ext/Win32CORE'
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/ext/Win32CORE'
..\miniperl.exe -I..\lib list_static_libs.pl > Extensions_static
g++ -mdll -o
..\perl527.dll -s -L"c​:\perl\lib\CORE" -L"C​:\_32\gcc-mingw-720\mingw32\lib"
\
  ..\toke.o ..\regcomp.o ..\regexec.o ..\op.o ..\sv.o ..\pp.o ..\pp_ctl.o
..\pp_sys.o ..\pp_pack.o ..\pp_hot.o ..\gv.o ..\perl.o ..\utf8.o ..\dump.o
..\hv.o ..\av.o ..\caretx.o ..\deb.o ..\doio.o ..\doop.o ..\dquote.o
..\globals.o ..\mro_core.o ..\locale.o ..\keywords.o ..\mathoms.o ..\mg.o
..\numeric.o ..\pad.o ..\perlapi.o ..\perly.o ..\pp_sort.o ..\reentr.o
..\run.o ..\scope.o ..\taint.o ..\time64.o ..\universal.o ..\util.o
perllib.o ..\perlio.o .\win32.o .\win32sck.o .\win32thread.o .\fcrypt.o
.\win32io.o ..\DynaLoader.o
..\lib\auto\Win32CORE\Win32CORE.a -lmoldname -lkernel32 -luser32 -lgdi32 -
lwinspool -lcomdlg32 -ladvapi32 -lshell32 -lole32 -loleaut32 -lnetapi32 -luu
id -lws2_32 -lmpr -lwinmm -lversion -lodbc32 -lodbccp32 -lcomctl32
..\lib\CORE\perl527.exp
..\miniperl.exe -I..\lib ..\make_ext.pl
"MAKE=gmake" --dir=..\cpan --dir=..\dist --dir=..\ext --dynamic
+Unicode/Normalize
gmake[1]​: Entering directory
'C​:/_32/comp/perl-5.27.7/dist/Unicode-Normalize'
C​:\_32\comp\perl-5.27.7\miniperl.exe
"-I..\..\lib" -MExtUtils​::Command​::MM -e cp_nonempty -- Normalize.bs
..\..\lib\auto\Unicode\Normalize\Normalize.bs 644
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/dist/Unicode-Normalize'
..\miniperl.exe -I..\lib ..\make_ext.pl
"MAKE=gmake" --dir=..\cpan --dir=..\dist --dir=..\ext --nonxs !libs
Running pm_to_blib for cpan/Pod-Simple directly
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/dist/lib'
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/dist/lib'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/Archive-Tar'
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/Archive-Tar'
Running pm_to_blib for dist/Attribute-Handlers directly
Running pm_to_blib for cpan/AutoLoader directly
Running pm_to_blib for cpan/B-Debug directly
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/CPAN'
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/CPAN'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/CPAN-Meta'
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/CPAN-Meta'
Running pm_to_blib for cpan/CPAN-Meta-Requirements directly
Running pm_to_blib for cpan/CPAN-Meta-YAML directly
Running pm_to_blib for dist/Carp directly
Running pm_to_blib for cpan/Config-Perl-V directly
Running pm_to_blib for dist/Devel-SelfStubber directly
Running pm_to_blib for cpan/Digest directly
Running pm_to_blib for dist/Dumpvalue directly
Running pm_to_blib for dist/Env directly
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/ext/Errno'
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/ext/Errno'
Running pm_to_blib for dist/Exporter directly
Running pm_to_blib for dist/ExtUtils-CBuilder directly
Running pm_to_blib for cpan/ExtUtils-Constant directly
Running pm_to_blib for cpan/ExtUtils-Install directly
gmake[1]​: Entering directory
'C​:/_32/comp/perl-5.27.7/cpan/ExtUtils-MakeMaker'
gmake[1]​: Leaving directory
'C​:/_32/comp/perl-5.27.7/cpan/ExtUtils-MakeMaker'
gmake[1]​: Entering directory
'C​:/_32/comp/perl-5.27.7/cpan/ExtUtils-Manifest'
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/ExtUtils-Manifest'
Running pm_to_blib for ext/ExtUtils-Miniperl directly
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/dist/ExtUtils-ParseXS'
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/dist/ExtUtils-ParseXS'
Running pm_to_blib for cpan/File-Fetch directly
Running pm_to_blib for ext/File-Find directly
Running pm_to_blib for cpan/File-Path directly
Running pm_to_blib for cpan/File-Temp directly
Running pm_to_blib for ext/FileCache directly
Running pm_to_blib for dist/Filter-Simple directly
Running pm_to_blib for cpan/Getopt-Long directly
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/HTTP-Tiny'
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/HTTP-Tiny'
Running pm_to_blib for dist/I18N-Collate directly
Running pm_to_blib for dist/I18N-LangTags directly
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/IO-Compress'
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/IO-Compress'
Running pm_to_blib for cpan/IO-Socket-IP directly
Running pm_to_blib for cpan/IO-Zlib directly
Running pm_to_blib for cpan/IPC-Cmd directly
Running pm_to_blib for ext/IPC-Open3 directly
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/JSON-PP'
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/JSON-PP'
Running pm_to_blib for cpan/Locale-Codes directly
Running pm_to_blib for dist/Locale-Maketext directly
Running pm_to_blib for cpan/Locale-Maketext-Simple directly
Running pm_to_blib for cpan/Math-BigInt directly
Running pm_to_blib for cpan/Math-BigRat directly
Running pm_to_blib for cpan/Math-Complex directly
Running pm_to_blib for cpan/Memoize directly
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/dist/Module-CoreList'
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/dist/Module-CoreList'
Running pm_to_blib for cpan/Module-Load directly
Running pm_to_blib for cpan/Module-Load-Conditional directly
Running pm_to_blib for cpan/Module-Loaded directly
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/Module-Metadata'
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/Module-Metadata'
Running pm_to_blib for cpan/NEXT directly
Running pm_to_blib for dist/Net-Ping directly
Running pm_to_blib for cpan/Params-Check directly
Running pm_to_blib for cpan/Perl-OSType directly
Running pm_to_blib for cpan/PerlIO-via-QuotedPrint directly
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/Pod-Checker'
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/Pod-Checker'
Running pm_to_blib for cpan/Pod-Escapes directly
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/ext/Pod-Functions'
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/ext/Pod-Functions'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/ext/Pod-Html'
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/ext/Pod-Html'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/Pod-Parser'
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/Pod-Parser'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/Pod-Perldoc'
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/Pod-Perldoc'
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/Pod-Usage'
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/Pod-Usage'
Running pm_to_blib for dist/Safe directly
Running pm_to_blib for dist/Search-Dict directly
Running pm_to_blib for dist/SelfLoader directly
Running pm_to_blib for cpan/Term-ANSIColor directly
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/Term-Cap'
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/Term-Cap'
Running pm_to_blib for dist/Term-Complete directly
Running pm_to_blib for dist/Term-ReadLine directly
Running pm_to_blib for dist/Test directly
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/Test-Harness'
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/Test-Harness'
Running pm_to_blib for cpan/Test-Simple directly
Running pm_to_blib for dist/Text-Abbrev directly
Running pm_to_blib for cpan/Text-Balanced directly
Running pm_to_blib for cpan/Text-ParseWords directly
Running pm_to_blib for cpan/Text-Tabs directly
Running pm_to_blib for dist/Thread-Queue directly
Running pm_to_blib for dist/Thread-Semaphore directly
Running pm_to_blib for dist/Tie-File directly
Running pm_to_blib for ext/Tie-Memoize directly
Running pm_to_blib for cpan/Tie-RefHash directly
Running pm_to_blib for cpan/Time-Local directly
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/dist/XSLoader'
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/dist/XSLoader'
Running pm_to_blib for cpan/autodie directly
Running pm_to_blib for dist/autouse directly
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/dist/base'
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/dist/base'
Running pm_to_blib for cpan/bignum directly
Running pm_to_blib for dist/constant directly
Running pm_to_blib for dist/encoding-warnings directly
Running pm_to_blib for cpan/experimental directly
Running pm_to_blib for dist/if directly
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/libnet'
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/libnet'
Running pm_to_blib for cpan/parent directly
Running pm_to_blib for cpan/perlfaq directly
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/cpan/podlators'
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/cpan/podlators'
Running pm_to_blib for cpan/version directly
cd ..\utils && gmake PERL=..\miniperl.exe
gmake[1]​: Entering directory 'C​:/_32/comp/perl-5.27.7/utils'
gmake[1]​: Nothing to be done for 'all'.
gmake[1]​: Leaving directory 'C​:/_32/comp/perl-5.27.7/utils'
copy ..\README.aix ..\pod\perlaix.pod
  1 file(s) copied.
copy ..\README.amiga ..\pod\perlamiga.pod
  1 file(s) copied.
copy ..\README.android ..\pod\perlandroid.pod
  1 file(s) copied.
copy ..\README.bs2000 ..\pod\perlbs2000.pod
  1 file(s) copied.
copy ..\README.ce ..\pod\perlce.pod
  1 file(s) copied.
copy ..\README.cn ..\pod\perlcn.pod
  1 file(s) copied.
copy ..\README.cygwin ..\pod\perlcygwin.pod
  1 file(s) copied.
copy ..\README.dos ..\pod\perldos.pod
  1 file(s) copied.
copy ..\README.freebsd ..\pod\perlfreebsd.pod
  1 file(s) copied.
copy ..\README.haiku ..\pod\perlhaiku.pod
  1 file(s) copied.
copy ..\README.hpux ..\pod\perlhpux.pod
  1 file(s) copied.
copy ..\README.hurd ..\pod\perlhurd.pod
  1 file(s) copied.
copy ..\README.irix ..\pod\perlirix.pod
  1 file(s) copied.
copy ..\README.jp ..\pod\perljp.pod
  1 file(s) copied.
copy ..\README.ko ..\pod\perlko.pod
  1 file(s) copied.
copy ..\README.linux ..\pod\perllinux.pod
  1 file(s) copied.
copy ..\README.macos ..\pod\perlmacos.pod
  1 file(s) copied.
copy ..\README.macosx ..\pod\perlmacosx.pod
  1 file(s) copied.
copy ..\README.netware ..\pod\perlnetware.pod
  1 file(s) copied.
copy ..\README.openbsd ..\pod\perlopenbsd.pod
  1 file(s) copied.
copy ..\README.os2 ..\pod\perlos2.pod
  1 file(s) copied.
copy ..\README.os390 ..\pod\perlos390.pod
  1 file(s) copied.
copy ..\README.os400 ..\pod\perlos400.pod
  1 file(s) copied.
copy ..\README.plan9 ..\pod\perlplan9.pod
  1 file(s) copied.
copy ..\README.qnx ..\pod\perlqnx.pod
  1 file(s) copied.
copy ..\README.riscos ..\pod\perlriscos.pod
  1 file(s) copied.
copy ..\README.solaris ..\pod\perlsolaris.pod
  1 file(s) copied.
copy ..\README.symbian ..\pod\perlsymbian.pod
  1 file(s) copied.
copy ..\README.synology ..\pod\perlsynology.pod
  1 file(s) copied.
copy ..\README.tru64 ..\pod\perltru64.pod
  1 file(s) copied.
copy ..\README.tw ..\pod\perltw.pod
  1 file(s) copied.
copy ..\README.vos ..\pod\perlvos.pod
  1 file(s) copied.
copy ..\README.win32 ..\pod\perlwin32.pod
  1 file(s) copied.
copy ..\pod\perldelta.pod ..\pod\perl5277delta.pod
  1 file(s) copied.
..\miniperl.exe -I..\lib bin\pl2bat.pl ..\utils\h2ph ..\utils\splain
..\utils\perlbug ..\utils\pl2pm ..\utils\h2xs ..\utils\perldoc
..\utils\perlivp ..\utils\libnetcfg ..\utils\enc2xs ..\utils\encguess
..\utils\piconv ..\utils\corelist ..\utils\cpan ..\utils\xsubpp
..\utils\pod2html ..\utils\prove ..\utils\ptar ..\utils\ptardiff
..\utils\ptargrep ..\utils\zipdetails ..\utils\shasum ..\utils\instmodsh
..\utils\json_pp bin\exetype.pl bin\runperl.pl bin\pl2bat.pl bin\perlglob.pl
bin\search.pl
..\miniperl.exe -I..\lib ..\autodoc.pl ..
..\miniperl.exe -I..\lib ..\pod\perlmodlib.PL -q ..
..\perl.exe -f ..\pod\buildtoc -q
Use of uninitialized value $_ in substitution (s///) at ..\pod\buildtoc line
215, <$fh> chunk 2.
Use of uninitialized value $_ in pattern match (m//) at ..\pod\buildtoc line
216, <$fh> chunk 2.
Use of uninitialized value $_ in substitution (s///) at ..\pod\buildtoc line
219, <$fh> chunk 2.
Use of uninitialized value $_ in substitution (s///) at ..\pod\buildtoc line
219, <$fh> chunk 2.
if exist C​:\_32\gcc-mingw-720\mingw32\bin\libgcc_s_seh-1.dll xcopy /f /r /i
/d /y C​:\_32\gcc-mingw-720\mingw32\bin\libgcc_s_seh-1.dll ..\t\
if exist C​:\_32\gcc-mingw-720\mingw32\bin\libgcc_s_sjlj-1.dll xcopy /f /r /i
/d /y C​:\_32\gcc-mingw-720\mingw32\bin\libgcc_s_sjlj-1.dll ..\t\
if exist C​:\_32\gcc-mingw-720\mingw32\bin\libgcc_s_dw2-1.dll xcopy /f /r /i
/d /y C​:\_32\gcc-mingw-720\mingw32\bin\libgcc_s_dw2-1.dll ..\t\
0 File(s) copied
if exist C​:\_32\gcc-mingw-720\mingw32\bin\libstdc++-6.dll xcopy /f /r /i /d
/y C​:\_32\gcc-mingw-720\mingw32\bin\libstdc++-6.dll ..\t\
0 File(s) copied
if exist C​:\_32\gcc-mingw-720\mingw32\bin\libwinpthread-1.dll xcopy /f /r /i
/d /y C​:\_32\gcc-mingw-720\mingw32\bin\libwinpthread-1.dll ..\t\
0 File(s) copied
xcopy /f /r /i /d /y ..\perl.exe ..\t\
0 File(s) copied
xcopy /f /r /i /d /y ..\perl527.dll ..\t\
C​:\_32\comp\perl-5.27.7\perl527.dll -> C​:\_32\comp\perl-5.27.7\t\perl527.dll
1 File(s) copied
xcopy /f /r /i /d /y ..\perlglob.exe ..\t\
0 File(s) copied
set PERL_STATIC_EXT=Win32CORE && \
  cd ..\t && perl.exe harness
'1' is not recognized as an internal or external command,
operable program or batch file.
base/cond.t ........................................................
No subtests run
'1' is not recognized as an internal or external command,
operable program or batch file.
base/if.t ..........................................................
No subtests run

[snip many more of the same]

'1' is not recognized as an internal or external command,
operable program or batch file.
../lib/vmsish.t ....................................................
No subtests run
'1' is not recognized as an internal or external command,
operable program or batch file.
../lib/warnings.t ..................................................
No subtests run

Test Summary Report

base/cond.t (Wstat​: 0
Tests​: 0 Failed​: 0)
  Parse errors​: No plan found in TAP output
base/if.t (Wstat​: 0
Tests​: 0 Failed​: 0)
  Parse errors​: No plan found in TAP output

[snip many more of the same]

../lib/vmsish.t (Wstat​: 0
Tests​: 0 Failed​: 0)
  Parse errors​: No plan found in TAP output
../lib/warnings.t (Wstat​: 0
Tests​: 0 Failed​: 0)
  Parse errors​: No plan found in TAP output
Files=2641, Tests=0, 42 wallclock secs (17.82 usr + 4.70 sys = 22.51 CPU)
Result​: FAIL
GNUmakefile​:1838​: recipe for target 'test' failed
make​: *** [test] Error 2641

From @sisyphus

-----Original Message-----
From​: Sisyphus (via RT)

In a nutshell, the command 'perl.exe harness', when run from the win32/t
folder ....

Duh - there is no such folder. I meant the top-level/t folder (or
win32/../t)

Cheers,
Rob

From zefram@fysh.org

Sisyphus wrote​:

'1' is not recognized as an internal or external command,
operable program or batch file.

That sounds like something is passing a one-element array
to readpipe() in list context. It would be broken by commit
397baf2 which fixed [perl #4574].

-zefram

The RT System itself - Status changed from 'new' to 'open'

From zefram@fysh.org

I wrote​:

That sounds like something is passing a one-element array
to readpipe() in list context.

But I don't see any code in the core distro that would do that.
This needs a Windows person to track it down.

-zefram

From @steve-m-hay

On 21 December 2017 at 04​:49, Zefram <zefram@​fysh.org> wrote​:

Sisyphus wrote​:

'1' is not recognized as an internal or external command,
operable program or batch file.

That sounds like something is passing a one-element array
to readpipe() in list context. It would be broken by commit
397baf2 which fixed [perl #4574].

Current blead (fe2024f) is failing
just the same for me.
Reverting 397baf2 does not fix it.
I will have a look later if nobody else has got there. Sorry I missed
this for 5.27.7.

From @steve-m-hay

On 21 December 2017 at 08​:37, Steve Hay <steve.m.hay@​googlemail.com> wrote​:

On 21 December 2017 at 04​:49, Zefram <zefram@​fysh.org> wrote​:

Sisyphus wrote​:

'1' is not recognized as an internal or external command,
operable program or batch file.

That sounds like something is passing a one-element array
to readpipe() in list context. It would be broken by commit
397baf2 which fixed [perl #4574].

Current blead (fe2024f) is failing
just the same for me.
Reverting 397baf2 does not fix it.
I will have a look later if nobody else has got there. Sorry I missed
this for 5.27.7.

I had a quick skim through the changes since I last made a commit
(when things were definitely working) and tried a couple of builds
before/after likely candidates for the cause. I quickly found the
culprit is this​:

64def2a​: perform system() arg
processing before fork

but I won't have time to investigate further until later.

From @xenu

On Thu, 21 Dec 2017, at 10​:34, Steve Hay via perl5-porters wrote​:

I had a quick skim through the changes since I last made a commit
(when things were definitely working) and tried a couple of builds
before/after likely candidates for the cause. I quickly found the
culprit is this​:

64def2a​: perform system() arg
processing before fork

but I won't have time to investigate further until later.

Perhaps it has something to do with windows-specific system(1, "foo") hack?

Excerpt from perlport​:

system(1, @​args) spawns an external process and immediately returns its process designator, without waiting for it to terminate. Return value may be used subsequently in wait or waitpid PID,FLAGS. Failure to spawn() a subprocess is indicated by setting $? to 255 &lt;&lt; 8 . $? is set in a way compatible with Unix (i.e. the exit status of the subprocess is obtained by $?>> 8 , as described in the documentation).

From zefram@fysh.org

Tomasz Konojacki wrote​:

Perhaps it has something to do with windows-specific system(1, "foo") hack?

Ooh, nice. There's code in win32/win32.c's do_aspawn() that looks for
a strictly numeric first argument​:

  if (SvNIOKp(*(mark+1)) && !SvPOKp(*(mark+1))) {
  ++mark;
  flag = SvIVx(*mark);
  }

So that has the number/string bug. The argument copying that now happens
in the parent process doesn't preserve numericness, so breaks this.

Do we have to preserve the number/string bug?

-zefram

From @cpansprout

On Thu, 21 Dec 2017 04​:56​:37 -0800, zefram@​fysh.org wrote​:

Tomasz Konojacki wrote​:

Perhaps it has something to do with windows-specific system(1, "foo") hack?

Ooh, nice. There's code in win32/win32.c's do_aspawn() that looks for
a strictly numeric first argument​:

if \(SvNIOKp\(\*\(mark\+1\)\) && \!SvPOKp\(\*\(mark\+1\)\)\) \{
\+\+mark;
flag = SvIVx\(\*mark\);
\}

So that has the number/string bug. The argument copying that now happens
in the parent process doesn't preserve numericness, so breaks this.

Do we have to preserve the number/string bug?

I think in this case we have to, much as I dislike it, because there could be an executable file called "1".

--

Father Chrysostomos

From zefram@fysh.org

Should be fixed by commit 8fe3452.

-zefram

From @steve-m-hay

On Thu, 21 Dec 2017 21​:36​:43 -0800, zefram@​fysh.org wrote​:

Should be fixed by commit 8fe3452.

All working again now. Thanks for fixing this.

@steve-m-hay - Status changed from 'open' to 'resolved'