Closed
Description
I have built a debug version of perl 5.37.6 on Windows 11 using MinGW-w64 and gcc 11.3.0 from https://winlibs.com/ (using the MSVCRT runtime library). Note that this includes #20271, which fixes the readlink behavior on Windows, see #20460 for more information.
When trying to install Path::Tiny using this perl I get a test failure due to lstat returning a zero size. Here is a minimal example:
use feature qw(say);
use strict;
use warnings;
my $fn = 'foo.txt';
open (my $fh, '>', $fn) or die "Could not open file '$fn': $!";
say $fh "Hello";
close $fh;
my $link = 'bar.txt';
if (-e $link) {
unlink $link or die "Could not unlink '$link': $!";
}
symlink $fn, $link or die "Could not create symlink: $!";
my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
$atime,$mtime,$ctime,$blksize,$blocks) = lstat $link;
say "symlink size: $size";
The output is:
symlink size: 0
expected output:
symlink size: 7
The expected size is 7 since the size of a symlink should be equal to the length of its path name according to the lstat(2) man page.
> perl -V
Summary of my perl5 (revision 5 version 37 subversion 6) configuration:
Commit id: a589f4b93cf3864d7f665d0974e2d36f028b00b6
Platform:
osname=MSWin32
osvers=10.0.22000.1098
archname=MSWin32-x64-multi-thread
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
Compiler:
cc='gcc'
ccflags =' -DWIN32 -DWIN64 -DDEBUGGING -DPERL_TEXTMODE_SCRIPTS -DMULTIPLICITY -DPERL_IMPLICIT_SYS -DUSE_PERLIO -D__USE_MINGW_ANSI_STDIO -fwrapv -fno-strict-aliasing -mms-bitfields'
optimize='-g -O0'
cppflags='-DWIN32'
ccversion=''
gccversion='11.3.0'
gccosandvers=''
intsize=4
longsize=4
ptrsize=8
doublesize=8
byteorder=12345678
doublekind=3
d_longlong=define
longlongsize=8
d_longdbl=define
longdblsize=16
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 ='-g -L"c:\perl-debug\lib\CORE" -L"C:\Winlibs64-Gcc11.3-msvcrt\mingw64\lib" -L"C:\Winlibs64-Gcc11.3-msvcrt\mingw64\x86_64-w64-mingw32\lib" -L"C:\Winlibs64-Gcc11.3-msvcrt\mingw64\lib\gcc\x86_64-w64-mingw32\11.3.0"'
libpth=C:\Winlibs64-Gcc11.3-msvcrt\mingw64\lib C:\Winlibs64-Gcc11.3-msvcrt\mingw64\x86_64-w64-mingw32\lib C:\Winlibs64-Gcc11.3-msvcrt\mingw64\lib\gcc\x86_64-w64-mingw32\11.3.0
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=libperl537.a
gnulibc_version=''
Dynamic Linking:
dlsrc=dl_win32.xs
dlext=dll
d_dlsymun=undef
ccdlflags=' '
cccdlflags=' '
lddlflags='-shared -g -L"c:\perl-debug\lib\CORE" -L"C:\Winlibs64-Gcc11.3-msvcrt\mingw64\lib" -L"C:\Winlibs64-Gcc11.3-msvcrt\mingw64\x86_64-w64-mingw32\lib" -L"C:\Winlibs64-Gcc11.3-msvcrt\mingw64\lib\gcc\x86_64-w64-mingw32\11.3.0"'
Characteristics of this binary (from libperl):
Compile-time options:
DEBUGGING
HAS_TIMES
HAVE_INTERP_INTERN
MULTIPLICITY
PERLIO_LAYERS
PERL_COPY_ON_WRITE
PERL_DONT_CREATE_GVSV
PERL_HASH_FUNC_SIPHASH13
PERL_HASH_USE_SBOX32
PERL_IMPLICIT_SYS
PERL_MALLOC_WRAP
PERL_OP_PARENT
PERL_PRESERVE_IVUV
PERL_TRACK_MEMPOOL
PERL_USE_SAFE_PUTENV
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 Nov 2 2022 00:00:55
@INC:
C:/perl-debug/site/lib
C:/perl-debug/lib