| Subject: | rmtree returns successfully before work is complete in Win7-x64 |
| Date: | Thu, 20 Oct 2011 14:09:19 -0700 |
| To: | "bug-File-Path [...] rt.cpan.org" <bug-File-Path [...] rt.cpan.org> |
| From: | Robert Sigel <robert [...] achronix.com> |
Bug observed in:
Perl Version(s): (full details from -V included at the end of the message)
64-bit Strawberry Perl 5.12.3.0
64-bit ActivePerl 5.14.2.1402
OS vendor/version:
Microsoft Windows 7 Professional version 6.1 (Build 7601: Service Pack 1)
code snippet exhibiting the bug:
rmtree "$outdir" || die "Can't delete $outdir directory tree !\n\t$!";
print "DEBUG: removed $outdir tree\n";
if (!(-r $outdir)) {
mkdir($outdir,0755) || die "Can't make release output directory !\n\t$!";
print "DEBUG: $outdir recreated\n"
} else {
print "WARNING: $outdir still exists!\n";
}
if (!(-r $outdir."/system")) {
mkdir("$outdir/system",0755) || die "Can't make release output directory (2)!\n\t$!";
print "DEBUG: ".$outdir."/system recreated\n"
} else {
print "WARNING: ".$outdir."/system still exists!\n";
}
When $outdir is a large directory tree (in this case, 2700+ files, 305+ subdirs, 550MB+ of data), the first -r readability check (for $outdir itself) passes, finding the $outdir directory, despite the prior tree deletion.
Then the second readability check (for the $outdir/system subdir) fails, and we try to create the subdir, but cannot, since now the parent dir does not exist. (Despite the error message about permissions, observing the directory structure after the code dies proves that the $outdir does not exist.) Running the above code (where $outdir is an existing populated dir tree named 'Release-Output') produces the output below.
DEBUG: removed Release-Output tree
WARNING: Release-Output still exists!
Can't make release output directory (2)!
Permission denied at d:/src/win3/main/software/build-utils/build_release.pl line 475.
Details which may be relevant:
This is in a single-threaded build system - no other threads are manipulating the directory structure at this time.
An antivirus suite is running on this workstation - the impact upon low-level filesystem operations is unknown.
The D: drive containing both the script and the $outdir is a 2-disk RAID0 array. (The OS should abstract this away, but...)
This perl code behaves correctly on WinXP-32 SP3 and various flavors of Linux (multiple different Perl vendors/versions).
I'm a beginning perl developer who's inherited this 'mature' script. This bug was found during our migration to Win7-64. I've added the debug and warning print statements.
=================
Strawberry perl -V reports the following:
-------
Summary of my perl5 (revision 5 version 12 subversion 3) configuration:
Platform:
osname=MSWin32, osvers=6.1, archname=MSWin32-x64-multi-thread
uname='Win32 strawberryperl 5.12.3.0 #1 Sun May 15 09:43:50 2011 x64'
config_args='undef'
hint=recommended, useposix=true, d_sigaction=undef
useithreads=define, usemultiplicity=define
useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
use64bitint=define, use64bitall=undef, uselongdouble=undef
usemymalloc=n, bincompat5005=undef
Compiler:
cc='gcc', ccflags =' -s -O2 -DWIN32 -DHAVE_DES_FCRYPT -DWIN64 -DCONSERVATIVE -DUSE_SITECUSTOMIZE -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -fno-strict-aliasing -mms-bitfields -DPERL_MSVCRT_READFIX',
optimize='-s -O2',
cppflags='-DWIN32'
ccversion='', gccversion='4.4.3', gccosandvers=''
intsize=4, longsize=4, ptrsize=8, doublesize=8, byteorder=12345678
d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
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:\strawberry_perl_5.12.3.0_64\perl\lib\CORE" -L"C:\strawberry_perl_5.12.3.0_64\c\lib"'
libpth=C:\strawberry_perl_5.12.3.0_64\c\lib C:\strawberry_perl_5.12.3.0_64\c\x86_64-w64-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=libperl512.a
gnulibc_version=''
Dynamic Linking:
dlsrc=dl_win32.xs, dlext=dll, d_dlsymun=undef, ccdlflags=' '
cccdlflags=' ', lddlflags='-mdll -s -L"C:\strawberry_perl_5.12.3.0_64\perl\lib\CORE" -L"C:\strawberry_perl_5.12.3.0_64\c\lib"'
Characteristics of this binary (from libperl):
Compile-time options: MULTIPLICITY PERL_DONT_CREATE_GVSV
PERL_IMPLICIT_CONTEXT PERL_IMPLICIT_SYS
PERL_MALLOC_WRAP PL_OP_SLAB_ALLOC USE_64_BIT_INT
USE_ITHREADS USE_LARGE_FILES USE_PERLIO USE_PERL_ATOF
USE_SITECUSTOMIZE
Built under MSWin32
Compiled at May 15 2011 09:52:35
%ENV:
PERL_JSON_BACKEND="JSON::XS"
PERL_YAML_BACKEND="YAML"
@INC:
C:/strawberry_perl_5.12.3.0_64/perl/site/lib
C:/strawberry_perl_5.12.3.0_64/perl/vendor/lib
C:/strawberry_perl_5.12.3.0_64/perl/lib
.
============
ActivePerl perl -V reports the following:
-------
Summary of my perl5 (revision 5 version 14 subversion 2) configuration:
Platform:
osname=MSWin32, osvers=5.2, archname=MSWin32-x64-multi-thread
uname=''
config_args='undef'
hint=recommended, useposix=true, d_sigaction=undef
useithreads=define, usemultiplicity=define
useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
use64bitint=define, use64bitall=undef, uselongdouble=undef
usemymalloc=n, bincompat5005=undef
Compiler:
cc='cl', ccflags ='-nologo -GF -W3 -MD -Zi -DNDEBUG -Ox -GL -fp:precise -DWIN32 -D_CONSOLE -DNO_STRICT -DWIN64 -DCONSERVATIVE -DPERL_TEXTMODE_SCRIPTS -DUSE_SITECUSTOMIZE -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -DUSE_PERLIO',
optimize='-MD -Zi -DNDEBUG -Ox -GL -fp:precise',
cppflags='-DWIN32'
ccversion='16.0.30319', gccversion='', gccosandvers=''
intsize=4, longsize=4, ptrsize=8, doublesize=8, byteorder=12345678
d_longlong=undef, longlongsize=8, d_longdbl=define, longdblsize=8
ivtype='__int64', ivsize=8, nvtype='double', nvsize=8, Off_t='__int64', lseeksize=8
alignbytes=8, prototype=define
Linker and Libraries:
ld='link', ldflags ='-nologo -nodefaultlib -debug -opt:ref,icf -ltcg -libpath:"C:\ActivePerl64\lib\CORE" -machine:AMD64'
libpth=\lib
libs=oldnames.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib netapi32.lib uuid.lib ws2_32.lib mpr.lib winmm.lib version.lib odbc32.lib odbccp32.lib
comctl32.lib msvcrt.lib
perllibs=oldnames.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib netapi32.lib uuid.lib ws2_32.lib mpr.lib winmm.lib version.lib odbc32.lib odbccp32.
lib comctl32.lib bufferoverflowU.lib msvcrt.lib
libc=msvcrt.lib, so=dll, useshrplib=true, libperl=perl514.lib
gnulibc_version=''
Dynamic Linking:
dlsrc=dl_win32.xs, dlext=dll, d_dlsymun=undef, ccdlflags=' '
cccdlflags=' ', lddlflags='-dll -nologo -nodefaultlib -debug -opt:ref,icf -ltcg -libpath:"C:\ActivePerl64\lib\CORE" -machine:AMD64'
Characteristics of this binary (from libperl):
Compile-time options: MULTIPLICITY PERL_DONT_CREATE_GVSV
PERL_IMPLICIT_CONTEXT PERL_IMPLICIT_SYS
PERL_MALLOC_WRAP PERL_PRESERVE_IVUV PL_OP_SLAB_ALLOC
USE_64_BIT_INT USE_ITHREADS USE_LARGE_FILES
USE_PERLIO USE_PERL_ATOF USE_SITECUSTOMIZE
Locally applied patches:
ActivePerl Build 1402 [295342]
Built under MSWin32
Compiled at Oct 7 2011 15:19:36
%ENV:
PERL_JSON_BACKEND="JSON::XS"
PERL_YAML_BACKEND="YAML"
@INC:
C:/ActivePerl64/site/lib
C:/ActivePerl64/lib
.