E:\>perl
use strict;
use warnings;
use threads;

for (my $i = 1; $i < 3; $i ++) {
    threads->create(\&abc)->detach();
}
<>;

sub abc {
}
__END__


E:\>perl -V
Summary of my perl5 (revision 5 version 8 subversion 2) configuration:
  Platform:
    osname=MSWin32, osvers=4.0, archname=MSWin32-x86-multi-thread
    uname=''
    config_args='undef'
    hint=recommended, useposix=true, d_sigaction=undef
    usethreads=undef use5005threads=undef useithreads=define usemultip
+licity=define
    useperlio=define d_sfio=undef uselargefiles=define usesocks=undef
    use64bitint=undef use64bitall=undef uselongdouble=undef
    usemymalloc=n, bincompat5005=undef
  Compiler:
    cc='cl', ccflags ='-nologo -Gf -W3 -MD -DNDEBUG -O1 -DWIN32 -D_CON
+SOLE -DNO_STRICT -DHAVE_DES_FCRYPT   -DPERL_IMPLIC
IT_CONTEXT -DPERL_IMPLICIT_SYS -DUSE_PERLIO -DPERL_MSVCRT_READFIX',
    optimize='-MD -DNDEBUG -O1',
    cppflags='-DWIN32'
    ccversion='', gccversion='', gccosandvers=''
    intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
    d_longlong=undef, longlongsize=8, d_longdbl=define, longdblsize=10
    ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='__int64
+', lseeksize=8
    alignbytes=8, prototype=define
  Linker and Libraries:
    ld='link', ldflags ='-nologo -nodefaultlib -release  -libpath:"G:\
+perls\5.8.2\lib\CORE"  -machine:x86'
    libpth=\lib \site\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 wsock32.lib mpr.lib winmm.lib  ver
+sion.lib odbc32.lib odbccp32.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 wsock32.lib mpr.lib winmm.lib 
+ version.lib odbc32.lib odbccp32.lib msvcrt.lib
    libc=msvcrt.lib, so=dll, useshrplib=yes, libperl=perl58.lib
    gnulibc_version='undef'
  Dynamic Linking:
    dlsrc=dl_win32.xs, dlext=dll, d_dlsymun=undef, ccdlflags=' '
    cccdlflags=' ', lddlflags='-dll -nologo -nodefaultlib -release  -l
+ibpath:"G:\perls\5.8.2\lib\CORE"  -machine:x86'


Characteristics of this binary (from libperl):
  Compile-time options: MULTIPLICITY USE_ITHREADS USE_LARGE_FILES PERL
+_IMPLICIT_CONTEXT PERL_IMPLICIT_SYS
  Built under MSWin32
  Compiled at Nov  5 2003 21:13:21
  %ENV:
    PERL5LIB="G:\perls\5.8.2\site\lib;"
  @INC:
    G:\perls\5.8.2\site\lib
    G:/perls/5.8.2/lib
    .

E:\>
[download]

update: I should note that both the threads cause this violation, but that this is only apparent in the debug version (in the non-debug version it's death after the 1st), and that like corion, I can't reliably reproduce this (sometimes I have no problems running the snippet, sometimes I do).

It appears that the interactive invocation can cause the error also.

E:\>perl -V
Summary of my perl5 (revision 5 version 8 subversion 2) configuration:
  Platform:
    osname=MSWin32, osvers=4.0, archname=MSWin32-x86-multi-thread
    uname=''
    config_args='undef'
    hint=recommended, useposix=true, d_sigaction=undef
    usethreads=undef use5005threads=undef useithreads=define usemultip
+licity=define
    useperlio=define d_sfio=undef uselargefiles=define usesocks=undef
    use64bitint=undef use64bitall=undef uselongdouble=undef
    usemymalloc=n, bincompat5005=undef
  Compiler:
    cc='cl', ccflags ='-nologo -Gf -W3 -Od -MD -Zi -DDEBUGGING -DWIN32
+ -D_CONSOLE -DNO_STRICT -DHAVE_DES_FCRYPT  -DPERL_
IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -DUSE_PERLIO -DPERL_MSVCRT_READFI
+X',
    optimize='-Od -MD -Zi -DDEBUGGING',
    cppflags='-DWIN32'
    ccversion='', gccversion='', gccosandvers=''
    intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
    d_longlong=undef, longlongsize=8, d_longdbl=define, longdblsize=10
    ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='__int64
+', lseeksize=8
    alignbytes=8, prototype=define
  Linker and Libraries:
    ld='link', ldflags ='-nologo -nodefaultlib -debug  -libpath:"G:\pe
+rls\5.8.2d\lib\CORE"  -machine:x86'
    libpth=E:\PROGRA~1\MICROS~4\VC98\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 wsock32.lib mpr.lib winmm.lib  ver
+sion.lib odbc32.lib odbccp32.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 wsock32.lib mpr.lib winmm.lib 
+ version.lib odbc32.lib odbccp32.lib msvcrt.lib
    libc=msvcrt.lib, so=dll, useshrplib=yes, libperl=perl58.lib
    gnulibc_version='undef'
  Dynamic Linking:
    dlsrc=dl_win32.xs, dlext=dll, d_dlsymun=undef, ccdlflags=' '
    cccdlflags=' ', lddlflags='-dll -nologo -nodefaultlib -debug  -lib
+path:"G:\perls\5.8.2d\lib\CORE"  -machine:x86'


Characteristics of this binary (from libperl):
  Compile-time options: DEBUGGING MULTIPLICITY USE_ITHREADS USE_LARGE_
+FILES PERL_IMPLICIT_CONTEXT PERL_IMPLICIT_SYS
  Built under MSWin32
  Compiled at Dec 13 2003 11:48:33
  %ENV:
    PERL5LIB="G:\perls\5.8.2d\site\lib;"
  @INC:
    G:\perls\5.8.2d\site\lib
    G:/perls/5.8.2d/lib
    .

E:\>
[download]