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[perl5.git] / win32 / win32.c
index 347bff3..aacc656 100644 (file)
 #ifndef HWND_MESSAGE
 #  define HWND_MESSAGE     ((HWND)-3)
 #endif
-/* GCC-2.95.2/Mingw32-1.1 forgot the WINAPI on CommandLineToArgvW() */
-#if defined(__MINGW32__) && (__MINGW32_MAJOR_VERSION==1)       
-#  include <shellapi.h>
-#else
-   LPWSTR* WINAPI CommandLineToArgvW(LPCWSTR lpCommandLine, int * pNumArgs);
+#ifndef WC_NO_BEST_FIT_CHARS
+#  define WC_NO_BEST_FIT_CHARS 0x00000400
 #endif
 #include <winnt.h>
+#include <tlhelp32.h>
 #include <io.h>
 #include <signal.h>
 
+#define SystemProcessesAndThreadsInformation 5
+
+/* Inline some definitions from the DDK */
+typedef struct {
+    USHORT         Length;
+    USHORT         MaximumLength;
+    PWSTR          Buffer;
+}   UNICODE_STRING;
+
+typedef struct {
+    ULONG           NextEntryDelta;
+    ULONG          ThreadCount;
+    ULONG          Reserved1[6];
+    LARGE_INTEGER   CreateTime;
+    LARGE_INTEGER   UserTime;
+    LARGE_INTEGER   KernelTime;
+    UNICODE_STRING  ProcessName;
+    LONG           BasePriority;
+    ULONG          ProcessId;
+    ULONG          InheritedFromProcessId;
+    /* Remainder of the structure depends on the Windows version,
+     * but we don't need those additional fields anyways... */
+}   SYSTEM_PROCESSES;
+
 /* #include "config.h" */
 
 #if !defined(PERLIO_IS_STDIO) && !defined(USE_SFIO)
 #include "EXTERN.h"
 #include "perl.h"
 
+/* GCC-2.95.2/Mingw32-1.1 forgot the WINAPI on CommandLineToArgvW() */
+#if defined(__MINGW32__) && (__MINGW32_MAJOR_VERSION==1)
+#  include <shellapi.h>
+#else
+EXTERN_C LPWSTR* WINAPI CommandLineToArgvW(LPCWSTR lpCommandLine, int * pNumArgs);
+#endif
+
 #define NO_XSLOCKS
 #define PERL_NO_GET_CONTEXT
 #include "XSUB.h"
@@ -66,11 +95,13 @@ int _CRT_glob = 0;
 
 #if defined(__MINGW32__) && (__MINGW32_MAJOR_VERSION==1)       
 /* Mingw32-1.1 is missing some prototypes */
+START_EXTERN_C
 FILE * _wfopen(LPCWSTR wszFileName, LPCWSTR wszMode);
 FILE * _wfdopen(int nFd, LPCWSTR wszMode);
 FILE * _freopen(LPCWSTR wszFileName, LPCWSTR wszMode, FILE * pOldStream);
 int _flushall();
 int _fcloseall();
+END_EXTERN_C
 #endif
 
 #if defined(__BORLANDC__)
@@ -118,7 +149,10 @@ END_EXTERN_C
 
 static OSVERSIONINFO g_osver = {0, 0, 0, 0, 0, ""};
 
-#define ONE_K_BUFSIZE  1024
+static HANDLE (WINAPI *pfnCreateToolhelp32Snapshot)(DWORD, DWORD) = NULL;
+static BOOL   (WINAPI *pfnProcess32First)(HANDLE, PROCESSENTRY32*) = NULL;
+static BOOL   (WINAPI *pfnProcess32Next)(HANDLE, PROCESSENTRY32*) = NULL;
+static LONG   (WINAPI *pfnZwQuerySystemInformation)(UINT, PVOID, ULONG, PULONG);
 
 #ifdef __BORLANDC__
 /* Silence STDERR grumblings from Borland's math library. */
@@ -130,6 +164,21 @@ _matherr(struct _exception *a)
 }
 #endif
 
+#if _MSC_VER >= 1400
+void my_invalid_parameter_handler(const wchar_t* expression,
+    const wchar_t* function, 
+    const wchar_t* file, 
+    unsigned int line, 
+    uintptr_t pReserved)
+{
+#  ifdef _DEBUG
+    wprintf(L"Invalid parameter detected in function %s."
+            L" File: %s Line: %d\n", function, file, line);
+    wprintf(L"Expression: %s\n", expression);
+#  endif
+}
+#endif
+
 int
 IsWin95(void)
 {
@@ -145,21 +194,48 @@ IsWinNT(void)
 EXTERN_C void
 set_w32_module_name(void)
 {
+    /* this function may be called at DLL_PROCESS_ATTACH time */
     char* ptr;
-    GetModuleFileName((HMODULE)((w32_perldll_handle == INVALID_HANDLE_VALUE)
-                               ? GetModuleHandle(NULL)
-                               : w32_perldll_handle),
-                     w32_module_name, sizeof(w32_module_name));
+    HMODULE module = (HMODULE)((w32_perldll_handle == INVALID_HANDLE_VALUE)
+                               ? GetModuleHandle(NULL)
+                               : w32_perldll_handle);
+
+    OSVERSIONINFO osver; /* g_osver may not yet be initialized */
+    osver.dwOSVersionInfoSize = sizeof(osver);
+    GetVersionEx(&osver);
+
+    if (osver.dwPlatformId == VER_PLATFORM_WIN32_NT) {
+        WCHAR modulename[MAX_PATH];
+        WCHAR fullname[MAX_PATH];
+        char *ansi;
+
+        GetModuleFileNameW(module, modulename, sizeof(modulename)/sizeof(WCHAR));
+
+        /* Make sure we get an absolute pathname in case the module was loaded
+         * explicitly by LoadLibrary() with a relative path. */
+        GetFullPathNameW(modulename, sizeof(fullname)/sizeof(WCHAR), fullname, NULL);
+
+        /* remove \\?\ prefix */
+        if (memcmp(fullname, L"\\\\?\\", 4*sizeof(WCHAR)) == 0)
+            memmove(fullname, fullname+4, (wcslen(fullname+4)+1)*sizeof(WCHAR));
 
-    /* remove \\?\ prefix */
-    if (memcmp(w32_module_name, "\\\\?\\", 4) == 0)
-        memmove(w32_module_name, w32_module_name+4, strlen(w32_module_name+4)+1);
+        ansi = win32_ansipath(fullname);
+        my_strlcpy(w32_module_name, ansi, sizeof(w32_module_name));
+        win32_free(ansi);
+    }
+    else {
+        GetModuleFileName(module, w32_module_name, sizeof(w32_module_name));
+
+        /* remove \\?\ prefix */
+        if (memcmp(w32_module_name, "\\\\?\\", 4) == 0)
+            memmove(w32_module_name, w32_module_name+4, strlen(w32_module_name+4)+1);
 
-    /* try to get full path to binary (which may be mangled when perl is
-     * run from a 16-bit app) */
-    /*PerlIO_printf(Perl_debug_log, "Before %s\n", w32_module_name);*/
-    (void)win32_longpath(w32_module_name);
-    /*PerlIO_printf(Perl_debug_log, "After  %s\n", w32_module_name);*/
+        /* try to get full path to binary (which may be mangled when perl is
+         * run from a 16-bit app) */
+        /*PerlIO_printf(Perl_debug_log, "Before %s\n", w32_module_name);*/
+        win32_longpath(w32_module_name);
+        /*PerlIO_printf(Perl_debug_log, "After  %s\n", w32_module_name);*/
+    }
 
     /* normalize to forward slashes */
     ptr = w32_module_name;
@@ -736,6 +812,10 @@ win32_opendir(const char *filename)
     char               scanname[MAX_PATH+3];
     Stat_t             sbuf;
     WIN32_FIND_DATAA   aFindData;
+    WIN32_FIND_DATAW   wFindData;
+    bool                using_wide;
+    char               buffer[MAX_PATH*2];
+    char               *ptr;
 
     len = strlen(filename);
     if (len > MAX_PATH)
@@ -763,7 +843,15 @@ win32_opendir(const char *filename)
     scanname[len] = '\0';
 
     /* do the FindFirstFile call */
-    dirp->handle = FindFirstFileA(PerlDir_mapA(scanname), &aFindData);
+    if (IsWinNT()) {
+        WCHAR wscanname[sizeof(scanname)];
+        MultiByteToWideChar(CP_ACP, 0, scanname, -1, wscanname, sizeof(wscanname)/sizeof(WCHAR));
+       dirp->handle = FindFirstFileW(PerlDir_mapW(wscanname), &wFindData);
+        using_wide = TRUE;
+    }
+    else {
+       dirp->handle = FindFirstFileA(PerlDir_mapA(scanname), &aFindData);
+    }
     if (dirp->handle == INVALID_HANDLE_VALUE) {
        DWORD err = GetLastError();
        /* FindFirstFile() fails on empty drives! */
@@ -785,16 +873,31 @@ win32_opendir(const char *filename)
        return NULL;
     }
 
+    if (using_wide) {
+        BOOL use_default = FALSE;
+        WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS,
+                            wFindData.cFileName, -1,
+                            buffer, sizeof(buffer), NULL, &use_default);
+        if (use_default && *wFindData.cAlternateFileName) {
+            WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS,
+                                wFindData.cAlternateFileName, -1,
+                                buffer, sizeof(buffer), NULL, NULL);
+        }
+        ptr = buffer;
+    }
+    else {
+        ptr = aFindData.cFileName;
+    }
     /* now allocate the first part of the string table for
      * the filenames that we find.
      */
-    idx = strlen(aFindData.cFileName)+1;
+    idx = strlen(ptr)+1;
     if (idx < 256)
-       dirp->size = 128;
+       dirp->size = 256;
     else
        dirp->size = idx;
     Newx(dirp->start, dirp->size, char);
-    strcpy(dirp->start, aFindData.cFileName);
+    strcpy(dirp->start, ptr);
     dirp->nfiles++;
     dirp->end = dirp->curr = dirp->start;
     dirp->end += idx;
@@ -823,16 +926,37 @@ win32_readdir(DIR *dirp)
        dirp->curr += len + 1;
        if (dirp->curr >= dirp->end) {
            dTHX;
-           BOOL                res;
-           WIN32_FIND_DATAA    aFindData;
+           BOOL res;
+            WIN32_FIND_DATAA aFindData;
+           char buffer[MAX_PATH*2];
+            char *ptr;
 
            /* finding the next file that matches the wildcard
             * (which should be all of them in this directory!).
             */
-            res = FindNextFileA(dirp->handle, &aFindData);
+           if (IsWinNT()) {
+                WIN32_FIND_DATAW wFindData;
+               res = FindNextFileW(dirp->handle, &wFindData);
+               if (res) {
+                    BOOL use_default = FALSE;
+                    WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS,
+                                        wFindData.cFileName, -1,
+                                        buffer, sizeof(buffer), NULL, &use_default);
+                    if (use_default && *wFindData.cAlternateFileName) {
+                        WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS,
+                                            wFindData.cAlternateFileName, -1,
+                                            buffer, sizeof(buffer), NULL, NULL);
+                    }
+                    ptr = buffer;
+                }
+            }
+            else {
+                res = FindNextFileA(dirp->handle, &aFindData);
+                ptr = aFindData.cFileName;
+            }
            if (res) {
                long endpos = dirp->end - dirp->start;
-               long newsize = endpos + strlen(aFindData.cFileName) + 1;
+               long newsize = endpos + strlen(ptr) + 1;
                /* bump the string table size by enough for the
                 * new name and its null terminator */
                while (newsize > dirp->size) {
@@ -841,7 +965,7 @@ win32_readdir(DIR *dirp)
                    Renew(dirp->start, dirp->size, char);
                    dirp->curr = dirp->start + curpos;
                }
-               strcpy(dirp->start + endpos, aFindData.cFileName);
+               strcpy(dirp->start + endpos, ptr);
                dirp->end = dirp->start + newsize;
                dirp->nfiles++;
            }
@@ -1040,20 +1164,154 @@ remove_dead_pseudo_process(long child)
 }
 #endif
 
+static int
+terminate_process(DWORD pid, HANDLE process_handle, int sig)
+{
+    switch(sig) {
+    case 0:
+        /* "Does process exist?" use of kill */
+        return 1;
+    case 2:
+        if (GenerateConsoleCtrlEvent(CTRL_C_EVENT, pid))
+            return 1;
+        break;
+    case SIGBREAK:
+    case SIGTERM:
+        if (GenerateConsoleCtrlEvent(CTRL_BREAK_EVENT, pid))
+            return 1;
+        break;
+    default: /* For now be backwards compatible with perl 5.6 */
+    case 9:
+        /* Note that we will only be able to kill processes owned by the
+         * current process owner, even when we are running as an administrator.
+         * To kill processes of other owners we would need to set the
+         * 'SeDebugPrivilege' privilege before obtaining the process handle.
+         */
+        if (TerminateProcess(process_handle, sig))
+            return 1;
+        break;
+    }
+    return 0;
+}
+
+/* Traverse process tree using ToolHelp functions */
+static int
+kill_process_tree_toolhelp(DWORD pid, int sig)
+{
+    HANDLE process_handle;
+    HANDLE snapshot_handle;
+    int killed = 0;
+
+    process_handle = OpenProcess(PROCESS_TERMINATE, FALSE, pid);
+    if (process_handle == INVALID_HANDLE_VALUE)
+        return 0;
+
+    killed += terminate_process(pid, process_handle, sig);
+
+    snapshot_handle = pfnCreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
+    if (snapshot_handle != INVALID_HANDLE_VALUE) {
+        PROCESSENTRY32 entry;
+
+        entry.dwSize = sizeof(entry);
+        if (pfnProcess32First(snapshot_handle, &entry)) {
+            do {
+                if (entry.th32ParentProcessID == pid)
+                    killed += kill_process_tree_toolhelp(entry.th32ProcessID, sig);
+                entry.dwSize = sizeof(entry);
+            }
+            while (pfnProcess32Next(snapshot_handle, &entry));
+        }
+        CloseHandle(snapshot_handle);
+    }
+    CloseHandle(process_handle);
+    return killed;
+}
+
+/* Traverse process tree using undocumented system information structures.
+ * This is only necessary on Windows NT, which lacks the ToolHelp functions.
+ */
+static int
+kill_process_tree_sysinfo(SYSTEM_PROCESSES *process_info, DWORD pid, int sig)
+{
+    HANDLE process_handle;
+    SYSTEM_PROCESSES *p = process_info;
+    int killed = 0;
+
+    process_handle = OpenProcess(PROCESS_TERMINATE, FALSE, pid);
+    if (process_handle == INVALID_HANDLE_VALUE)
+        return 0;
+
+    killed += terminate_process(pid, process_handle, sig);
+
+    while (1) {
+        if (p->InheritedFromProcessId == (DWORD)pid)
+            killed += kill_process_tree_sysinfo(process_info, p->ProcessId, sig);
+
+        if (p->NextEntryDelta == 0)
+            break;
+
+        p = (SYSTEM_PROCESSES*)((char*)p + p->NextEntryDelta);
+    }
+
+    CloseHandle(process_handle);
+    return killed;
+}
+
+int
+killpg(int pid, int sig)
+{
+    /* Use "documented" method whenever available */
+    if (pfnCreateToolhelp32Snapshot && pfnProcess32First && pfnProcess32Next) {
+        return kill_process_tree_toolhelp((DWORD)pid, sig);
+    }
+
+    /* Fall back to undocumented Windows internals on Windows NT */
+    if (pfnZwQuerySystemInformation) {
+        dTHX;
+        char *buffer;
+        DWORD size = 0;
+
+        pfnZwQuerySystemInformation(SystemProcessesAndThreadsInformation, NULL, 0, &size);
+        Newx(buffer, size, char);
+
+        if (pfnZwQuerySystemInformation(SystemProcessesAndThreadsInformation, buffer, size, NULL) >= 0) {
+            int killed = kill_process_tree_sysinfo((SYSTEM_PROCESSES*)buffer, (DWORD)pid, sig);
+            Safefree(buffer);
+            return killed;
+        }
+    }
+    return 0;
+}
+
+static int
+my_kill(int pid, int sig)
+{
+    int retval = 0;
+    HANDLE process_handle;
+
+    if (sig < 0)
+        return killpg(pid, -sig);
+
+    process_handle = OpenProcess(PROCESS_TERMINATE, FALSE, pid);
+    if (process_handle != INVALID_HANDLE_VALUE) {
+        retval = terminate_process(pid, process_handle, sig);
+        CloseHandle(process_handle);
+    }
+    return retval;
+}
+
 DllExport int
 win32_kill(int pid, int sig)
 {
     dTHX;
-    HANDLE hProcess;
     long child;
-    int retval;
 #ifdef USE_ITHREADS
     if (pid < 0) {
        /* it is a pseudo-forked child */
        child = find_pseudo_pid(-pid);
        if (child >= 0) {
             HWND hwnd = w32_pseudo_child_message_hwnds[child];
-           hProcess = w32_pseudo_child_handles[child];
+           HANDLE hProcess = w32_pseudo_child_handles[child];
            switch (sig) {
            case 0:
                /* "Does process exist?" use of kill */
@@ -1101,58 +1359,19 @@ win32_kill(int pid, int sig)
     {
        child = find_pid(pid);
        if (child >= 0) {
-            hProcess = w32_child_handles[child];
-           switch(sig) {
-           case 0:
-               /* "Does process exist?" use of kill */
-               return 0;
-           case 2:
-               if (GenerateConsoleCtrlEvent(CTRL_C_EVENT,pid))
-                   return 0;
-               break;
-            case SIGBREAK:
-            case SIGTERM:
-                if (GenerateConsoleCtrlEvent(CTRL_BREAK_EVENT,pid))
-                    return 0;
-                break;
-           default: /* For now be backwards compatible with perl5.6 */
-           case 9:
-               if (TerminateProcess(hProcess, sig)) {
-                   remove_dead_process(child);
-                   return 0;
-               }
-               break;
+            if (my_kill(pid, sig)) {
+                DWORD exitcode = 0;
+                if (GetExitCodeProcess(w32_child_handles[child], &exitcode) &&
+                    exitcode != STILL_ACTIVE)
+                {
+                    remove_dead_process(child);
+                }
+                return 0;
             }
        }
        else {
 alien_process:
-            retval = -1;
-           hProcess = OpenProcess(PROCESS_ALL_ACCESS, TRUE,
-                                  (IsWin95() ? -pid : pid));
-           if (hProcess) {
-               switch(sig) {
-               case 0:
-                   /* "Does process exist?" use of kill */
-                   retval = 0;
-                    break;
-               case 2:
-                   if (GenerateConsoleCtrlEvent(CTRL_C_EVENT,pid))
-                       retval = 0;
-                   break;
-                case SIGBREAK:
-                case SIGTERM:
-                    if (GenerateConsoleCtrlEvent(CTRL_BREAK_EVENT,pid))
-                       retval = 0;
-                    break;
-               default: /* For now be backwards compatible with perl5.6 */
-                case 9:
-                   if (TerminateProcess(hProcess, sig))
-                       retval = 0;
-                    break;
-               }
-           }
-            CloseHandle(hProcess);
-            if (retval == 0)
+            if (my_kill((IsWin95() ? -pid : pid), sig))
                 return 0;
        }
     }
@@ -1167,23 +1386,36 @@ win32_stat(const char *path, Stat_t *sbuf)
     char       buffer[MAX_PATH+1];
     int                l = strlen(path);
     int                res;
-    HANDLE      handle;
     int         nlink = 1;
+    BOOL        expect_dir = FALSE;
+
+    GV          *gv_sloppy = gv_fetchpvs("\027IN32_SLOPPY_STAT",
+                                         GV_NOTQUAL, SVt_PV);
+    BOOL        sloppy = gv_sloppy && SvTRUE(GvSV(gv_sloppy));
 
     if (l > 1) {
        switch(path[l - 1]) {
        /* FindFirstFile() and stat() are buggy with a trailing
-        * backslash, so change it to a forward slash :-( */
+        * slashes, except for the root directory of a drive */
        case '\\':
-           if (l >= sizeof(buffer)) {
+        case '/':
+           if (l > sizeof(buffer)) {
                errno = ENAMETOOLONG;
                return -1;
            }
-           strncpy(buffer, path, l-1);
-           buffer[l - 1] = '/';
-           buffer[l] = '\0';
-           path = buffer;
+            --l;
+            strncpy(buffer, path, l);
+            /* remove additional trailing slashes */
+            while (l > 1 && (buffer[l-1] == '/' || buffer[l-1] == '\\'))
+                --l;
+            /* add back slash if we otherwise end up with just a drive letter */
+            if (l == 2 && isALPHA(buffer[0]) && buffer[1] == ':')
+                buffer[l++] = '\\';
+            buffer[l] = '\0';
+            path = buffer;
+            expect_dir = TRUE;
            break;
+
        /* FindFirstFile() is buggy with "x:", so add a dot :-( */
        case ':':
            if (l == 2 && isALPHA(path[0])) {
@@ -1198,17 +1430,20 @@ win32_stat(const char *path, Stat_t *sbuf)
        }
     }
 
-    /* We *must* open & close the file once; otherwise file attribute changes */
-    /* might not yet have propagated to "other" hard links of the same file.  */
-    /* This also gives us an opportunity to determine the number of links.    */
     path = PerlDir_mapA(path);
     l = strlen(path);
-    handle = CreateFileA(path, 0, 0, NULL, OPEN_EXISTING, 0, NULL);
-    if (handle != INVALID_HANDLE_VALUE) {
-       BY_HANDLE_FILE_INFORMATION bhi;
-       if (GetFileInformationByHandle(handle, &bhi))
-           nlink = bhi.nNumberOfLinks;
-       CloseHandle(handle);
+
+    if (!sloppy) {
+        /* We must open & close the file once; otherwise file attribute changes  */
+        /* might not yet have propagated to "other" hard links of the same file. */
+        /* This also gives us an opportunity to determine the number of links.   */
+        HANDLE handle = CreateFileA(path, 0, 0, NULL, OPEN_EXISTING, 0, NULL);
+        if (handle != INVALID_HANDLE_VALUE) {
+            BY_HANDLE_FILE_INFORMATION bhi;
+            if (GetFileInformationByHandle(handle, &bhi))
+                nlink = bhi.nNumberOfLinks;
+            CloseHandle(handle);
+        }
     }
 
     /* path will be mapped correctly above */
@@ -1245,6 +1480,10 @@ win32_stat(const char *path, Stat_t *sbuf)
                return -1;
            }
        }
+        if (expect_dir && !S_ISDIR(sbuf->st_mode)) {
+            errno = ENOTDIR;
+            return -1;
+        }
 #ifdef __BORLANDC__
        if (S_ISDIR(sbuf->st_mode))
            sbuf->st_mode |= S_IWRITE | S_IEXEC;
@@ -1373,6 +1612,71 @@ win32_longpath(char *path)
     return path;
 }
 
+static void
+out_of_memory()
+{
+    if (PL_curinterp) {
+        dTHX;
+        /* Can't use PerlIO to write as it allocates memory */
+        PerlLIO_write(PerlIO_fileno(Perl_error_log),
+                      PL_no_mem, strlen(PL_no_mem));
+        my_exit(1);
+    }
+    exit(1);
+}
+
+/* The win32_ansipath() function takes a Unicode filename and converts it
+ * into the current Windows codepage. If some characters cannot be mapped,
+ * then it will convert the short name instead.
+ *
+ * The buffer to the ansi pathname must be freed with win32_free() when it
+ * it no longer needed.
+ *
+ * The argument to win32_ansipath() must exist before this function is
+ * called; otherwise there is no way to determine the short path name.
+ *
+ * Ideas for future refinement:
+ * - Only convert those segments of the path that are not in the current
+ *   codepage, but leave the other segments in their long form.
+ * - If the resulting name is longer than MAX_PATH, start converting
+ *   additional path segments into short names until the full name
+ *   is shorter than MAX_PATH.  Shorten the filename part last!
+ */
+DllExport char *
+win32_ansipath(const WCHAR *widename)
+{
+    char *name;
+    BOOL use_default = FALSE;
+    size_t widelen = wcslen(widename)+1;
+    int len = WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS, widename, widelen,
+                                  NULL, 0, NULL, NULL);
+    name = win32_malloc(len);
+    if (!name)
+        out_of_memory();
+
+    WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS, widename, widelen,
+                        name, len, NULL, &use_default);
+    if (use_default) {
+        DWORD shortlen = GetShortPathNameW(widename, NULL, 0);
+        if (shortlen) {
+            WCHAR *shortname = win32_malloc(shortlen*sizeof(WCHAR));
+            if (!shortname)
+                out_of_memory();
+            shortlen = GetShortPathNameW(widename, shortname, shortlen)+1;
+
+            len = WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS, shortname, shortlen,
+                                      NULL, 0, NULL, NULL);
+            name = win32_realloc(name, len);
+            if (!name)
+                out_of_memory();
+            WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS, shortname, shortlen,
+                                name, len, NULL, NULL);
+            win32_free(shortname);
+        }
+    }
+    return name;
+}
+
 DllExport char *
 win32_getenv(const char *name)
 {
@@ -1764,8 +2068,19 @@ win32_async_check(pTHX)
 
     w32_poll_count = 0;
 
-    if (hwnd == INVALID_HANDLE_VALUE)
+    if (hwnd == INVALID_HANDLE_VALUE) {
+        /* Call PeekMessage() to mark all pending messages in the queue as "old".
+         * This is necessary when we are being called by win32_msgwait() to
+         * make sure MsgWaitForMultipleObjects() stops reporting the same waiting
+         * message over and over.  An example how this can happen is when
+         * Perl is calling win32_waitpid() inside a GUI application and the GUI
+         * is generating messages before the process terminated.
+         */
+        PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE|PM_NOYIELD);
+        if (PL_sig_pending)
+            despatch_signals();
         return 1;
+    }
 
     /* Passing PeekMessage -1 as HWND (2nd arg) only get PostThreadMessage() messages
      * and ignores window messages - should co-exist better with windows apps e.g. Tk
@@ -1828,7 +2143,7 @@ win32_msgwait(pTHX_ DWORD count, LPHANDLE handles, DWORD timeout, LPDWORD result
        timeout += ticks;
     }
     while (1) {
-       DWORD result = MsgWaitForMultipleObjects(count,handles,FALSE,timeout-ticks, QS_ALLEVENTS);
+       DWORD result = MsgWaitForMultipleObjects(count,handles,FALSE,timeout-ticks, QS_POSTMESSAGE|QS_TIMER);
        if (resultp)
           *resultp = result;
        if (result == WAIT_TIMEOUT) {
@@ -2695,16 +3010,16 @@ win32_popen(const char *command, const char *mode)
     if (win32_pipe(p, 512, ourmode) == -1)
         return NULL;
 
-    /* save current stdfd */
-    if ((oldfd = win32_dup(stdfd)) == -1)
-        goto cleanup;
-
     /* save the old std handle (this needs to happen before the
      * dup2(), since that might call SetStdHandle() too) */
     OP_REFCNT_LOCK;
     lock_held = 1;
     old_h = GetStdHandle(nhandle);
 
+    /* save current stdfd */
+    if ((oldfd = win32_dup(stdfd)) == -1)
+        goto cleanup;
+
     /* make stdfd go to child end of pipe (implicitly closes stdfd) */
     /* stdfd will be inherited by the child */
     if (win32_dup2(p[child], stdfd) == -1)
@@ -2726,6 +3041,9 @@ win32_popen(const char *command, const char *mode)
        if (win32_dup2(oldfd, stdfd) == -1)
            goto cleanup;
 
+       /* close saved handle */
+       win32_close(oldfd);
+
        /* restore the old std handle (this needs to happen after the
         * dup2(), since that might call SetStdHandle() too */
        if (lock_held) {
@@ -2734,9 +3052,6 @@ win32_popen(const char *command, const char *mode)
            lock_held = 0;
        }
 
-       /* close saved handle */
-       win32_close(oldfd);
-
        LOCK_FDPID_MUTEX;
        sv_setiv(*av_fetch(w32_fdpid, p[parent], TRUE), childpid);
        UNLOCK_FDPID_MUTEX;
@@ -2752,15 +3067,15 @@ cleanup:
     /* we don't need to check for errors here */
     win32_close(p[0]);
     win32_close(p[1]);
+    if (oldfd != -1) {
+        win32_dup2(oldfd, stdfd);
+        win32_close(oldfd);
+    }
     if (lock_held) {
        SetStdHandle(nhandle, old_h);
        OP_REFCNT_UNLOCK;
        lock_held = 0;
     }
-    if (oldfd != -1) {
-        win32_dup2(oldfd, stdfd);
-        win32_close(oldfd);
-    }
     return (NULL);
 
 #endif /* USE_RTL_POPEN */
@@ -2789,6 +3104,7 @@ win32_pclose(PerlIO *pf)
        childpid = 0;
 
     if (!childpid) {
+        UNLOCK_FDPID_MUTEX;
        errno = EBADF;
         return -1;
     }
@@ -4220,11 +4536,6 @@ win32_dynaload(const char* filename)
     return LoadLibraryExA(PerlDir_mapA(filename), NULL, LOAD_WITH_ALTERED_SEARCH_PATH);
 }
 
-/*
- * Extras.
- */
-
-static
 XS(w32_SetChildShowWindow)
 {
     dXSARGS;
@@ -4250,509 +4561,22 @@ XS(w32_SetChildShowWindow)
     XSRETURN(1);
 }
 
-static
-XS(w32_GetCwd)
-{
-    dXSARGS;
-    /* Make the host for current directory */
-    char* ptr = PerlEnv_get_childdir();
-    /*
-     * If ptr != Nullch
-     *   then it worked, set PV valid,
-     *   else return 'undef'
-     */
-    if (ptr) {
-       SV *sv = sv_newmortal();
-       sv_setpv(sv, ptr);
-       PerlEnv_free_childdir(ptr);
-
-#ifndef INCOMPLETE_TAINTS
-       SvTAINTED_on(sv);
-#endif
-
-       EXTEND(SP,1);
-       SvPOK_on(sv);
-       ST(0) = sv;
-       XSRETURN(1);
-    }
-    XSRETURN_UNDEF;
-}
-
-static
-XS(w32_SetCwd)
-{
-    dXSARGS;
-    if (items != 1)
-       Perl_croak(aTHX_ "usage: Win32::SetCurrentDirectory($cwd)");
-    if (!PerlDir_chdir(SvPV_nolen(ST(0))))
-       XSRETURN_YES;
-
-    XSRETURN_NO;
-}
-
-static
-XS(w32_GetNextAvailDrive)
-{
-    dXSARGS;
-    char ix = 'C';
-    char root[] = "_:\\";
-
-    EXTEND(SP,1);
-    while (ix <= 'Z') {
-       root[0] = ix++;
-       if (GetDriveType(root) == 1) {
-           root[2] = '\0';
-           XSRETURN_PV(root);
-       }
-    }
-    XSRETURN_UNDEF;
-}
-
-static
-XS(w32_GetLastError)
-{
-    dXSARGS;
-    EXTEND(SP,1);
-    XSRETURN_IV(GetLastError());
-}
-
-static
-XS(w32_SetLastError)
-{
-    dXSARGS;
-    if (items != 1)
-       Perl_croak(aTHX_ "usage: Win32::SetLastError($error)");
-    SetLastError(SvIV(ST(0)));
-    XSRETURN_EMPTY;
-}
-
-static
-XS(w32_LoginName)
-{
-    dXSARGS;
-    char *name = w32_getlogin_buffer;
-    DWORD size = sizeof(w32_getlogin_buffer);
-    EXTEND(SP,1);
-    if (GetUserName(name,&size)) {
-       /* size includes NULL */
-       ST(0) = sv_2mortal(newSVpvn(name,size-1));
-       XSRETURN(1);
-    }
-    XSRETURN_UNDEF;
-}
-
-static
-XS(w32_NodeName)
-{
-    dXSARGS;
-    char name[MAX_COMPUTERNAME_LENGTH+1];
-    DWORD size = sizeof(name);
-    EXTEND(SP,1);
-    if (GetComputerName(name,&size)) {
-       /* size does NOT include NULL :-( */
-       ST(0) = sv_2mortal(newSVpvn(name,size));
-       XSRETURN(1);
-    }
-    XSRETURN_UNDEF;
-}
-
-
-static
-XS(w32_DomainName)
-{
-    dXSARGS;
-    HINSTANCE hNetApi32 = LoadLibrary("netapi32.dll");
-    DWORD (__stdcall *pfnNetApiBufferFree)(LPVOID Buffer);
-    DWORD (__stdcall *pfnNetWkstaGetInfo)(LPWSTR servername, DWORD level,
-                                         void *bufptr);
-
-    if (hNetApi32) {
-       pfnNetApiBufferFree = (DWORD (__stdcall *)(void *))
-           GetProcAddress(hNetApi32, "NetApiBufferFree");
-       pfnNetWkstaGetInfo = (DWORD (__stdcall *)(LPWSTR, DWORD, void *))
-           GetProcAddress(hNetApi32, "NetWkstaGetInfo");
-    }
-    EXTEND(SP,1);
-    if (hNetApi32 && pfnNetWkstaGetInfo && pfnNetApiBufferFree) {
-       /* this way is more reliable, in case user has a local account. */
-       char dname[256];
-       DWORD dnamelen = sizeof(dname);
-       struct {
-           DWORD   wki100_platform_id;
-           LPWSTR  wki100_computername;
-           LPWSTR  wki100_langroup;
-           DWORD   wki100_ver_major;
-           DWORD   wki100_ver_minor;
-       } *pwi;
-       /* NERR_Success *is* 0*/
-       if (0 == pfnNetWkstaGetInfo(NULL, 100, &pwi)) {
-           if (pwi->wki100_langroup && *(pwi->wki100_langroup)) {
-               WideCharToMultiByte(CP_ACP, 0, pwi->wki100_langroup,
-                                   -1, (LPSTR)dname, dnamelen, NULL, NULL);
-           }
-           else {
-               WideCharToMultiByte(CP_ACP, 0, pwi->wki100_computername,
-                                   -1, (LPSTR)dname, dnamelen, NULL, NULL);
-           }
-           pfnNetApiBufferFree(pwi);
-           FreeLibrary(hNetApi32);
-           XSRETURN_PV(dname);
-       }
-       FreeLibrary(hNetApi32);
-    }
-    else {
-       /* Win95 doesn't have NetWksta*(), so do it the old way */
-       char name[256];
-       DWORD size = sizeof(name);
-       if (hNetApi32)
-           FreeLibrary(hNetApi32);
-       if (GetUserName(name,&size)) {
-           char sid[ONE_K_BUFSIZE];
-           DWORD sidlen = sizeof(sid);
-           char dname[256];
-           DWORD dnamelen = sizeof(dname);
-           SID_NAME_USE snu;
-           if (LookupAccountName(NULL, name, (PSID)&sid, &sidlen,
-                                 dname, &dnamelen, &snu)) {
-               XSRETURN_PV(dname);             /* all that for this */
-           }
-       }
-    }
-    XSRETURN_UNDEF;
-}
-
-static
-XS(w32_FsType)
-{
-    dXSARGS;
-    char fsname[256];
-    DWORD flags, filecomplen;
-    if (GetVolumeInformation(NULL, NULL, 0, NULL, &filecomplen,
-                        &flags, fsname, sizeof(fsname))) {
-       if (GIMME_V == G_ARRAY) {
-           XPUSHs(sv_2mortal(newSVpvn(fsname,strlen(fsname))));
-           XPUSHs(sv_2mortal(newSViv(flags)));
-           XPUSHs(sv_2mortal(newSViv(filecomplen)));
-           PUTBACK;
-           return;
-       }
-       EXTEND(SP,1);
-       XSRETURN_PV(fsname);
-    }
-    XSRETURN_EMPTY;
-}
-
-static
-XS(w32_GetOSVersion)
-{
-    dXSARGS;
-    /* Use explicit struct definition because wSuiteMask and
-     * wProductType are not defined in the VC++ 6.0 headers.
-     * WORD type has been replaced by unsigned short because
-     * WORD is already used by Perl itself.
-     */
-    struct {
-        DWORD dwOSVersionInfoSize;
-        DWORD dwMajorVersion;
-        DWORD dwMinorVersion;
-        DWORD dwBuildNumber;
-        DWORD dwPlatformId;
-        CHAR  szCSDVersion[128];
-        unsigned short wServicePackMajor;
-        unsigned short wServicePackMinor;
-        unsigned short wSuiteMask;
-        BYTE  wProductType;
-        BYTE  wReserved;
-    }   osver;
-    BOOL bEx = TRUE;
-
-    osver.dwOSVersionInfoSize = sizeof(osver);
-    if (!GetVersionExA((OSVERSIONINFOA*)&osver)) {
-        bEx = FALSE;
-        osver.dwOSVersionInfoSize = sizeof(OSVERSIONINFOA);
-        if (!GetVersionExA((OSVERSIONINFOA*)&osver)) {
-            XSRETURN_EMPTY;
-        }
-    }
-    if (GIMME_V == G_SCALAR) {
-        XSRETURN_IV(osver.dwPlatformId);
-    }
-    XPUSHs(newSVpvn(osver.szCSDVersion, strlen(osver.szCSDVersion)));
-
-    XPUSHs(newSViv(osver.dwMajorVersion));
-    XPUSHs(newSViv(osver.dwMinorVersion));
-    XPUSHs(newSViv(osver.dwBuildNumber));
-    XPUSHs(newSViv(osver.dwPlatformId));
-    if (bEx) {
-        XPUSHs(newSViv(osver.wServicePackMajor));
-        XPUSHs(newSViv(osver.wServicePackMinor));
-        XPUSHs(newSViv(osver.wSuiteMask));
-        XPUSHs(newSViv(osver.wProductType));
-    }
-    PUTBACK;
-}
-
-static
-XS(w32_IsWinNT)
-{
-    dXSARGS;
-    EXTEND(SP,1);
-    XSRETURN_IV(IsWinNT());
-}
-
-static
-XS(w32_IsWin95)
-{
-    dXSARGS;
-    EXTEND(SP,1);
-    XSRETURN_IV(IsWin95());
-}
-
-static
-XS(w32_FormatMessage)
-{
-    dXSARGS;
-    DWORD source = 0;
-    char msgbuf[ONE_K_BUFSIZE];
-
-    if (items != 1)
-       Perl_croak(aTHX_ "usage: Win32::FormatMessage($errno)");
-
-    if (FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM,
-                       &source, SvIV(ST(0)), 0,
-                       msgbuf, sizeof(msgbuf)-1, NULL))
-    {
-        XSRETURN_PV(msgbuf);
-    }
-
-    XSRETURN_UNDEF;
-}
-
-static
-XS(w32_Spawn)
-{
-    dXSARGS;
-    char *cmd, *args;
-    void *env;
-    char *dir;
-    PROCESS_INFORMATION stProcInfo;
-    STARTUPINFO stStartInfo;
-    BOOL bSuccess = FALSE;
-
-    if (items != 3)
-       Perl_croak(aTHX_ "usage: Win32::Spawn($cmdName, $args, $PID)");
-
-    cmd = SvPV_nolen(ST(0));
-    args = SvPV_nolen(ST(1));
-
-    env = PerlEnv_get_childenv();
-    dir = PerlEnv_get_childdir();
-
-    memset(&stStartInfo, 0, sizeof(stStartInfo));   /* Clear the block */
-    stStartInfo.cb = sizeof(stStartInfo);          /* Set the structure size */
-    stStartInfo.dwFlags = STARTF_USESHOWWINDOW;            /* Enable wShowWindow control */
-    stStartInfo.wShowWindow = SW_SHOWMINNOACTIVE;   /* Start min (normal) */
-
-    if (CreateProcess(
-               cmd,                    /* Image path */
-               args,                   /* Arguments for command line */
-               NULL,                   /* Default process security */
-               NULL,                   /* Default thread security */
-               FALSE,                  /* Must be TRUE to use std handles */
-               NORMAL_PRIORITY_CLASS,  /* No special scheduling */
-               env,                    /* Inherit our environment block */
-               dir,                    /* Inherit our currrent directory */
-               &stStartInfo,           /* -> Startup info */
-               &stProcInfo))           /* <- Process info (if OK) */
-    {
-       int pid = (int)stProcInfo.dwProcessId;
-       if (IsWin95() && pid < 0)
-           pid = -pid;
-       sv_setiv(ST(2), pid);
-       CloseHandle(stProcInfo.hThread);/* library source code does this. */
-       bSuccess = TRUE;
-    }
-    PerlEnv_free_childenv(env);
-    PerlEnv_free_childdir(dir);
-    XSRETURN_IV(bSuccess);
-}
-
-static
-XS(w32_GetTickCount)
-{
-    dXSARGS;
-    DWORD msec = GetTickCount();
-    EXTEND(SP,1);
-    if ((IV)msec > 0)
-       XSRETURN_IV(msec);
-    XSRETURN_NV(msec);
-}
-
-static
-XS(w32_GetShortPathName)
-{
-    dXSARGS;
-    SV *shortpath;
-    DWORD len;
-
-    if (items != 1)
-       Perl_croak(aTHX_ "usage: Win32::GetShortPathName($longPathName)");
-
-    shortpath = sv_mortalcopy(ST(0));
-    SvUPGRADE(shortpath, SVt_PV);
-    if (!SvPVX(shortpath) || !SvLEN(shortpath))
-        XSRETURN_UNDEF;
-
-    /* src == target is allowed */
-    do {
-       len = GetShortPathName(SvPVX(shortpath),
-                              SvPVX(shortpath),
-                              SvLEN(shortpath));
-    } while (len >= SvLEN(shortpath) && sv_grow(shortpath,len+1));
-    if (len) {
-       SvCUR_set(shortpath,len);
-       *SvEND(shortpath) = '\0';
-       ST(0) = shortpath;
-       XSRETURN(1);
-    }
-    XSRETURN_UNDEF;
-}
-
-static
-XS(w32_GetFullPathName)
-{
-    dXSARGS;
-    SV *filename;
-    SV *fullpath;
-    char *filepart;
-    DWORD len;
-    STRLEN filename_len;
-    char *filename_p;
-
-    if (items != 1)
-       Perl_croak(aTHX_ "usage: Win32::GetFullPathName($filename)");
-
-    filename = ST(0);
-    filename_p = SvPV(filename, filename_len);
-    fullpath = sv_2mortal(newSVpvn(filename_p, filename_len));
-    if (!SvPVX(fullpath) || !SvLEN(fullpath))
-        XSRETURN_UNDEF;
-
-    do {
-       len = GetFullPathName(SvPVX(filename),
-                             SvLEN(fullpath),
-                             SvPVX(fullpath),
-                             &filepart);
-    } while (len >= SvLEN(fullpath) && sv_grow(fullpath,len+1));
-    if (len) {
-       if (GIMME_V == G_ARRAY) {
-           EXTEND(SP,1);
-           if (filepart) {
-               XST_mPV(1,filepart);
-               len = filepart - SvPVX(fullpath);
-           }
-           else {
-               XST_mPVN(1,"",0);
-           }
-           items = 2;
-       }
-       SvCUR_set(fullpath,len);
-       *SvEND(fullpath) = '\0';
-       ST(0) = fullpath;
-       XSRETURN(items);
-    }
-    XSRETURN_EMPTY;
-}
-
-static
-XS(w32_GetLongPathName)
-{
-    dXSARGS;
-    SV *path;
-    char tmpbuf[MAX_PATH+1];
-    char *pathstr;
-    STRLEN len;
-
-    if (items != 1)
-       Perl_croak(aTHX_ "usage: Win32::GetLongPathName($pathname)");
-
-    path = ST(0);
-    pathstr = SvPV(path,len);
-    strcpy(tmpbuf, pathstr);
-    pathstr = win32_longpath(tmpbuf);
-    if (pathstr) {
-       ST(0) = sv_2mortal(newSVpvn(pathstr, strlen(pathstr)));
-       XSRETURN(1);
-    }
-    XSRETURN_EMPTY;
-}
-
-static
-XS(w32_Sleep)
-{
-    dXSARGS;
-    if (items != 1)
-       Perl_croak(aTHX_ "usage: Win32::Sleep($milliseconds)");
-    Sleep(SvIV(ST(0)));
-    XSRETURN_YES;
-}
-
-static
-XS(w32_CopyFile)
-{
-    dXSARGS;
-    BOOL bResult;
-    char szSourceFile[MAX_PATH+1];
-
-    if (items != 3)
-       Perl_croak(aTHX_ "usage: Win32::CopyFile($from, $to, $overwrite)");
-    strcpy(szSourceFile, PerlDir_mapA(SvPV_nolen(ST(0))));
-    bResult = CopyFileA(szSourceFile, PerlDir_mapA(SvPV_nolen(ST(1))), !SvTRUE(ST(2)));
-    if (bResult)
-       XSRETURN_YES;
-    XSRETURN_NO;
-}
-
 void
 Perl_init_os_extras(void)
 {
     dTHX;
     char *file = __FILE__;
+    CV *cv;
     dXSUB_SYS;
 
-    /* these names are Activeware compatible */
-    newXS("Win32::GetCwd", w32_GetCwd, file);
-    newXS("Win32::SetCwd", w32_SetCwd, file);
-    newXS("Win32::GetNextAvailDrive", w32_GetNextAvailDrive, file);
-    newXS("Win32::GetLastError", w32_GetLastError, file);
-    newXS("Win32::SetLastError", w32_SetLastError, file);
-    newXS("Win32::LoginName", w32_LoginName, file);
-    newXS("Win32::NodeName", w32_NodeName, file);
-    newXS("Win32::DomainName", w32_DomainName, file);
-    newXS("Win32::FsType", w32_FsType, file);
-    newXS("Win32::GetOSVersion", w32_GetOSVersion, file);
-    newXS("Win32::IsWinNT", w32_IsWinNT, file);
-    newXS("Win32::IsWin95", w32_IsWin95, file);
-    newXS("Win32::FormatMessage", w32_FormatMessage, file);
-    newXS("Win32::Spawn", w32_Spawn, file);
-    newXS("Win32::GetTickCount", w32_GetTickCount, file);
-    newXS("Win32::GetShortPathName", w32_GetShortPathName, file);
-    newXS("Win32::GetFullPathName", w32_GetFullPathName, file);
-    newXS("Win32::GetLongPathName", w32_GetLongPathName, file);
-    newXS("Win32::CopyFile", w32_CopyFile, file);
-    newXS("Win32::Sleep", w32_Sleep, file);
-    newXS("Win32::SetChildShowWindow", w32_SetChildShowWindow, file);
+    /* load Win32 CORE stubs, assuming Win32CORE was statically linked */
+    if ((cv = get_cv("Win32CORE::bootstrap", 0))) {
+       dSP;
+       PUSHMARK(SP);
+       (void)call_sv((SV *)cv, G_EVAL|G_DISCARD|G_VOID);
+    }
 
-    /* XXX Bloat Alert! The following Activeware preloads really
-     * ought to be part of Win32::Sys::*, so they're not included
-     * here.
-     */
-    /* LookupAccountName
-     * LookupAccountSID
-     * InitiateSystemShutdown
-     * AbortSystemShutdown
-     * ExpandEnvrironmentStrings
-     */
+    newXS("Win32::SetChildShowWindow", w32_SetChildShowWindow, file);
 }
 
 void *
@@ -4824,9 +4648,119 @@ win32_ctrlhandler(DWORD dwCtrlType)
 }
 
 
+#if _MSC_VER >= 1400
+#  include <crtdbg.h>
+#endif
+
+static void
+ansify_path(void)
+{
+    size_t len;
+    char *ansi_path;
+    WCHAR *wide_path;
+    WCHAR *wide_dir;
+
+    /* there is no Unicode environment on Windows 9X */
+    if (IsWin95())
+        return;
+
+    /* fetch Unicode version of PATH */
+    len = 2000;
+    wide_path = win32_malloc(len*sizeof(WCHAR));
+    while (wide_path) {
+        size_t newlen = GetEnvironmentVariableW(L"PATH", wide_path, len);
+        if (newlen < len)
+            break;
+        len = newlen;
+        wide_path = win32_realloc(wide_path, len*sizeof(WCHAR));
+    }
+    if (!wide_path)
+        return;
+
+    /* convert to ANSI pathnames */
+    wide_dir = wide_path;
+    ansi_path = NULL;
+    while (wide_dir) {
+        WCHAR *sep = wcschr(wide_dir, ';');
+        char *ansi_dir;
+        size_t ansi_len;
+        size_t wide_len;
+
+        if (sep)
+            *sep++ = '\0';
+
+        /* remove quotes around pathname */
+        if (*wide_dir == '"')
+            ++wide_dir;
+        wide_len = wcslen(wide_dir);
+        if (wide_len && wide_dir[wide_len-1] == '"')
+            wide_dir[wide_len-1] = '\0';
+
+        /* append ansi_dir to ansi_path */
+        ansi_dir = win32_ansipath(wide_dir);
+        ansi_len = strlen(ansi_dir);
+        if (ansi_path) {
+            size_t newlen = len + 1 + ansi_len;
+            ansi_path = win32_realloc(ansi_path, newlen+1);
+            if (!ansi_path)
+                break;
+            ansi_path[len] = ';';
+            memcpy(ansi_path+len+1, ansi_dir, ansi_len+1);
+            len = newlen;
+        }
+        else {
+            len = ansi_len;
+            ansi_path = win32_malloc(5+len+1);
+            if (!ansi_path)
+                break;
+            memcpy(ansi_path, "PATH=", 5);
+            memcpy(ansi_path+5, ansi_dir, len+1);
+            len += 5;
+        }
+        win32_free(ansi_dir);
+        wide_dir = sep;
+    }
+
+    if (ansi_path) {
+        /* Update C RTL environ array.  This will only have full effect if
+         * perl_parse() is later called with `environ` as the `env` argument.
+         * Otherwise S_init_postdump_symbols() will overwrite PATH again.
+         *
+         * We do have to ansify() the PATH before Perl has been fully
+         * initialized because S_find_script() uses the PATH when perl
+         * is being invoked with the -S option.  This happens before %ENV
+         * is initialized in S_init_postdump_symbols().
+         *
+         * XXX Is this a bug? Should S_find_script() use the environment
+         * XXX passed in the `env` arg to parse_perl()?
+         */
+        putenv(ansi_path);
+        /* Keep system environment in sync because S_init_postdump_symbols()
+         * will not call mg_set() if it initializes %ENV from `environ`.
+         */
+        SetEnvironmentVariableA("PATH", ansi_path+5);
+        /* We are intentionally leaking the ansi_path string here because
+         * the Borland runtime library puts it directly into the environ
+         * array.  The Microsoft runtime library seems to make a copy,
+         * but will leak the copy should it be replaced again later.
+         * Since this code is only called once during PERL_SYS_INIT this
+         * shouldn't really matter.
+         */
+    }
+    win32_free(wide_path);
+}
+
 void
 Perl_win32_init(int *argcp, char ***argvp)
 {
+    HMODULE module;
+
+#if _MSC_VER >= 1400
+    _invalid_parameter_handler oldHandler, newHandler;
+    newHandler = my_invalid_parameter_handler;
+    oldHandler = _set_invalid_parameter_handler(newHandler);
+    _CrtSetReportMode(_CRT_ASSERT, 0);
+#endif
     /* Disable floating point errors, Perl will trap the ones we
      * care about.  VC++ RTL defaults to switching these off
      * already, but the Borland RTL doesn't.  Since we don't
@@ -4837,12 +4771,32 @@ Perl_win32_init(int *argcp, char ***argvp)
     _control87(MCW_EM, MCW_EM);
 #endif
     MALLOC_INIT;
+
+    module = GetModuleHandle("ntdll.dll");
+    if (module) {
+        *(FARPROC*)&pfnZwQuerySystemInformation = GetProcAddress(module, "ZwQuerySystemInformation");
+    }
+
+    module = GetModuleHandle("kernel32.dll");
+    if (module) {
+        *(FARPROC*)&pfnCreateToolhelp32Snapshot = GetProcAddress(module, "CreateToolhelp32Snapshot");
+        *(FARPROC*)&pfnProcess32First           = GetProcAddress(module, "Process32First");
+        *(FARPROC*)&pfnProcess32Next            = GetProcAddress(module, "Process32Next");
+    }
+
+    g_osver.dwOSVersionInfoSize = sizeof(g_osver);
+    GetVersionEx(&g_osver);
+
+    ansify_path();
 }
 
 void
 Perl_win32_term(void)
 {
+    dTHX;
+    HINTS_REFCNT_TERM;
     OP_REFCNT_TERM;
+    PERLIO_TERM;
     MALLOC_TERM;
 }
 
@@ -4877,7 +4831,6 @@ win32_signal(int sig, Sighandler_t subcode)
 
 #ifdef HAVE_INTERP_INTERN
 
-
 static void
 win32_csighandler(int sig)
 {
@@ -4905,16 +4858,17 @@ win32_create_message_window()
     return CreateWindow("Static", "", 0, 0, 0, 0, 0, HWND_MESSAGE, 0, 0, NULL);
 }
 
+#if defined(__MINGW32__) && defined(__cplusplus)
+#define CAST_HWND__(x) (HWND__*)(x)
+#else
+#define CAST_HWND__(x) x
+#endif
+
 void
 Perl_sys_intern_init(pTHX)
 {
     int i;
 
-    if (g_osver.dwOSVersionInfoSize == 0) {
-        g_osver.dwOSVersionInfoSize = sizeof(g_osver);
-        GetVersionEx(&g_osver);
-    }
-
     w32_perlshell_tokens       = Nullch;
     w32_perlshell_vec          = (char**)NULL;
     w32_perlshell_items                = 0;
@@ -4927,12 +4881,12 @@ Perl_sys_intern_init(pTHX)
     w32_num_pseudo_children    = 0;
 #  endif
     w32_timerid                 = 0;
-    w32_message_hwnd            = INVALID_HANDLE_VALUE;
+    w32_message_hwnd            = CAST_HWND__(INVALID_HANDLE_VALUE);
     w32_poll_count              = 0;
     for (i=0; i < SIG_SIZE; i++) {
        w32_sighandler[i] = SIG_DFL;
     }
-#  ifdef MULTIPLICTY
+#  ifdef MULTIPLICITY
     if (my_perl == PL_curinterp) {
 #  else
     {
@@ -4983,7 +4937,7 @@ Perl_sys_intern_dup(pTHX_ struct interp_intern *src, struct interp_intern *dst)
     dst->pseudo_id             = 0;
     Newxz(dst->pseudo_children, 1, pseudo_child_tab);
     dst->timerid                = 0;
-    dst->message_hwnd          = INVALID_HANDLE_VALUE;
+    dst->message_hwnd          = CAST_HWND__(INVALID_HANDLE_VALUE);
     dst->poll_count             = 0;
     Copy(src->sigtable,dst->sigtable,SIG_SIZE,Sighandler_t);
 }