diff -r b72c6db6890b -r 5dc02b23752f src/corelib/io/qfsfileengine.cpp
--- a/src/corelib/io/qfsfileengine.cpp	Wed Jun 23 19:07:03 2010 +0300
+++ b/src/corelib/io/qfsfileengine.cpp	Tue Jul 06 15:10:48 2010 +0300
@@ -56,6 +56,9 @@
 #endif
 #include <stdio.h>
 #include <stdlib.h>
+#if defined(Q_OS_MAC)
+# include <private/qcore_mac_p.h>
+#endif
 
 QT_BEGIN_NAMESPACE
 
@@ -123,8 +126,10 @@
     fileAttrib = INVALID_FILE_ATTRIBUTES;
     fileHandle = INVALID_HANDLE_VALUE;
     mapHandle = INVALID_HANDLE_VALUE;
+#ifndef Q_OS_WINCE
     cachedFd = -1;
 #endif
+#endif
 }
 
 /*!
@@ -143,11 +148,29 @@
     if (path.size() == 1 && path.at(0) == QLatin1Char('/'))
         return path;
 #endif
-    // Mac OS X 10.5.x doesn't support the realpath(X,0) extenstion we use here.
-#if defined(Q_OS_LINUX) || defined(Q_OS_SYMBIAN)
+#if defined(Q_OS_LINUX) || defined(Q_OS_SYMBIAN) || defined(Q_OS_MAC)
     // ... but Linux with uClibc does not have it
 #if !defined(__UCLIBC__)
-    char *ret = realpath(path.toLocal8Bit().constData(), (char*)0);
+    char *ret = 0;
+#if defined(Q_OS_MAC)
+    // Mac OS X 10.5.x doesn't support the realpath(X,0) extension we use here.
+    if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_6) {
+        ret = realpath(path.toLocal8Bit().constData(), (char*)0);
+    } else {
+        // on 10.5 we can use FSRef to resolve the file path.
+        FSRef fsref;
+        if (FSPathMakeRef((const UInt8 *)QDir::cleanPath(path).toUtf8().data(), &fsref, 0) == noErr) {
+            CFURLRef urlref = CFURLCreateFromFSRef(NULL, &fsref);
+            CFStringRef canonicalPath = CFURLCopyFileSystemPath(urlref, kCFURLPOSIXPathStyle);
+            QString ret = QCFString::toQString(canonicalPath);
+            CFRelease(canonicalPath);
+            CFRelease(urlref);
+            return ret;
+        }
+    }
+#else
+    ret = realpath(path.toLocal8Bit().constData(), (char*)0);
+#endif
     if (ret) {
         QString canonicalPath = QDir::cleanPath(QString::fromLocal8Bit(ret));
         free(ret);
@@ -1012,6 +1035,10 @@
   to store temporary files).
 */
 
+/*! \fn QAbstractFileEngine::FileFlags QFSFileEnginePrivate::getPermissions(QAbstractFileEngine::FileFlags type) const
+    \internal
+*/
+
 QT_END_NAMESPACE
 
 #endif // QT_NO_FSFILEENGINE