diff -r dee5afe5301f -r 3f74d0d4af4c src/gui/text/qzip.cpp
--- a/src/gui/text/qzip.cpp	Mon Mar 15 12:43:09 2010 +0200
+++ b/src/gui/text/qzip.cpp	Thu Apr 08 14:19:33 2010 +0300
@@ -54,10 +54,13 @@
 #include <zlib.h>
 
 #if defined(Q_OS_WIN)
-#undef S_IFREG
-#define S_IFREG 0100000
+#  undef S_IFREG
+#  define S_IFREG 0100000
+#  ifndef S_IFDIR
+#    define S_IFDIR 0040000
+#  endif
 #  ifndef S_ISDIR
-#    define S_ISDIR(x) ((x) & 0040000) > 0
+#    define S_ISDIR(x) ((x) & S_IFDIR) > 0
 #  endif
 #  ifndef S_ISREG
 #    define S_ISREG(x) ((x) & 0170000) == S_IFREG