diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 93a0b93b4..2c18ff8e2 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,12 @@
+2005-12-05  Christopher Faylor  <cgf@timesys.com>
+
+	* dir.cc (readdir_workdir): Only fill out d_ino when linked into older
+	app.
+	* include/cygwin/version.h: Bump api minor number to 147, reflecting
+	obsolescence of d_ino.
+	(CYGWIN_VERSION_USER_API_VERSION_COMBINED): New convenience macro.
+	(CYGWIN_VERSION_CHECK_FOR_NEEDS_D_INO): New convenience macro.
+
 2005-12-05  Christopher Faylor  <cgf@timesys.com>
 
 	Remove unneeded whitespace.
diff --git a/winsup/cygwin/dir.cc b/winsup/cygwin/dir.cc
index 6faddf37b..a5ac1a2df 100644
--- a/winsup/cygwin/dir.cc
+++ b/winsup/cygwin/dir.cc
@@ -24,6 +24,8 @@ details. */
 #include "dtable.h"
 #include "cygheap.h"
 #include "cygtls.h"
+#include "perprocess.h"
+#include "cygwin/version.h"
 
 extern "C" int
 dirfd (DIR *dir)
@@ -99,43 +101,49 @@ readdir_worker (DIR *dir, dirent *de)
     }
 
   if (!res)
-    {
-      /* Compute d_ino by combining filename hash with the directory hash
-	 (which was stored in dir->__d_dirhash when opendir was called). */
-      if (de->d_name[0] == '.')
-	{
-	  if (de->d_name[1] == '\0')
-	    {
-	      de->d_ino = dir->__d_dirhash;
-	      dir->__flags |= dirent_saw_dot;
-	    }
-	  else if (de->d_name[1] != '.' || de->d_name[2] != '\0')
-	    goto hashit;
-	  else
-	    {
-	      dir->__flags |= dirent_saw_dot_dot;
-	      char *p, up[strlen (dir->__d_dirname) + 1];
-	      strcpy (up, dir->__d_dirname);
-	      if (!(p = strrchr (up, '\\')))
-		goto hashit;
-	      *p = '\0';
-	      if (!(p = strrchr (up, '\\')))
-		de->d_ino = hash_path_name (0, ".");
-	      else
-		{
-		  *p = '\0';
-		  de->d_ino = hash_path_name (0, up);
-		}
-	    }
-	}
-      else
-	{
-      hashit:
-	  __ino64_t dino = hash_path_name (dir->__d_dirhash, "\\");
-	  de->d_ino = hash_path_name (dino, de->d_name);
-	}
-      de->__ino32 = de->d_ino;	// for legacy applications
-    }
+    if (!CYGWIN_VERSION_CHECK_FOR_NEEDS_D_INO)
+      {
+	de->__deprecated_d_ino = 0;
+	de->__ino32 = 0;
+      }
+    else
+      {
+	/* Compute __deprecated_d_ino by combining filename hash with the directory hash
+	   (which was stored in dir->__d_dirhash when opendir was called). */
+	if (de->d_name[0] == '.')
+	  {
+	    if (de->d_name[1] == '\0')
+	      {
+		de->__deprecated_d_ino = dir->__d_dirhash;
+		dir->__flags |= dirent_saw_dot;
+	      }
+	    else if (de->d_name[1] != '.' || de->d_name[2] != '\0')
+	      goto hashit;
+	    else
+	      {
+		dir->__flags |= dirent_saw_dot_dot;
+		char *p, up[strlen (dir->__d_dirname) + 1];
+		strcpy (up, dir->__d_dirname);
+		if (!(p = strrchr (up, '\\')))
+		  goto hashit;
+		*p = '\0';
+		if (!(p = strrchr (up, '\\')))
+		  de->__deprecated_d_ino = hash_path_name (0, ".");
+		else
+		  {
+		    *p = '\0';
+		    de->__deprecated_d_ino = hash_path_name (0, up);
+		  }
+	      }
+	  }
+	else
+	  {
+	hashit:
+	    __ino64_t dino = hash_path_name (dir->__d_dirhash, "\\");
+	    de->__deprecated_d_ino = hash_path_name (dino, de->d_name);
+	  }
+	de->__ino32 = de->__deprecated_d_ino;	// for legacy applications
+      }
   return res;
 }
 
diff --git a/winsup/cygwin/include/cygwin/version.h b/winsup/cygwin/include/cygwin/version.h
index 9511d925a..d40dd8786 100644
--- a/winsup/cygwin/include/cygwin/version.h
+++ b/winsup/cygwin/include/cygwin/version.h
@@ -63,43 +63,38 @@ details. */
 
 #define CYGWIN_VERSION_DLL_BAD_SIGNAL_MASK	19005
 
+#define CYGWIN_VERSION_USER_API_VERSION_COMBINED \
+  CYGWIN_VERSION_DLL_MAKE_COMBINED (user_data->api_major, user_data->api_minor)
+
     /* API versions <= this had a termios structure whose members were
        too small to accomodate modern settings. */
 #define CYGWIN_VERSION_DLL_OLD_TERMIOS		5
 #define CYGWIN_VERSION_DLL_IS_OLD_TERMIOS \
-  (CYGWIN_VERSION_DLL_MAKE_COMBINED (user_data->api_major, user_data->api_minor) <= \
-  CYGWIN_VERSION_DLL_OLD_TERMIOS)
+  (CYGWIN_VERSION_USER_API_VERSION_COMBINED <= CYGWIN_VERSION_DLL_OLD_TERMIOS)
 
 #define CYGWIN_VERSION_DLL_MALLOC_ENV		28
      /* Old APIs had getc/putc macros that conflict with new CR/LF
 	handling in the stdio buffers */
 #define CYGWIN_VERSION_OLD_STDIO_CRLF_HANDLING \
-  (CYGWIN_VERSION_DLL_MAKE_COMBINED (user_data->api_major, user_data->api_minor) <= \
-  20)
+  (CYGWIN_VERSION_USER_API_VERSION_COMBINED <= 20)
 
 #define CYGWIN_VERSION_CHECK_FOR_S_IEXEC \
-  (CYGWIN_VERSION_DLL_MAKE_COMBINED (user_data->api_major, user_data->api_minor) >= \
-  36)
+  (CYGWIN_VERSION_USER_API_VERSION_COMBINED >= 36)
 
 #define CYGWIN_VERSION_CHECK_FOR_OLD_O_NONBLOCK \
-  (CYGWIN_VERSION_DLL_MAKE_COMBINED (user_data->api_major, user_data->api_minor) <= \
-  28)
+  (CYGWIN_VERSION_USER_API_VERSION_COMBINED <= 28)
 
 #define CYGWIN_VERSION_CHECK_FOR_USING_BIG_TYPES \
-  (CYGWIN_VERSION_DLL_MAKE_COMBINED (user_data->api_major, user_data->api_minor) >= \
-  79)
+  (CYGWIN_VERSION_USER_API_VERSION_COMBINED >= 79)
 
 #define CYGWIN_VERSION_CHECK_FOR_USING_ANCIENT_MSGHDR \
-  (CYGWIN_VERSION_DLL_MAKE_COMBINED (user_data->api_major, user_data->api_minor) <= \
- 138)
+  (CYGWIN_VERSION_USER_API_VERSION_COMBINED <= 138)
 
 #define CYGWIN_VERSION_CHECK_FOR_USING_WINSOCK1_VALUES \
-  (CYGWIN_VERSION_DLL_MAKE_COMBINED (user_data->api_major, user_data->api_minor) <= \
- 138)
+  (CYGWIN_VERSION_USER_API_VERSION_COMBINED <= 138)
 
-     /* We used to use the DLL major/minor to track
-	non-backward-compatible interface changes to the API.  Now we
-	use an API major/minor number for this purpose. */
+#define CYGWIN_VERSION_CHECK_FOR_NEEDS_D_INO \
+  (CYGWIN_VERSION_USER_API_VERSION_COMBINED < 147)
 
      /* API_MAJOR 0.0: Initial version.  API_MINOR changes:
 	1: Export cygwin32_ calls as cygwin_ as well.
@@ -285,12 +280,13 @@ details. */
       145: Add MAP_NORESERVE flag to mmap.
       146: Change SI_USER definition.  FIXME: Need to develop compatibility macro
            for this?
+      147: Eliminate problematic d_ino from dirent structure.
      */
 
      /* Note that we forgot to bump the api for ualarm, strtoll, strtoull */
 
 #define CYGWIN_VERSION_API_MAJOR 0
-#define CYGWIN_VERSION_API_MINOR 146
+#define CYGWIN_VERSION_API_MINOR 147
 
      /* There is also a compatibity version number associated with the
 	shared memory regions.  It is incremented when incompatible
diff --git a/winsup/cygwin/include/sys/dirent.h b/winsup/cygwin/include/sys/dirent.h
index 5eafbc27b..50cde2882 100644
--- a/winsup/cygwin/include/sys/dirent.h
+++ b/winsup/cygwin/include/sys/dirent.h
@@ -20,7 +20,7 @@
 struct dirent
 {
   long d_version;	/* Used since Cygwin 1.3.3. */
-  __ino64_t d_ino;	/* still junk but with more bits */
+  __ino64_t __deprecated_d_ino;	/* still junk but with more bits */
   long d_fd;		/* File descriptor of open directory.
 			   Used since Cygwin 1.3.3. */
   unsigned __ino32;