From b8f134e3c3a4bd2e88d56d97c22f52c2e1c50f76 Mon Sep 17 00:00:00 2001
From: Thomas Heller <theller@ctypes.org>
Date: Mon, 19 Jul 2004 09:45:46 +0000
Subject: [PATCH] The binary layout of cfgdata has changed, so the magic number
 has to change as well.  Add a comment explaining this.

---
 Lib/distutils/command/bdist_wininst.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/Lib/distutils/command/bdist_wininst.py b/Lib/distutils/command/bdist_wininst.py
index d91c08936c..79c95ae2ae 100644
--- a/Lib/distutils/command/bdist_wininst.py
+++ b/Lib/distutils/command/bdist_wininst.py
@@ -253,8 +253,14 @@ class bdist_wininst (Command):
             # empty pre-install script
             cfgdata = cfgdata + "\0"
         file.write(cfgdata)
+
+        # The 'magic number' 0x1234567B is used to make sure that the
+        # binary layout of 'cfgdata' is what the wininst.exe binary
+        # expects.  If the layout changes, increment that number, make
+        # the corresponding changes to the wininst.exe sources, and
+        # recompile them.
         header = struct.pack("<iii",
-                             0x1234567A,       # tag
+                             0x1234567B,       # tag
                              len(cfgdata),     # length
                              bitmaplen,        # number of bytes in bitmap
                              )
-- 
2.50.0