commit 63eac1592700e550d7a8e9b5ef1f77cadac9a020
author Guido van Rossum <guido@python.org> Wed May 09 23:36:14 2007 +0000
committer Guido van Rossum <guido@python.org> Wed May 09 23:36:14 2007 +0000
tree cb49290607519554517e183ed1a2ab45fc69a971
parent d70539abef79c2ae4ab0c0319a1ee47c10f048dc

The NULL pointer for empty strings turns out to be a pain.
At least for the buffer API, return "" in that case.

Objects/bytesobject.c

diff --git a/Objects/bytesobject.c b/Objects/bytesobject.c
index a07f9e7..2cdaf37 100644
--- a/Objects/bytesobject.c
+++ b/Objects/bytesobject.c
@@ -950,7 +950,10 @@
                         "accessing non-existent bytes segment");
         return -1;
     }
-    *ptr = (void *)self->ob_bytes;
+    if (self->ob_bytes == NULL)
+        *ptr = "";
+    else
+        *ptr = self->ob_bytes;
     return self->ob_size;
 }