Index: bash-4.4/lib/glob/sm_loop.c
===================================================================
--- bash-4.4.orig/lib/glob/sm_loop.c
+++ bash-4.4/lib/glob/sm_loop.c
@@ -330,6 +330,12 @@ PARSE_COLLSYM (p, vp)
   for (pc = 0; p[pc]; pc++)
     if (p[pc] == L('.') && p[pc+1] == L(']'))
       break;
+   if (p[pc] == 0)
+    {
+      if (vp)
+	*vp = INVALID;
+      return (p + pc);
+    }
    val = COLLSYM (p, pc);
    if (vp)
      *vp = val;
@@ -483,6 +489,9 @@ BRACKMATCH (p, test, flags)
       c = *p++;
       c = FOLD (c);
 
+      if (c == L('\0'))
+	return ((test == L('[')) ? savep : (CHAR *)0);
+
       if ((flags & FNM_PATHNAME) && c == L('/'))
 	/* [/] can never match when matching a pathname.  */
 	return (CHAR *)0;
Index: bash-4.4/patchlevel.h
===================================================================
--- bash-4.4.orig/patchlevel.h
+++ bash-4.4/patchlevel.h
@@ -25,6 +25,6 @@
    regexp `^#define[ 	]*PATCHLEVEL', since that's what support/mkversion.sh
    looks for to find the patch level (for the sccs version string). */
 
-#define PATCHLEVEL 2
+#define PATCHLEVEL 3
 
 #endif /* _PATCHLEVEL_H_ */