Bash-5.2 patch 9: allow @ and * to be used as associative array keys in arithmetic expressions

expr.c

@@ -1168,6 +1168,8 @@ expr_streval (tok, e, lvalue)
   /* [[[[[ */
 #if defined (ARRAY_VARS)
   aflag = tflag;	/* use a different variable for now */
+  if (shell_compatibility_level > 51)
+    aflag |= AV_ATSTARKEYS;
   v = (e == ']') ? array_variable_part (tok, tflag, (char **)0, (int *)0) : find_variable (tok);
 #else
   v = find_variable (tok);

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 8
+#define PATCHLEVEL 9
 
 #endif /* _PATCHLEVEL_H_ */