#define _hex_array_size 256
#define _hex_bad 99
-extern const char _hex_value[_hex_array_size];
+extern const unsigned char _hex_value[_hex_array_size];
extern void hex_init PARAMS ((void));
#define hex_p(c) (hex_value (c) != _hex_bad)
/* If you change this, note well: Some code relies on side effects in
the argument being performed exactly once. */
-#define hex_value(c) (_hex_value[(unsigned char) (c)])
+#define hex_value(c) ((unsigned int) _hex_value[(unsigned char) (c)])
/* Definitions used by the pexecute routine. */