#define CTYPE_UPPER 0x0200
#define CTYPE_XDIGIT 0x0400
-static unsigned int gs_lookup[] =
+static const unsigned int gs_lookup[] =
{
0x0004, 0x0004, 0x0004, 0x0004, 0x0004, 0x0004, 0x0004, 0x0004,
0x0004, 0x0104, 0x0104, 0x0104, 0x0104, 0x0104, 0x0004, 0x0004,