+#define AttrEq(a,b) ((a).attr == (b).attr)
+#define ExtcEq(a,b) ((a).ext_color == (b).ext_color)
+#define TextEq(a,b) (!memcmp((a).chars, (b).chars, sizeof(a.chars)))
+
+/*
+ * cchar_t may not be packed, e.g., on a 64-bit platform.
+ *
+ * Set "NCURSES_CHAR_EQ" to use a workaround that compares the structure
+ * member-by-member so that valgrind will not see compares against the
+ * uninitialized filler bytes.
+ */
+#if NCURSES_CHAR_EQ
+#if defined(USE_TERMLIB) && !defined(NEED_NCURSES_CH_T)
+#else
+static NCURSES_INLINE int
+_nc_char_eq(NCURSES_CH_T a, NCURSES_CH_T b)
+{
+#if NCURSES_EXT_COLORS
+ return (AttrEq(a,b) && TextEq(a,b) && ExtcEq(a,b));
+#else
+ return (AttrEq(a,b) && TextEq(a,b));
+#endif
+}
+#define CharEq(a,b) _nc_char_eq(a,b)
+#endif
+#else
+#define CharEq(a,b) (!memcmp(&(a), &(b), sizeof(a)))
+#endif
+