#define WIDTH_x64_SCANF_IS_A_BROKEN_API "17"
#define WIDTH_lg_SCANF_IS_A_BROKEN_API "4096" /* Hugely optimistic approximation */
+/*
+ * bison 3.8.2 produces a parser with unused, but set, which results in warnings
+ * at build time.
+ */
+#ifdef __clang__
+#pragma clang diagnostic ignored "-Wunused-but-set-variable"
+#endif /* __clang__ */
+
#ifdef DEBUG
static const int print_xml = 1;
#define dbg_printf(fmt, args...) \