+/**
+ * @see irn_printf.
+ */
+void ir_vprintf(const char *fmt, va_list args);
+
+/**
+ * @see irn_printf.
+ */
+void ir_vfprintf(FILE *f, const char *fmt, va_list args);
+
+/**
+ * @see irn_printf.
+ */
+void ir_vsnprintf(char *buf, size_t len, const char *fmt, va_list args);
+
+/**
+ * @see irn_printf.
+ */
+void ir_obst_vprintf(struct obstack *obst, const char *fmt, va_list args);
+
+#ifdef WITH_LIBCORE
+#include <libcore/lc_printf.h>
+#endif /* WITH_LIBCORE */