https://bugs.gentoo.org/955698

--- a/lib/asn1/typedefs.h
+++ b/lib/asn1/typedefs.h
@@ -34,6 +34,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdarg.h>
+#include <stdbool.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <unistd.h>
@@ -52,7 +53,6 @@
 
 #endif
 
-typedef unsigned char bool;
 typedef unsigned int u_int;
 
 #define DBG1(s...)