https://bugs.ghostscript.com/show_bug.cgi?id=708608#c4
Bug: https://bugs.gentoo.org/971915

--- a/base/stdpre.h
+++ b/base/stdpre.h
@@ -343,7 +343,7 @@ typedef signed char schar;
  */
 
 /* C23 has bool as a builtin type. */
-#if !defined(__cplusplus) && (!defined(__STDC_VERSION__) || __STDC_VERSION__ < 202311L)
+#if !defined(__cplusplus) && (!defined(__STDC_VERSION__) || __STDC_VERSION__ < 202000L)
 #ifdef __BEOS__
 typedef unsigned char bool;
 #else