Submitted By: Bruce Dubbs <bdubbs at linuxfromscratch dot org>
Date: 2025-05-21
Initial Package Version: 5.3-rc1
Upstream Status: Submitted
Origin: Self with input from Xi Ruoyao
Description: Disallow trying to typedef bool when using the C standard
             library c23 or later.

diff -Naur bash-5.3-rc1.orig/bashansi.h bash-5.3-rc1/bashansi.h
--- bash-5.3-rc1.orig/bashansi.h	2024-03-25 11:17:49.000000000 -0500
+++ bash-5.3-rc1/bashansi.h	2025-05-21 15:15:56.269730519 -0500
@@ -35,17 +35,21 @@
 #  include "ansi_stdlib.h"
 #endif /* !HAVE_STDLIB_H */
 
-/* If bool is not a compiler builtin, prefer stdbool.h if we have it */
-#if !defined (HAVE_C_BOOL)
-#  if defined (HAVE_STDBOOL_H)
-#    include <stdbool.h>
-#  else
-#    undef bool
+/* Explicitly check __STDC_VERSION__ here in addition to HAVE_C_BOOL:
+   in cross-compilation build tools does not include config.h.*/
+#if !defined(__STDC_VERSION__) || __STDC_VERSION__ < 202311L 
+   /* If bool is not a compiler builtin, prefer stdbool.h if we have it */
+#  if !defined (HAVE_C_BOOL)
+#    if defined (HAVE_STDBOOL_H)
+#      include <stdbool.h>
+#    else
+#      undef bool
 typedef unsigned char bool;
-#    define true 1
-#    define false 0
+#      define true 1
+#      define false 0
+#    endif
 #  endif
-#endif
+#endif /* __STDC_VERSION__ < 202311L */
 
 /* Include <stddef.h>, or define substitutes (config.h handles ptrdiff_t). */
 #ifdef HAVE_STDDEF_H