[SLOF] [PATCH slof] libc: fix build in C23 mode

[Yaakov Selkowitz]

GCC 15 defaults to C23, in which bool, true, and false are keywords.

Signed-off-by: Yaakov Selkowitz <yselkowi at redhat.com>
Signed-off-by: Alexey Kardashevskiy <aik at ozlabs.ru>
---

This should be a common breakage but I have not managed google
a common solution for this, what do others do?

---
 lib/libc/include/stdbool.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/libc/include/stdbool.h b/lib/libc/include/stdbool.h
index 5b7d36a7effb..0e0f8c682ec4 100644
--- a/lib/libc/include/stdbool.h
+++ b/lib/libc/include/stdbool.h
@@ -13,7 +13,7 @@
 #ifndef _STDBOOL_H
 #define _STDBOOL_H
 
-#ifndef __cplusplus
+#if !defined(__cplusplus) && __STDC_VERSION__ < 202311L
 typedef enum { false = 0, true } bool;
 #endif
 
-- 
2.49.0