git: 1f09e354297c - main - sys/limits.h: Add BOOL_MAX, BITINT_MAXWIDTH, and C23 feature test macro

The branch main has been updated by kfv:

URL: https://cgit.FreeBSD.org/src/commit/?id=1f09e354297ce571353210c23e50ef6fc19ce382

commit 1f09e354297ce571353210c23e50ef6fc19ce382
Author:     Faraz Vahedi <kfv@FreeBSD.org>
AuthorDate: 2026-08-04 12:43:57 +0000
Commit:     Faraz Vahedi <kfv@FreeBSD.org>
CommitDate: 2026-08-13 09:41:25 +0000

    sys/limits.h: Add BOOL_MAX, BITINT_MAXWIDTH, and C23 feature test macro
    
    Add BOOL_MAX and BITINT_MAXWIDTH macros for C23 compliance, and
    define the __STDC_VERSION_LIMITS_H__ feature test macro now that
    the header fully conforms to C23.
    
    Reviewed by:    fuz
    Approved by:    fuz (mentor)
    MFC after:      1 month
    Pull Request:   https://github.com/freebsd/freebsd-src/pull/2352
---
 include/limits.h    | 6 +++---
 sys/sys/limits.h    | 7 +++++++
 sys/sys/syslimits.h | 3 ++-
 3 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/include/limits.h b/include/limits.h
index 2b75b94cb513..7b316e6e905d 100644
--- a/include/limits.h
+++ b/include/limits.h
@@ -29,8 +29,8 @@
  * SUCH DAMAGE.
  */
 
-#ifndef _LIMITS_H_
-#define	_LIMITS_H_
+#ifndef __STDC_VERSION_LIMITS_H__
+#define __STDC_VERSION_LIMITS_H__	202311L
 
 #include <sys/cdefs.h>
 
@@ -148,4 +148,4 @@
 #include <sys/syslimits.h>
 #endif
 
-#endif /* !_LIMITS_H_ */
+#endif /* !__STDC_VERSION_LIMITS_H__ */
diff --git a/sys/sys/limits.h b/sys/sys/limits.h
index 8044d4458639..c25257f01c5e 100644
--- a/sys/sys/limits.h
+++ b/sys/sys/limits.h
@@ -69,6 +69,7 @@
 #endif
 
 #if __ISO_C_VISIBLE >= 2023
+#define BOOL_MAX	1		/* max value for a bool */
 #define BOOL_WIDTH	1		/* number of bits in a bool */
 
 #define CHAR_WIDTH	__CHAR_BIT	/* number of bits in a char */
@@ -86,6 +87,12 @@
 
 #define LLONG_WIDTH	__LLONG_BIT	/* number of bits in a long long */
 #define ULLONG_WIDTH	__LLONG_BIT	/* number of bits in an unsigned long long */
+
+#ifdef __BITINT_MAXWIDTH__
+#define BITINT_MAXWIDTH	__BITINT_MAXWIDTH__
+#else
+#define BITINT_MAXWIDTH	ULLONG_WIDTH
+#endif
 #endif
 
 #if __POSIX_VISIBLE || __XSI_VISIBLE
diff --git a/sys/sys/syslimits.h b/sys/sys/syslimits.h
index 64be1fc9b4e2..eb1520d98c89 100644
--- a/sys/sys/syslimits.h
+++ b/sys/sys/syslimits.h
@@ -32,7 +32,8 @@
 #ifndef _SYS_SYSLIMITS_H_
 #define _SYS_SYSLIMITS_H_
 
-#if !defined(_STANDALONE) && !defined(_KERNEL) && !defined(_LIMITS_H_) && !defined(_SYS_PARAM_H_)
+#if !defined(_STANDALONE) && !defined(_KERNEL) && \
+    !defined(__STDC_VERSION_LIMITS_H__) && !defined(_SYS_PARAM_H_)
 #warning "No user-serviceable parts inside."
 #endif