The branch main has been updated by kfv:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=72ed6f9c9dc95124cd81158d1c4437484a1b951e

commit 72ed6f9c9dc95124cd81158d1c4437484a1b951e
Author:     Faraz Vahedi <[email protected]>
AuthorDate: 2026-09-05 10:41:22 +0000
Commit:     Faraz Vahedi <[email protected]>
CommitDate: 2026-09-05 10:41:22 +0000

    libc: Add WCHAR_WIDTH in <wchar.h> as well
    
    Define __WCHAR_WIDTH in sys/_types.h and derive WCHAR_WIDTH from
    that, the same way as WCHAR_MIN and WCHAR_MAX, in both <wchar.h>
    and <stdint.h> as per C23 §7.31.1 and §7.22.3.4, respectively.
    
    Reviewed by:    fuz
    Approved by:    fuz (mentor)
    MFC after:      1 month
    Differential Revision:  https://reviews.freebsd.org/D59385
---
 include/wchar.h               | 3 +++
 sys/arm/include/_stdint.h     | 1 -
 sys/arm64/include/_stdint.h   | 1 -
 sys/powerpc/include/_stdint.h | 1 -
 sys/riscv/include/_stdint.h   | 1 -
 sys/sys/_types.h              | 2 ++
 sys/sys/stdint.h              | 3 +++
 sys/x86/include/_stdint.h     | 1 -
 8 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/include/wchar.h b/include/wchar.h
index 1447d083a889..d191981be5ff 100644
--- a/include/wchar.h
+++ b/include/wchar.h
@@ -97,6 +97,9 @@ typedef       __wint_t        wint_t;
 
 #define        WCHAR_MIN       __WCHAR_MIN
 #define        WCHAR_MAX       __WCHAR_MAX
+#if __ISO_C_VISIBLE >= 2023
+#define        WCHAR_WIDTH     __WCHAR_WIDTH
+#endif
 
 #ifndef WEOF
 #define        WEOF    ((wint_t)-1)
diff --git a/sys/arm/include/_stdint.h b/sys/arm/include/_stdint.h
index 9f9b7eb8a554..b0b92f8de72f 100644
--- a/sys/arm/include/_stdint.h
+++ b/sys/arm/include/_stdint.h
@@ -166,7 +166,6 @@
 #define PTRDIFF_WIDTH          INT32_WIDTH
 #define SIG_ATOMIC_WIDTH       INT32_WIDTH
 #define SIZE_WIDTH             INT32_WIDTH
-#define WCHAR_WIDTH            INT32_WIDTH
 #define WINT_WIDTH             INT32_WIDTH
 #endif /* __ISO_C_VISIBLE >= 2023 */
 
diff --git a/sys/arm64/include/_stdint.h b/sys/arm64/include/_stdint.h
index 621e5ce53721..1088ab383a35 100644
--- a/sys/arm64/include/_stdint.h
+++ b/sys/arm64/include/_stdint.h
@@ -168,7 +168,6 @@
 #define PTRDIFF_WIDTH           INT64_WIDTH
 #define SIG_ATOMIC_WIDTH        INT64_WIDTH
 #define SIZE_WIDTH              INT64_WIDTH
-#define WCHAR_WIDTH             INT32_WIDTH
 #define WINT_WIDTH              INT32_WIDTH
 #endif /* __ISO_C_VISIBLE >= 2023 */
 
diff --git a/sys/powerpc/include/_stdint.h b/sys/powerpc/include/_stdint.h
index 68ae89e23cdc..5423badb25a6 100644
--- a/sys/powerpc/include/_stdint.h
+++ b/sys/powerpc/include/_stdint.h
@@ -213,7 +213,6 @@
 #define SIZE_WIDTH             INT32_WIDTH
 #endif
 #define SIG_ATOMIC_WIDTH       INT32_WIDTH
-#define WCHAR_WIDTH            INT32_WIDTH
 #define WINT_WIDTH             INT32_WIDTH
 #endif /* __ISO_C_VISIBLE >= 2023 */
 
diff --git a/sys/riscv/include/_stdint.h b/sys/riscv/include/_stdint.h
index 9afe01c8a318..3cfb78208aec 100644
--- a/sys/riscv/include/_stdint.h
+++ b/sys/riscv/include/_stdint.h
@@ -164,7 +164,6 @@
 #define PTRDIFF_WIDTH          INT64_WIDTH
 #define SIG_ATOMIC_WIDTH       INT64_WIDTH
 #define SIZE_WIDTH             INT64_WIDTH
-#define WCHAR_WIDTH            INT32_WIDTH
 #define WINT_WIDTH             INT32_WIDTH
 #endif /* __ISO_C_VISIBLE >= 2023 */
 
diff --git a/sys/sys/_types.h b/sys/sys/_types.h
index bc438c17c8c0..a2f89b1f2055 100644
--- a/sys/sys/_types.h
+++ b/sys/sys/_types.h
@@ -129,6 +129,8 @@ typedef     __size_t        __vm_size_t;
  */
 #include <machine/_types.h>
 
+#define        __WCHAR_WIDTH   32              /* number of bits in a wchar_t 
*/
+
 /*
  * Standard type definitions.
  */
diff --git a/sys/sys/stdint.h b/sys/sys/stdint.h
index dccc5a8e6a6d..661945c18281 100644
--- a/sys/sys/stdint.h
+++ b/sys/sys/stdint.h
@@ -68,6 +68,9 @@ typedef       __uint_fast64_t         uint_fast64_t;
 /* Limits of wchar_t. */
 #define        WCHAR_MIN       __WCHAR_MIN
 #define        WCHAR_MAX       __WCHAR_MAX
+#if __ISO_C_VISIBLE >= 2023
+#define        WCHAR_WIDTH     __WCHAR_WIDTH
+#endif
 
 #if __EXT1_VISIBLE
 /* ISO/IEC 9899:2011 K.3.4.4 */
diff --git a/sys/x86/include/_stdint.h b/sys/x86/include/_stdint.h
index 4c65b0f095ea..fa51cd27b8a8 100644
--- a/sys/x86/include/_stdint.h
+++ b/sys/x86/include/_stdint.h
@@ -207,7 +207,6 @@
 #define SIG_ATOMIC_WIDTH       INT32_WIDTH
 #define SIZE_WIDTH             INT32_WIDTH
 #endif
-#define WCHAR_WIDTH            INT32_WIDTH
 #define WINT_WIDTH             INT32_WIDTH
 #endif /* __ISO_C_VISIBLE >= 2023 */
 

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