Introduce I_STDCKDINT config macro

This macro is defined in config.h if <stdckdint.h> is available, and used in previously commited code (0f2b1e648156555a96ed54170e1b385a60010910, GH #23503).
2026-01-26 08:38:23 +00:00 · 2025-08-29 01:48:30 +09:00 · 2025-08-29 01:48:30 +09:00 · d51aa1a511
commit d51aa1a511
parent d9affba121
14 changed files with 50 additions and 6 deletions
--- a/6
+++ b/6
@ -1052,6 +1052,7 @@ i_quadmath=''
 i_shadow=''
 i_socks=''
 i_stdbool=''
+i_stdckdint=''
 i_stdint=''
 i_stdlib=''
 i_sunmath=''
@ -24226,6 +24227,10 @@ $rm_try
 set i_stdbool
 eval $setvar

+: see if C23 stdckdint is available
+set stdckdint.h i_stdckdint
+eval $inhdr
+
 : see if stdint is available
 set stdint.h i_stdint
 eval $inhdr
@ -25636,6 +25641,7 @@ i_sgtty='$i_sgtty'
 i_shadow='$i_shadow'
 i_socks='$i_socks'
 i_stdbool='$i_stdbool'
+i_stdckdint='$i_stdckdint'
 i_stdint='$i_stdint'
 i_stdlib='$i_stdlib'
 i_sunmath='$i_sunmath'
--- a/Cross/config.sh-arm-linux
+++ b/Cross/config.sh-arm-linux
@ -791,6 +791,7 @@ i_sgtty='undef'
 i_shadow='define'
 i_socks='undef'
 i_stdbool='undef'
+i_stdckdint='undef'
 i_stdint='define'
 i_stdlib='define'
 i_sunmath='undef'
--- a/Cross/config.sh-arm-linux-n770
+++ b/Cross/config.sh-arm-linux-n770
@ -789,6 +789,7 @@ i_sgtty='undef'
 i_shadow='define'
 i_socks='undef'
 i_stdbool='undef'
+i_stdckdint='undef'
 i_stdint='define'
 i_stdlib='define'
 i_sunmath='undef'
--- a/Porting/Glossary
+++ b/Porting/Glossary
@ -3722,6 +3722,11 @@ i_stdbool (i_stdbool.U):
 	indicates to the C program that <stdbool.h> exists and should
 	be included.

+i_stdckdint (i_stdckdint.U):
+	This variable conditionally defines the I_STDCKDINT symbol, which
+	indicates to the C program that <stdckdint.h> exists and should
+	be included.
+
 i_stdint (i_stdint.U):
 	This variable conditionally defines the I_STDINT symbol, which
 	indicates to the C program that <stdint.h> exists and should
--- a/Porting/config.sh
+++ b/Porting/config.sh
@ -813,6 +813,7 @@ i_sgtty='undef'
 i_shadow='define'
 i_socks='define'
 i_stdbool='define'
+i_stdckdint='undef'
 i_stdint='define'
 i_stdlib='define'
 i_sunmath='undef'
--- a/config_h.SH
+++ b/config_h.SH
@ -3842,6 +3842,12 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 */
 #$i_stdbool	I_STDBOOL		/**/

+/* I_STDCKDINT:
+ *	This symbol, if defined, indicates that <stdckdint.h> exists and
+ *	can be included.
+ */
+#$i_stdckdint	I_STDCKDINT		/**/
+
 /* I_STDINT:
 *	This symbol, if defined, indicates that <stdint.h> exists and
 *	should be included.
--- a/configure.com
+++ b/configure.com
@ -3667,6 +3667,12 @@ $   d_fd_set="define"
 $   echo4 "Well, your system knows about the normal fd_set typedef..."
 $ ENDIF
 $!
+$! Check for stdckdint.h
+$!
+$ tmp = "stdckdint.h"
+$ GOSUB inhdr
+$ i_stdckdint = tmp
+$!
 $! Check for stdint.h
 $!
 $ tmp = "stdint.h"
@ -6550,6 +6556,7 @@ $   WC "i_stdbool='define'"
 $ ELSE
 $   WC "i_stdbool='undef'"
 $ ENDIF
+$ WC "i_stdckdint='" + i_stdckdint + "'"
 $ WC "i_stdint='" + i_stdint + "'"
 $ WC "i_stdlib='define'"
 $ WC "i_sunmath='undef'"
--- a/inline.h
+++ b/inline.h
@ -3456,8 +3456,11 @@ S_lossless_NV_to_IV(const NV nv, IV *ivp)
 #    define IV_MUL_OVERFLOW_IS_EXPENSIVE (IVSIZE > PTRSIZE)
 #  endif

+#  ifdef I_STDCKDINT
+#    include <stdckdint.h>
+#  endif
+
 #  if defined(I_STDCKDINT) && !IV_ADD_SUB_OVERFLOW_IS_EXPENSIVE
-/* XXX Preparation for upcoming C23, but I_STDCKDINT is not yet tested */
 #    define S_iv_add_may_overflow(il, ir, result) ckd_add(result, il, ir)
 #  elif defined(HAS_BUILTIN_ADD_OVERFLOW) && !IV_ADD_SUB_OVERFLOW_IS_EXPENSIVE
 #    define S_iv_add_may_overflow __builtin_add_overflow
@ -3485,7 +3488,6 @@ S_iv_add_may_overflow (IV il, IV ir, IV *const result)
 */

 #  if defined(I_STDCKDINT)
-/* XXX Preparation for upcoming C23, but I_STDCKDINT is not yet tested */
 #    define S_uv_add_overflow(auv, buv, result) ckd_add(result, auv, buv)
 #  elif defined(HAS_BUILTIN_ADD_OVERFLOW)
 #    define S_uv_add_overflow __builtin_add_overflow
@ -3502,7 +3504,6 @@ S_uv_add_overflow (UV auv, UV buv, UV *const result)
 #  endif

 #  if defined(I_STDCKDINT) && !IV_ADD_SUB_OVERFLOW_IS_EXPENSIVE
-/* XXX Preparation for upcoming C23, but I_STDCKDINT is not yet tested */
 #    define S_iv_sub_may_overflow(il, ir, result) ckd_sub(result, il, ir)
 #  elif defined(HAS_BUILTIN_SUB_OVERFLOW) && !IV_ADD_SUB_OVERFLOW_IS_EXPENSIVE
 #    define S_iv_sub_may_overflow __builtin_sub_overflow
@ -3524,7 +3525,6 @@ S_iv_sub_may_overflow (IV il, IV ir, IV *const result)
 #  endif

 #  if defined(I_STDCKDINT)
-/* XXX Preparation for upcoming C23, but I_STDCKDINT is not yet tested */
 #    define S_uv_sub_overflow(auv, buv, result) ckd_sub(result, auv, buv)
 #  elif defined(HAS_BUILTIN_SUB_OVERFLOW)
 #    define S_uv_sub_overflow __builtin_sub_overflow
@ -3537,7 +3537,6 @@ S_uv_sub_overflow (UV auv, UV buv, UV *const result)
 #  endif

 #  if defined(I_STDCKDINT) && !IV_MUL_OVERFLOW_IS_EXPENSIVE
-/* XXX Preparation for upcoming C23, but I_STDCKDINT is not yet tested */
 #    define S_iv_mul_may_overflow(il, ir, result) ckd_mul(result, il, ir)
 #  elif defined(HAS_BUILTIN_MUL_OVERFLOW) && !IV_MUL_OVERFLOW_IS_EXPENSIVE
 #    define S_iv_mul_may_overflow __builtin_mul_overflow
@ -3565,7 +3564,6 @@ S_iv_mul_may_overflow (IV il, IV ir, IV *const result)
 #  endif

 #  if defined(I_STDCKDINT)
-/* XXX Preparation for upcoming C23, but I_STDCKDINT is not yet tested */
 #    define S_uv_mul_overflow(auv, buv, result) ckd_mul(result, auv, buv)
 #  elif defined(HAS_BUILTIN_MUL_OVERFLOW)
 #    define S_uv_mul_overflow   __builtin_mul_overflow
--- a/plan9/config_sh.sample
+++ b/plan9/config_sh.sample
@ -785,6 +785,7 @@ i_sgtty='undef'
 i_shadow='undef'
 i_socks='undef'
 i_stdbool='undef'
+i_stdckdint='undef'
 i_stdint='undef'
 i_stdlib='define'
 i_sunmath='undef'
--- a/pod/perldelta.pod
+++ b/pod/perldelta.pod
@ -275,6 +275,10 @@ L</Platform Support> section, instead.

 =item *

+C23 F<< <stdckdint.h> >> and associated macros are now used if available.
+
+=item *
+
 XXX

 =back
--- a/win32/config.gc
+++ b/win32/config.gc
@ -782,6 +782,7 @@ i_sgtty='undef'
 i_shadow='undef'
 i_socks='undef'
 i_stdbool='define'
+i_stdckdint='undef'
 i_stdint='define'
 i_stdlib='define'
 i_sunmath='undef'
--- a/win32/config.vc
+++ b/win32/config.vc
@ -781,6 +781,7 @@ i_sgtty='undef'
 i_shadow='undef'
 i_socks='undef'
 i_stdbool='undef'
+i_stdckdint='undef'
 i_stdint='undef'
 i_stdlib='define'
 i_sunmath='undef'
--- a/win32/config_H.gc
+++ b/win32/config_H.gc
@ -3801,6 +3801,12 @@
 */
 #define	I_STDBOOL		/**/

+/* I_STDCKDINT:
+ *	This symbol, if defined, indicates that <stdckdint.h> exists and
+ *	can be included.
+ */
+/*#define	I_STDCKDINT		/ **/
+
 /* I_STDINT:
 *	This symbol, if defined, indicates that <stdint.h> exists and
 *	should be included.
--- a/win32/config_H.vc
+++ b/win32/config_H.vc
@ -3801,6 +3801,12 @@
 */
 /*#define	I_STDBOOL		/ **/

+/* I_STDCKDINT:
+ *	This symbol, if defined, indicates that <stdckdint.h> exists and
+ *	can be included.
+ */
+/*#define	I_STDCKDINT		/ **/
+
 /* I_STDINT:
 *	This symbol, if defined, indicates that <stdint.h> exists and
 *	should be included.