diff --git a/devel/freebsd-gcc12/Makefile b/devel/freebsd-gcc12/Makefile
index 1de4cce9c92f..9d0d604194f8 100644
--- a/devel/freebsd-gcc12/Makefile
+++ b/devel/freebsd-gcc12/Makefile
@@ -1,132 +1,132 @@
 PORTNAME=	gcc
 DISTVERSION=	12.3.0
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	devel
 MASTER_SITES=	GCC
 PKGNAMEPREFIX=	${TARGETARCH}-
 PKGNAMESUFFIX=	${SUFFIX}
 
 MAINTAINER=	jhb@FreeBSD.org
 COMMENT=	Cross GNU Compiler ${SUFFIX} for FreeBSD/${TARGETARCH}
 WWW=		https://gcc.gnu.org/
 
 LICENSE=	GPLv3 GPLv3RLE
 LICENSE_COMB=	multi
 
 BUILD_DEPENDS=	${BU_PREFIX}-as:devel/binutils@${BU_FLAVOR} \
 		objdump:devel/binutils
 LIB_DEPENDS=	libgmp.so:math/gmp \
 		libmpfr.so:math/mpfr \
 		libmpc.so:math/mpc
 RUN_DEPENDS=	${BU_PREFIX}-as:devel/binutils@${BU_FLAVOR}
 
 FLAVORS=	aarch64 amd64 armv6 armv7 i386 powerpc powerpc64 riscv64
 TARGETARCH=	${FLAVOR}
 
 USES=		compiler:c++11-lang cpe gmake iconv libtool makeinfo tar:xz
 CPE_VENDOR=	gnu
 
 PLIST_SUB=	OPSYS=${OPSYS:tl} \
 		SUFFIX=${SUFFIX} \
 		TARGETARCH=${TARGETARCH} \
 		GCC_TARGET=${GCC_TARGET} \
 		GCC_VERSION=${PORTVERSION}
 
 SUB_FILES=	xtoolchain.mk
 SUB_LIST=	BU_PREFIX=${BU_PREFIX} \
 		GCC_TARGET=${GCC_TARGET} \
 		SUFFIX=${SUFFIX}
 
 SUFFIX=		${PORTVERSION:C/([0-9]+).*/\1/}
 
 GNU_CONFIGURE=	yes
 GNU_CONFIGURE_MANPREFIX=${PREFIX}/share
 CONFIGURE_OUTSOURCE=	yes
 CONFIGURE_ARGS+=--target=${GCC_TARGET} --disable-nls --enable-languages=c,c++ \
 		--enable-gnu-indirect-function \
 		--enable-initfini-array \
 		--program-prefix=${GCC_TARGET}- \
 		--program-suffix=${SUFFIX} \
 		--without-headers \
 		--with-gmp=${LOCALBASE} \
 		--with-pkgversion="FreeBSD Ports Collection for ${PKGNAMEPREFIX:C/-//g}" \
 		--with-system-zlib \
 		--without-zstd \
 		--with-gxx-libcxx-include-dir=//usr/include/c++/v1 \
 		--with-sysroot="/" \
 		--with-as=${LOCALBASE}/bin/${BU_PREFIX}-as \
 		--with-ld=${LOCALBASE}/bin/${BU_PREFIX}-ld
 
 .if ${TARGETARCH:Mpowerpc64*}
 CONFIGURE_ARGS+=--with-abi=elfv2
 .endif
 
 CPPFLAGS+=	-DLIBCXXABI=NULL
 
 ALL_TARGET=	all-gcc
 INSTALL_TARGET=	install-gcc
 
 .include <bsd.port.pre.mk>
 
 .if ${TARGETARCH:Marm*}
 TARGET_ABI=	gnueabi
 BU_FLAVOR=	arm_${TARGET_ABI}
 BU_PREFIX=	arm-${TARGET_ABI}-${OPSYS:tl}${OSREL}
 .else
 TARGET_ABI=	unknown
 BU_FLAVOR=	${TARGETARCH}
 BU_PREFIX=	${GCC_TARGET}
 .endif
 GCC_TARGET=	${TARGETARCH:S/amd64/x86_64/}-${TARGET_ABI}-${OPSYS:tl}${OSREL}
 
 post-patch:
 	@${REINPLACE_CMD} -e '/LOCAL_INCLUDE_DIR/ d ' \
 		${WRKSRC}//gcc/Makefile.in
 
 .if ${ARCH} == "amd64"
 CONFIGURE_TARGET=	x86_64-unknown-${OPSYS:tl}${OSREL}
 .else
 CONFIGURE_TARGET=	${ARCH}-unknown-${OPSYS:tl}${OSREL}
 .endif
 
 .if ${TARGETARCH} == "amd64" || ${TARGETARCH} == "powerpc64"
 CONFIGURE_ARGS+=--enable-multilib
 .endif
 
 .if ${ARCH} == "aarch64"
 PLIST_SUB+=	PLUGINS="@comment plugin does not build"
 .else
 PLIST_SUB+=	PLUGINS=""
 .endif
 
 .if ${TARGETARCH} == "amd64" || ${TARGETARCH} == "i386"
 PLIST_SUB+=	FLOAT_H="@comment "
 .else
 PLIST_SUB+=	FLOAT_H=""
 .endif
 
 PLIST=		${.CURDIR}/pkg-plist
 PLISTARCH=	${TARGETARCH:C/armv[67]/arm_gnueabi/}
 PLIST+=		${.CURDIR}/pkg-plist.${PLISTARCH}
 
 .if ${TARGETARCH} == "aarch64" || ${TARGETARCH:Marm*}
 PLIST+=		${.CURDIR}/pkg-plist.arm
 .endif
 .if ${TARGETARCH} == "amd64"
 PLIST+=		${.CURDIR}/pkg-plist.i386
 .endif
 
 post-install:
 	${RM} ${STAGEDIR}${PREFIX}/bin/${GCC_TARGET}-${GCC_TARGET}-*
 	${RM} ${STAGEDIR}${PREFIX}/share/info/*
 	${RM} ${STAGEDIR}${PREFIX}/share/man/man7/*
 	${RM} -r ${STAGEDIR}${PREFIX}/lib/gcc/${GCC_TARGET}/${PORTVERSION}/include-fixed
 .if ${TARGETARCH} == "amd64" || ${TARGETARCH} == "i386"
 	# Conflicts with sys/x86/include/float.h
 	${RM} ${STAGEDIR}${PREFIX}/lib/gcc/${GCC_TARGET}/${PORTVERSION}/include/float.h
 .endif
 	${MKDIR} ${STAGEDIR}${PREFIX}/share/toolchains/
 	${INSTALL_DATA} ${WRKDIR}/xtoolchain.mk \
 		${STAGEDIR}${PREFIX}/share/toolchains/${TARGETARCH}-gcc${SUFFIX}.mk
 
 .include <bsd.port.post.mk>
diff --git a/devel/freebsd-gcc12/files/patch-freebsd-format-extensions b/devel/freebsd-gcc12/files/patch-freebsd-format-extensions
index 7bce7950c4db..246dcb276ba3 100644
--- a/devel/freebsd-gcc12/files/patch-freebsd-format-extensions
+++ b/devel/freebsd-gcc12/files/patch-freebsd-format-extensions
@@ -1,107 +1,81 @@
 --- gcc/c-family/c-format.cc.orig	2022-05-06 00:30:56.000000000 -0700
 +++ gcc/c-family/c-format.cc	2022-11-18 11:27:29.832693000 -0800
 @@ -496,6 +496,17 @@ static const format_length_info printf_length_specs[] 
    { NO_FMT, NO_FMT, 0 }
  };
  
 +static const format_length_info freebsd_kprintf_length_specs[] =
 +{
 +  { "h", FMT_LEN_h, STD_C89, "hh", FMT_LEN_hh, STD_C99, 0 },
 +  { "l", FMT_LEN_l, STD_C89, "ll", FMT_LEN_ll, STD_C9L, 0 },
 +  { "q", FMT_LEN_ll, STD_EXT, NO_FMT, 0 },
 +  { "z", FMT_LEN_z, STD_C99, NO_FMT, 0 },
 +  { "t", FMT_LEN_t, STD_C99, NO_FMT, 0 },
 +  { "j", FMT_LEN_j, STD_C99, NO_FMT, 0 },
 +  { NO_FMT, NO_FMT, 0 }
 +};
 +
  /* Length specifiers valid for asm_fprintf.  */
  static const format_length_info asm_fprintf_length_specs[] =
  {
 @@ -721,6 +732,41 @@ static const format_char_info print_char_table[] =
    { NULL,  0, STD_C89, NOLENGTHS, NULL, NULL, NULL }
  };
  
 +static const format_char_info freebsd_ext_char_info =
 +{ NULL,   1, STD_EXT, { T89_C,  BADLEN,   BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN, BADLEN }, "",      "cR", NULL };
 +
 +static const format_char_info freebsd_kprintf_char_table[] =
 +{
 +  /* C89 conversion specifiers.  */
 +  { "di",  0, STD_C89, { T89_I,   T99_SC,  T89_S,   T89_L,   T9L_LL,  TEX_LL,  T99_SST, T99_PD,  T99_IM,  BADLEN,  BADLEN,  BADLEN  }, "-wp0 +'I",  "i",  NULL },
 +  { "oxX", 0, STD_C89, { T89_UI,  T99_UC,  T89_US,  T89_UL,  T9L_ULL, TEX_ULL, T99_ST,  T99_UPD, T99_UIM, BADLEN,  BADLEN,  BADLEN }, "-wp0#",     "i",  NULL },
 +  { "u",   0, STD_C89, { T89_UI,  T99_UC,  T89_US,  T89_UL,  T9L_ULL, TEX_ULL, T99_ST,  T99_UPD, T99_UIM, BADLEN,  BADLEN,  BADLEN }, "-wp0'I",    "i",  NULL },
 +  { "fgG", 0, STD_C89, { T89_D,   BADLEN,  BADLEN,  T99_D,   BADLEN,  T89_LD,  BADLEN,  BADLEN,  BADLEN,  T2X_D32, T2X_D64, T2X_D128 }, "-wp0 +#'I", "",   NULL },
 +  { "eE",  0, STD_C89, { T89_D,   BADLEN,  BADLEN,  T99_D,   BADLEN,  T89_LD,  BADLEN,  BADLEN,  BADLEN,  T2X_D32, T2X_D64, T2X_D128 }, "-wp0 +#I",  "",   NULL },
 +  { "c",   0, STD_C89, { T89_I,   BADLEN,  BADLEN,  T94_WI,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN }, "-w",        "",   NULL },
 +  { "s",   1, STD_C89, { T89_C,   BADLEN,  BADLEN,  T94_W,   BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN }, "-wp",       "cR", NULL },
 +  { "p",   1, STD_C89, { T89_V,   BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN }, "-w",        "c",  NULL },
 +  { "n",   1, STD_C89, { T89_I,   T99_SC,  T89_S,   T89_L,   T9L_LL,  BADLEN,  T99_SST, T99_PD,  T99_IM,  BADLEN,  BADLEN,  BADLEN }, "",          "W",  NULL },
 +  /* C99 conversion specifiers.  */
 +  { "F",   0, STD_C99, { T99_D,   BADLEN,  BADLEN,  T99_D,   BADLEN,  T99_LD,  BADLEN,  BADLEN,  BADLEN,  T2X_D32, T2X_D64, T2X_D128 }, "-wp0 +#'I", "",   NULL },
 +  { "aA",  0, STD_C99, { T99_D,   BADLEN,  BADLEN,  T99_D,   BADLEN,  T99_LD,  BADLEN,  BADLEN,  BADLEN,  T2X_D32, T2X_D64,  T2X_D128 }, "-wp0 +#",   "",   NULL },
 +  /* X/Open conversion specifiers.  */
 +  { "C",   0, STD_EXT, { TEX_WI,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN }, "-w",        "",   NULL },
 +  { "S",   1, STD_EXT, { TEX_W,   BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN }, "-wp",       "R",  NULL },
 +  /* FreeBSD kernel extensions (src/sys/kern/subr_prf.c).
 +     The format %b is supported to decode error registers.
 +     Its usage is:	printf("reg=%b\n", regval, "<base><arg>*");
 +     which produces:	reg=3<BITTWO,BITONE>
 +     The format %D provides a hexdump given a pointer and separator string:
 +     ("%6D", ptr, ":")		-> XX:XX:XX:XX:XX:XX
 +     ("%*D", len, ptr, " ")	-> XX XX XX XX ...
 +   */
 +  { "D",   1, STD_EXT, { T89_V,  BADLEN,   BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN }, "-wp",      "cR", &freebsd_ext_char_info },
 +  { "b",   0, STD_EXT, { T89_I,  BADLEN,   BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN  }, "-wp",      "",   &freebsd_ext_char_info },
 +  { "ry",  0, STD_EXT, { T89_I,  BADLEN,   BADLEN,   T89_L,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN  }, "-wp0 +#",  "i",  NULL  },
 +  { NULL,  0, STD_C89, NOLENGTHS, NULL, NULL, NULL }
 +};
 +
  static const format_char_info asm_fprintf_char_table[] =
  {
    /* C89 conversion specifiers.  */
 @@ -991,6 +1037,18 @@ static const format_kind_info format_types_orig[] =
      strfmon_flag_specs, strfmon_flag_pairs,
      FMT_FLAG_ARG_CONVERT, 'w', '#', 'p', 0, 'L', 0,
      NULL, NULL
 +  },
 +  { "printf0",  printf_length_specs,  print_char_table, " +#0-'I", NULL,
 +    printf_flag_specs, printf_flag_pairs,
-+    FMT_FLAG_ARG_CONVERT|FMT_FLAG_DOLLAR_MULTIPLE|FMT_FLAG_USE_DOLLAR|FMT_FLAG_EMPTY_PREC_OK|FMT_FLAG_NULL_FORMAT_OK,
++    FMT_FLAG_ARG_CONVERT|FMT_FLAG_DOLLAR_MULTIPLE|FMT_FLAG_USE_DOLLAR|FMT_FLAG_EMPTY_PREC_OK,
 +    'w', 0, 'p', 0, 'L', 0,
 +    &integer_type_node, &integer_type_node
 +  },
 +  { "freebsd_kprintf",  freebsd_kprintf_length_specs,  freebsd_kprintf_char_table, " +#0-'", NULL,
 +    printf_flag_specs, printf_flag_pairs,
 +    FMT_FLAG_ARG_CONVERT|FMT_FLAG_DOLLAR_MULTIPLE|FMT_FLAG_USE_DOLLAR|FMT_FLAG_EMPTY_PREC_OK,
 +    'w', 0, 'p', 0, 'L', 0,
 +    &integer_type_node, &integer_type_node
    }
  };
  
-@@ -1635,6 +1693,9 @@ check_format_arg (void *ctx, tree format_tree,
- 
-   if (integer_zerop (format_tree))
-     {
-+      if (!(format_types[info->format_type].flags & FMT_FLAG_NULL_FORMAT_OK))
-+	warning (OPT_Wformat_, "null format string");
-+
-       /* Skip to first argument to check, so we can see if this format
- 	 has any arguments (it shouldn't).  */
-       while (arg_num + 1 < info->first_arg_num)
---- gcc/c-family/c-format.h.orig	2022-05-06 00:30:56.000000000 -0700
-+++ gcc/c-family/c-format.h	2022-11-17 17:31:38.546594000 -0800
-@@ -77,11 +77,12 @@ enum
-   FMT_FLAG_DOLLAR_GAP_POINTER_OK = 128,
-   /* The format arg is an opaque object that will be parsed by an external
-      facility.  */
--  FMT_FLAG_PARSE_ARG_CONVERT_EXTERNAL = 256
-+  FMT_FLAG_PARSE_ARG_CONVERT_EXTERNAL = 256,
-   /* Not included here: details of whether width or precision may occur
-      (controlled by width_char and precision_char); details of whether
-      '*' can be used for these (width_type and precision_type); details
-      of whether length modifiers can occur (length_char_specs).  */
-+  FMT_FLAG_NULL_FORMAT_OK = 512
- };
- 
- /* Structure describing a length modifier supported in format checking, and
diff --git a/devel/freebsd-gcc13/Makefile b/devel/freebsd-gcc13/Makefile
index b7536f2e7bdf..f08ead54f058 100644
--- a/devel/freebsd-gcc13/Makefile
+++ b/devel/freebsd-gcc13/Makefile
@@ -1,132 +1,132 @@
 PORTNAME=	gcc
 DISTVERSION=	13.2.0
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	devel
 MASTER_SITES=	GCC
 PKGNAMEPREFIX=	${TARGETARCH}-
 PKGNAMESUFFIX=	${SUFFIX}
 
 MAINTAINER=	jhb@FreeBSD.org
 COMMENT=	Cross GNU Compiler ${SUFFIX} for FreeBSD/${TARGETARCH}
 WWW=		https://gcc.gnu.org/
 
 LICENSE=	GPLv3 GPLv3RLE
 LICENSE_COMB=	multi
 
 BUILD_DEPENDS=	${BU_PREFIX}-as:devel/binutils@${BU_FLAVOR} \
 		objdump:devel/binutils
 LIB_DEPENDS=	libgmp.so:math/gmp \
 		libmpfr.so:math/mpfr \
 		libmpc.so:math/mpc
 RUN_DEPENDS=	${BU_PREFIX}-as:devel/binutils@${BU_FLAVOR}
 
 FLAVORS=	aarch64 amd64 armv6 armv7 i386 powerpc powerpc64 riscv64
 TARGETARCH=	${FLAVOR}
 
 USES=		compiler:c++11-lang cpe gmake iconv libtool makeinfo tar:xz
 CPE_VENDOR=	gnu
 
 PLIST_SUB=	OPSYS=${OPSYS:tl} \
 		SUFFIX=${SUFFIX} \
 		TARGETARCH=${TARGETARCH} \
 		GCC_TARGET=${GCC_TARGET} \
 		GCC_VERSION=${PORTVERSION}
 
 SUB_FILES=	xtoolchain.mk
 SUB_LIST=	BU_PREFIX=${BU_PREFIX} \
 		GCC_TARGET=${GCC_TARGET} \
 		SUFFIX=${SUFFIX}
 
 SUFFIX=		${PORTVERSION:C/([0-9]+).*/\1/}
 
 GNU_CONFIGURE=	yes
 GNU_CONFIGURE_MANPREFIX=${PREFIX}/share
 CONFIGURE_OUTSOURCE=	yes
 CONFIGURE_ARGS+=--target=${GCC_TARGET} --disable-nls --enable-languages=c,c++ \
 		--enable-gnu-indirect-function \
 		--enable-initfini-array \
 		--program-prefix=${GCC_TARGET}- \
 		--program-suffix=${SUFFIX} \
 		--without-headers \
 		--with-gmp=${LOCALBASE} \
 		--with-pkgversion="FreeBSD Ports Collection for ${PKGNAMEPREFIX:C/-//g}" \
 		--with-system-zlib \
 		--without-zstd \
 		--with-gxx-libcxx-include-dir=//usr/include/c++/v1 \
 		--with-sysroot="/" \
 		--with-as=${LOCALBASE}/bin/${BU_PREFIX}-as \
 		--with-ld=${LOCALBASE}/bin/${BU_PREFIX}-ld
 
 .if ${TARGETARCH:Mpowerpc64*}
 CONFIGURE_ARGS+=--with-abi=elfv2
 .endif
 
 CPPFLAGS+=	-DLIBCXXABI=NULL
 
 ALL_TARGET=	all-gcc
 INSTALL_TARGET=	install-gcc
 
 .include <bsd.port.pre.mk>
 
 .if ${TARGETARCH:Marm*}
 TARGET_ABI=	gnueabi
 BU_FLAVOR=	arm_${TARGET_ABI}
 BU_PREFIX=	arm-${TARGET_ABI}-${OPSYS:tl}${OSREL}
 .else
 TARGET_ABI=	unknown
 BU_FLAVOR=	${TARGETARCH}
 BU_PREFIX=	${GCC_TARGET}
 .endif
 GCC_TARGET=	${TARGETARCH:S/amd64/x86_64/}-${TARGET_ABI}-${OPSYS:tl}${OSREL}
 
 post-patch:
 	@${REINPLACE_CMD} -e '/LOCAL_INCLUDE_DIR/ d ' \
 		${WRKSRC}//gcc/Makefile.in
 
 .if ${ARCH} == "amd64"
 CONFIGURE_TARGET=	x86_64-unknown-${OPSYS:tl}${OSREL}
 .else
 CONFIGURE_TARGET=	${ARCH}-unknown-${OPSYS:tl}${OSREL}
 .endif
 
 .if ${TARGETARCH} == "amd64" || ${TARGETARCH} == "powerpc64"
 CONFIGURE_ARGS+=--enable-multilib
 .endif
 
 .if ${ARCH} == "aarch64"
 PLIST_SUB+=	PLUGINS="@comment plugin does not build"
 .else
 PLIST_SUB+=	PLUGINS=""
 .endif
 
 .if ${TARGETARCH} == "amd64" || ${TARGETARCH} == "i386"
 PLIST_SUB+=	FLOAT_H="@comment "
 .else
 PLIST_SUB+=	FLOAT_H=""
 .endif
 
 PLIST=		${.CURDIR}/pkg-plist
 PLISTARCH=	${TARGETARCH:C/armv[67]/arm_gnueabi/}
 PLIST+=		${.CURDIR}/pkg-plist.${PLISTARCH}
 
 .if ${TARGETARCH} == "aarch64" || ${TARGETARCH:Marm*}
 PLIST+=		${.CURDIR}/pkg-plist.arm
 .endif
 .if ${TARGETARCH} == "amd64"
 PLIST+=		${.CURDIR}/pkg-plist.i386
 .endif
 
 post-install:
 	${RM} ${STAGEDIR}${PREFIX}/bin/${GCC_TARGET}-${GCC_TARGET}-*
 	${RM} ${STAGEDIR}${PREFIX}/share/info/*
 	${RM} ${STAGEDIR}${PREFIX}/share/man/man7/*
 	${RM} -r ${STAGEDIR}${PREFIX}/lib/gcc/${GCC_TARGET}/${PORTVERSION}/include-fixed
 .if ${TARGETARCH} == "amd64" || ${TARGETARCH} == "i386"
 	# Conflicts with sys/x86/include/float.h
 	${RM} ${STAGEDIR}${PREFIX}/lib/gcc/${GCC_TARGET}/${PORTVERSION}/include/float.h
 .endif
 	${MKDIR} ${STAGEDIR}${PREFIX}/share/toolchains/
 	${INSTALL_DATA} ${WRKDIR}/xtoolchain.mk \
 		${STAGEDIR}${PREFIX}/share/toolchains/${TARGETARCH}-gcc${SUFFIX}.mk
 
 .include <bsd.port.post.mk>
diff --git a/devel/freebsd-gcc13/files/patch-freebsd-format-extensions b/devel/freebsd-gcc13/files/patch-freebsd-format-extensions
index 7bce7950c4db..246dcb276ba3 100644
--- a/devel/freebsd-gcc13/files/patch-freebsd-format-extensions
+++ b/devel/freebsd-gcc13/files/patch-freebsd-format-extensions
@@ -1,107 +1,81 @@
 --- gcc/c-family/c-format.cc.orig	2022-05-06 00:30:56.000000000 -0700
 +++ gcc/c-family/c-format.cc	2022-11-18 11:27:29.832693000 -0800
 @@ -496,6 +496,17 @@ static const format_length_info printf_length_specs[] 
    { NO_FMT, NO_FMT, 0 }
  };
  
 +static const format_length_info freebsd_kprintf_length_specs[] =
 +{
 +  { "h", FMT_LEN_h, STD_C89, "hh", FMT_LEN_hh, STD_C99, 0 },
 +  { "l", FMT_LEN_l, STD_C89, "ll", FMT_LEN_ll, STD_C9L, 0 },
 +  { "q", FMT_LEN_ll, STD_EXT, NO_FMT, 0 },
 +  { "z", FMT_LEN_z, STD_C99, NO_FMT, 0 },
 +  { "t", FMT_LEN_t, STD_C99, NO_FMT, 0 },
 +  { "j", FMT_LEN_j, STD_C99, NO_FMT, 0 },
 +  { NO_FMT, NO_FMT, 0 }
 +};
 +
  /* Length specifiers valid for asm_fprintf.  */
  static const format_length_info asm_fprintf_length_specs[] =
  {
 @@ -721,6 +732,41 @@ static const format_char_info print_char_table[] =
    { NULL,  0, STD_C89, NOLENGTHS, NULL, NULL, NULL }
  };
  
 +static const format_char_info freebsd_ext_char_info =
 +{ NULL,   1, STD_EXT, { T89_C,  BADLEN,   BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN, BADLEN }, "",      "cR", NULL };
 +
 +static const format_char_info freebsd_kprintf_char_table[] =
 +{
 +  /* C89 conversion specifiers.  */
 +  { "di",  0, STD_C89, { T89_I,   T99_SC,  T89_S,   T89_L,   T9L_LL,  TEX_LL,  T99_SST, T99_PD,  T99_IM,  BADLEN,  BADLEN,  BADLEN  }, "-wp0 +'I",  "i",  NULL },
 +  { "oxX", 0, STD_C89, { T89_UI,  T99_UC,  T89_US,  T89_UL,  T9L_ULL, TEX_ULL, T99_ST,  T99_UPD, T99_UIM, BADLEN,  BADLEN,  BADLEN }, "-wp0#",     "i",  NULL },
 +  { "u",   0, STD_C89, { T89_UI,  T99_UC,  T89_US,  T89_UL,  T9L_ULL, TEX_ULL, T99_ST,  T99_UPD, T99_UIM, BADLEN,  BADLEN,  BADLEN }, "-wp0'I",    "i",  NULL },
 +  { "fgG", 0, STD_C89, { T89_D,   BADLEN,  BADLEN,  T99_D,   BADLEN,  T89_LD,  BADLEN,  BADLEN,  BADLEN,  T2X_D32, T2X_D64, T2X_D128 }, "-wp0 +#'I", "",   NULL },
 +  { "eE",  0, STD_C89, { T89_D,   BADLEN,  BADLEN,  T99_D,   BADLEN,  T89_LD,  BADLEN,  BADLEN,  BADLEN,  T2X_D32, T2X_D64, T2X_D128 }, "-wp0 +#I",  "",   NULL },
 +  { "c",   0, STD_C89, { T89_I,   BADLEN,  BADLEN,  T94_WI,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN }, "-w",        "",   NULL },
 +  { "s",   1, STD_C89, { T89_C,   BADLEN,  BADLEN,  T94_W,   BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN }, "-wp",       "cR", NULL },
 +  { "p",   1, STD_C89, { T89_V,   BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN }, "-w",        "c",  NULL },
 +  { "n",   1, STD_C89, { T89_I,   T99_SC,  T89_S,   T89_L,   T9L_LL,  BADLEN,  T99_SST, T99_PD,  T99_IM,  BADLEN,  BADLEN,  BADLEN }, "",          "W",  NULL },
 +  /* C99 conversion specifiers.  */
 +  { "F",   0, STD_C99, { T99_D,   BADLEN,  BADLEN,  T99_D,   BADLEN,  T99_LD,  BADLEN,  BADLEN,  BADLEN,  T2X_D32, T2X_D64, T2X_D128 }, "-wp0 +#'I", "",   NULL },
 +  { "aA",  0, STD_C99, { T99_D,   BADLEN,  BADLEN,  T99_D,   BADLEN,  T99_LD,  BADLEN,  BADLEN,  BADLEN,  T2X_D32, T2X_D64,  T2X_D128 }, "-wp0 +#",   "",   NULL },
 +  /* X/Open conversion specifiers.  */
 +  { "C",   0, STD_EXT, { TEX_WI,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN }, "-w",        "",   NULL },
 +  { "S",   1, STD_EXT, { TEX_W,   BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN }, "-wp",       "R",  NULL },
 +  /* FreeBSD kernel extensions (src/sys/kern/subr_prf.c).
 +     The format %b is supported to decode error registers.
 +     Its usage is:	printf("reg=%b\n", regval, "<base><arg>*");
 +     which produces:	reg=3<BITTWO,BITONE>
 +     The format %D provides a hexdump given a pointer and separator string:
 +     ("%6D", ptr, ":")		-> XX:XX:XX:XX:XX:XX
 +     ("%*D", len, ptr, " ")	-> XX XX XX XX ...
 +   */
 +  { "D",   1, STD_EXT, { T89_V,  BADLEN,   BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN }, "-wp",      "cR", &freebsd_ext_char_info },
 +  { "b",   0, STD_EXT, { T89_I,  BADLEN,   BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN  }, "-wp",      "",   &freebsd_ext_char_info },
 +  { "ry",  0, STD_EXT, { T89_I,  BADLEN,   BADLEN,   T89_L,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN  }, "-wp0 +#",  "i",  NULL  },
 +  { NULL,  0, STD_C89, NOLENGTHS, NULL, NULL, NULL }
 +};
 +
  static const format_char_info asm_fprintf_char_table[] =
  {
    /* C89 conversion specifiers.  */
 @@ -991,6 +1037,18 @@ static const format_kind_info format_types_orig[] =
      strfmon_flag_specs, strfmon_flag_pairs,
      FMT_FLAG_ARG_CONVERT, 'w', '#', 'p', 0, 'L', 0,
      NULL, NULL
 +  },
 +  { "printf0",  printf_length_specs,  print_char_table, " +#0-'I", NULL,
 +    printf_flag_specs, printf_flag_pairs,
-+    FMT_FLAG_ARG_CONVERT|FMT_FLAG_DOLLAR_MULTIPLE|FMT_FLAG_USE_DOLLAR|FMT_FLAG_EMPTY_PREC_OK|FMT_FLAG_NULL_FORMAT_OK,
++    FMT_FLAG_ARG_CONVERT|FMT_FLAG_DOLLAR_MULTIPLE|FMT_FLAG_USE_DOLLAR|FMT_FLAG_EMPTY_PREC_OK,
 +    'w', 0, 'p', 0, 'L', 0,
 +    &integer_type_node, &integer_type_node
 +  },
 +  { "freebsd_kprintf",  freebsd_kprintf_length_specs,  freebsd_kprintf_char_table, " +#0-'", NULL,
 +    printf_flag_specs, printf_flag_pairs,
 +    FMT_FLAG_ARG_CONVERT|FMT_FLAG_DOLLAR_MULTIPLE|FMT_FLAG_USE_DOLLAR|FMT_FLAG_EMPTY_PREC_OK,
 +    'w', 0, 'p', 0, 'L', 0,
 +    &integer_type_node, &integer_type_node
    }
  };
  
-@@ -1635,6 +1693,9 @@ check_format_arg (void *ctx, tree format_tree,
- 
-   if (integer_zerop (format_tree))
-     {
-+      if (!(format_types[info->format_type].flags & FMT_FLAG_NULL_FORMAT_OK))
-+	warning (OPT_Wformat_, "null format string");
-+
-       /* Skip to first argument to check, so we can see if this format
- 	 has any arguments (it shouldn't).  */
-       while (arg_num + 1 < info->first_arg_num)
---- gcc/c-family/c-format.h.orig	2022-05-06 00:30:56.000000000 -0700
-+++ gcc/c-family/c-format.h	2022-11-17 17:31:38.546594000 -0800
-@@ -77,11 +77,12 @@ enum
-   FMT_FLAG_DOLLAR_GAP_POINTER_OK = 128,
-   /* The format arg is an opaque object that will be parsed by an external
-      facility.  */
--  FMT_FLAG_PARSE_ARG_CONVERT_EXTERNAL = 256
-+  FMT_FLAG_PARSE_ARG_CONVERT_EXTERNAL = 256,
-   /* Not included here: details of whether width or precision may occur
-      (controlled by width_char and precision_char); details of whether
-      '*' can be used for these (width_type and precision_type); details
-      of whether length modifiers can occur (length_char_specs).  */
-+  FMT_FLAG_NULL_FORMAT_OK = 512
- };
- 
- /* Structure describing a length modifier supported in format checking, and