[libidn2] Update to 2.3.1 (#22959)

* [libidn2] Update to version 2.3.1.

* [libidn2] Update CI baseline

* Update version database.

ports/libidn2/CMakeLists.txt

@@ -37,7 +37,7 @@ set(LIB_SRC lib/bidi.c
 set(UNISTR_SRC unistring/c-ctype.c
                unistring/c-strcasecmp.c
                unistring/c-strncasecmp.c
-               unistring/malloca.c
+               unistring/free.c
                unistring/striconveh.c
                unistring/striconveha.c
                unistring/uniconv/u8-conv-from-enc.c
@@ -45,6 +45,7 @@ set(UNISTR_SRC unistring/c-ctype.c
                unistring/uniconv/u8-strconv-from-locale.c
                unistring/uniconv/u8-strconv-to-enc.c
                unistring/uniconv/u8-strconv-to-locale.c
+               unistring/unistr/u32-cmp.c
                unistring/unistr/u32-cpy.c
                unistring/unistr/u32-cpy-alloc.c
                unistring/unistr/u32-mbtouc-unsafe.c
@@ -86,6 +87,7 @@ set(GL_SRC gl/rawmemchr.c
            gl/strverscmp.c
            gl/msvc-inval.c
            gl/msvc-nothrow.c
+           gl/malloca.c
 )
 
 add_library(libidn2 ${LIB_SRC} ${UNISTR_SRC} ${GL_SRC})

ports/libidn2/config.h

@@ -16,12 +16,8 @@
 /* Define to the number of bits in type 'wint_t'. */
 /* #undef BITSIZEOF_WINT_T */
 
-/* Define to one of `_getb67', `GETB67', `getb67' for Cray-2 and Cray-YMP
-   systems. This function is required for `alloca.c' support on those systems.
-   */
-/* #undef CRAY_STACKSEG_END */
 
-/* Define to 1 if using `alloca.c'. */
+/* Define to 1 if using 'alloca.c'. */
 /* #undef C_ALLOCA */
 
 /* Define to 1 if // is a file system root distinct from /. */
@@ -31,6 +27,9 @@
    language is requested. */
 /* #undef ENABLE_NLS */
 
+/* Define this to 1 if F_DUPFD behavior does not match POSIX */
+/* #undef FCNTL_DUPFD_BUGGY */
+
 /* Define to a C preprocessor expression that evaluates to 1 or 0, depending
    whether the gnulib module fscanf shall be considered present. */
 #define GNULIB_FSCANF 1
@@ -704,12 +703,19 @@
 	STACK_DIRECTION = 0 => direction of growth unknown */
 /* #undef STACK_DIRECTION */
 
+/* Define to 1 if the `S_IS*' macros in <sys/stat.h> do not work properly. */
+/* #undef STAT_MACROS_BROKEN */
+
 /* Define to 1 if you have the ANSI C header files. */
 #define STDC_HEADERS 1
 
 /* Define to 1 if strerror_r returns char *. */
 /* #undef STRERROR_R_CHAR_P */
 
+/* Define to 1 if the type of the st_atim member of a struct stat is struct
+   timespec. */
+/* #undef TYPEOF_STRUCT_STAT_ST_ATIM_IS_STRUCT_TIMESPEC */
+
 /* Enable extensions on AIX 3, Interix.  */
 #ifndef _ALL_SOURCE
 # define _ALL_SOURCE 1
@@ -718,11 +724,44 @@
 #ifndef _DARWIN_C_SOURCE
 # define _DARWIN_C_SOURCE 1
 #endif
+/* Enable general extensions on Solaris.  */
+#ifndef __EXTENSIONS__
+/* # undef __EXTENSIONS__ */
+#endif
 /* Enable GNU extensions on systems that have them.  */
 #ifndef _GNU_SOURCE
 # define _GNU_SOURCE 1
 #endif
-/* Enable threading extensions on Solaris.  */
+/* Enable X/Open compliant socket functions that do not require linking
+   with -lxnet on HP-UX 11.11.  */
+#ifndef _HPUX_ALT_XOPEN_SOCKET_API
+/* # undef _HPUX_ALT_XOPEN_SOCKET_API */
+#endif
+/* Identify the host operating system as Minix.
+   This macro does not affect the system headers' behavior.
+   A future release of Autoconf may stop defining this macro.  */
+#ifndef _MINIX
+/* # undef _MINIX */
+#endif
+/* Enable general extensions on NetBSD.
+   Enable NetBSD compatibility extensions on Minix.  */
+#ifndef _NETBSD_SOURCE
+/* # undef _NETBSD_SOURCE */
+#endif
+/* Enable OpenBSD compatibility extensions on NetBSD.
+   Oddly enough, this does nothing on OpenBSD.  */
+#ifndef _OPENBSD_SOURCE
+/* # undef _OPENBSD_SOURCE */
+#endif
+/* Define to 1 if needed for POSIX-compatible behavior.  */
+#ifndef _POSIX_SOURCE
+/* # undef _POSIX_SOURCE */
+#endif
+/* Define to 2 if needed for POSIX-compatible behavior.  */
+#ifndef _POSIX_1_SOURCE
+/* # undef _POSIX_1_SOURCE */
+#endif
+/* Enable POSIX-compatible threading on Solaris.  */
 #ifndef _POSIX_PTHREAD_SEMANTICS
 # define _POSIX_PTHREAD_SEMANTICS 1
 #endif
@@ -758,16 +797,11 @@
 #ifndef _TANDEM_SOURCE
 # define _TANDEM_SOURCE 1
 #endif
-/* Enable X/Open extensions if necessary.  HP-UX 11.11 defines
+/* Enable X/Open extensions.  Define to 500 only if necessary
-   mbstate_t only if _XOPEN_SOURCE is defined to 500, regardless of
+   to make mbstate_t available.  */
-   whether compiling with -Ae or -D_HPUX_SOURCE=1.  */
 #ifndef _XOPEN_SOURCE
 /* # undef _XOPEN_SOURCE */
 #endif
-/* Enable general extensions on Solaris.  */
-#ifndef __EXTENSIONS__
-# define __EXTENSIONS__ 1
-#endif
 
 
 /* Version number of package */
@@ -781,19 +815,48 @@
    'wint_t'. */
 /* #undef WINT_T_SUFFIX */
 
-/* Define to 1 if on MINIX. */
+/* Number of bits in a file offset, on hosts where this is settable. */
-/* #undef _MINIX */
+/* #undef _FILE_OFFSET_BITS */
 
-/* Define to 1 to make NetBSD features available. MINIX 3 needs this. */
+/* True if the compiler says it groks GNU C version MAJOR.MINOR.  */
-/* #undef _NETBSD_SOURCE */
+#if defined __GNUC__ && defined __GNUC_MINOR__
+# define _GL_GNUC_PREREQ(major, minor) \
+    ((major) < __GNUC__ + ((minor) <= __GNUC_MINOR__))
+#else
+# define _GL_GNUC_PREREQ(major, minor) 0
+#endif
+
+
+/* Define to enable the declarations of ISO C 11 types and functions. */
+/* #undef _ISOC11_SOURCE */
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
 
 /* The _Noreturn keyword of C11.  */
-#if ! (defined _Noreturn \
+#ifndef _Noreturn
-       || (defined __STDC_VERSION__ && 201112 <= __STDC_VERSION__))
+# if (defined __cplusplus \
-# if (3 <= __GNUC__ || (__GNUC__ == 2 && 8 <= __GNUC_MINOR__) \
+      && ((201103 <= __cplusplus && !(__GNUC__ == 4 && __GNUC_MINOR__ == 7)) \
-      || 0x5110 <= __SUNPRO_C)
+          || (defined _MSC_VER && 1900 <= _MSC_VER)) \
+      && 0)
+    /* [[noreturn]] is not practically usable, because with it the syntax
+         extern _Noreturn void func (...);
+       would not be valid; such a declaration would only be valid with 'extern'
+       and '_Noreturn' swapped, or without the 'extern' keyword.  However, some
+       AIX system header files and several gnulib header files use precisely
+       this syntax with 'extern'.  */
+#  define _Noreturn [[noreturn]]
+# elif ((!defined __cplusplus || defined __clang__) \
+        && (201112 <= (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) \
+            || (!defined __STRICT_ANSI__ \
+                && (_GL_GNUC_PREREQ (4, 7) \
+                    || (defined __apple_build_version__ \
+                        ? 6000000 <= __apple_build_version__ \
+                        : 3 < __clang_major__ + (5 <= __clang_minor__))))))
+   /* _Noreturn works as-is.  */
+# elif _GL_GNUC_PREREQ (2, 8) || defined __clang__ || 0x5110 <= __SUNPRO_C
 #  define _Noreturn __attribute__ ((__noreturn__))
-# elif defined _MSC_VER && 1200 <= _MSC_VER
+# elif 1200 <= (defined _MSC_VER ? _MSC_VER : 0)
 #  define _Noreturn __declspec (noreturn)
 # else
 #  define _Noreturn
@@ -801,26 +864,262 @@
 #endif
 
 
-/* Define to 2 if the system does not provide POSIX.1 features except with
-   this defined. */
-/* #undef _POSIX_1_SOURCE */
-
-/* Define to 1 if you need to in order for 'stat' and other things to work. */
-/* #undef _POSIX_SOURCE */
-
 /* For standard stat data types on VMS. */
 #define _USE_STD_STAT 1
 
+/* Define to rpl_ if the getopt replacement functions and variables should be
+   used. */
+/* #undef __GETOPT_PREFIX */
+
 /* Define to 1 if the system <stdint.h> predates C++11. */
 /* #undef __STDC_CONSTANT_MACROS */
 
 /* Define to 1 if the system <stdint.h> predates C++11. */
 /* #undef __STDC_LIMIT_MACROS */
 
+/* The _GL_ASYNC_SAFE marker should be attached to functions that are
+   signal handlers (for signals other than SIGABRT, SIGPIPE) or can be
+   invoked from such signal handlers.  Such functions have some restrictions:
+     * All functions that it calls should be marked _GL_ASYNC_SAFE as well,
+       or should be listed as async-signal-safe in POSIX
+       <https://pubs.opengroup.org/onlinepubs/9699919799/functions/V2_chap02.html#tag_15_04>
+       section 2.4.3.  Note that malloc(), sprintf(), and fwrite(), in
+       particular, are NOT async-signal-safe.
+     * All memory locations (variables and struct fields) that these functions
+       access must be marked 'volatile'.  This holds for both read and write
+       accesses.  Otherwise the compiler might optimize away stores to and
+       reads from such locations that occur in the program, depending on its
+       data flow analysis.  For example, when the program contains a loop
+       that is intended to inspect a variable set from within a signal handler
+           while (!signal_occurred)
+             ;
+       the compiler is allowed to transform this into an endless loop if the
+       variable 'signal_occurred' is not declared 'volatile'.
+   Additionally, recall that:
+     * A signal handler should not modify errno (except if it is a handler
+       for a fatal signal and ends by raising the same signal again, thus
+       provoking the termination of the process).  If it invokes a function
+       that may clobber errno, it needs to save and restore the value of
+       errno.  */
+#define _GL_ASYNC_SAFE
+
+
+/* Attributes.  */
+#if (defined __has_attribute \
+     && (!defined __clang_minor__ \
+         || 3 < __clang_major__ + (5 <= __clang_minor__)))
+# define _GL_HAS_ATTRIBUTE(attr) __has_attribute (__##attr##__)
+#else
+# define _GL_HAS_ATTRIBUTE(attr) _GL_ATTR_##attr
+# define _GL_ATTR_alloc_size _GL_GNUC_PREREQ (4, 3)
+# define _GL_ATTR_always_inline _GL_GNUC_PREREQ (3, 2)
+# define _GL_ATTR_artificial _GL_GNUC_PREREQ (4, 3)
+# define _GL_ATTR_cold _GL_GNUC_PREREQ (4, 3)
+# define _GL_ATTR_const _GL_GNUC_PREREQ (2, 95)
+# define _GL_ATTR_deprecated _GL_GNUC_PREREQ (3, 1)
+# define _GL_ATTR_diagnose_if 0
+# define _GL_ATTR_error _GL_GNUC_PREREQ (4, 3)
+# define _GL_ATTR_externally_visible _GL_GNUC_PREREQ (4, 1)
+# define _GL_ATTR_fallthrough _GL_GNUC_PREREQ (7, 0)
+# define _GL_ATTR_format _GL_GNUC_PREREQ (2, 7)
+# define _GL_ATTR_leaf _GL_GNUC_PREREQ (4, 6)
+# ifdef _ICC
+#  define _GL_ATTR_may_alias 0
+# else
+#  define _GL_ATTR_may_alias _GL_GNUC_PREREQ (3, 3)
+# endif
+# define _GL_ATTR_malloc _GL_GNUC_PREREQ (3, 0)
+# define _GL_ATTR_noinline _GL_GNUC_PREREQ (3, 1)
+# define _GL_ATTR_nonnull _GL_GNUC_PREREQ (3, 3)
+# define _GL_ATTR_nonstring _GL_GNUC_PREREQ (8, 0)
+# define _GL_ATTR_nothrow _GL_GNUC_PREREQ (3, 3)
+# define _GL_ATTR_packed _GL_GNUC_PREREQ (2, 7)
+# define _GL_ATTR_pure _GL_GNUC_PREREQ (2, 96)
+# define _GL_ATTR_returns_nonnull _GL_GNUC_PREREQ (4, 9)
+# define _GL_ATTR_sentinel _GL_GNUC_PREREQ (4, 0)
+# define _GL_ATTR_unused _GL_GNUC_PREREQ (2, 7)
+# define _GL_ATTR_warn_unused_result _GL_GNUC_PREREQ (3, 4)
+#endif
+
+
+#if _GL_HAS_ATTRIBUTE (alloc_size)
+# define _GL_ATTRIBUTE_ALLOC_SIZE(args) __attribute__ ((__alloc_size__ args))
+#else
+# define _GL_ATTRIBUTE_ALLOC_SIZE(args)
+#endif
+
+#if _GL_HAS_ATTRIBUTE (always_inline)
+# define _GL_ATTRIBUTE_ALWAYS_INLINE __attribute__ ((__always_inline__))
+#else
+# define _GL_ATTRIBUTE_ALWAYS_INLINE
+#endif
+
+#if _GL_HAS_ATTRIBUTE (artificial)
+# define _GL_ATTRIBUTE_ARTIFICIAL __attribute__ ((__artificial__))
+#else
+# define _GL_ATTRIBUTE_ARTIFICIAL
+#endif
+
+/* Avoid __attribute__ ((cold)) on MinGW; see thread starting at
+   <https://lists.gnu.org/r/emacs-devel/2019-04/msg01152.html>.
+   Also, Oracle Studio 12.6 requires 'cold' not '__cold__'.  */
+#if _GL_HAS_ATTRIBUTE (cold) && !defined __MINGW32__
+# ifndef __SUNPRO_C
+#  define _GL_ATTRIBUTE_COLD __attribute__ ((__cold__))
+# else
+#  define _GL_ATTRIBUTE_COLD __attribute__ ((cold))
+# endif
+#else
+# define _GL_ATTRIBUTE_COLD
+#endif
+
+#if _GL_HAS_ATTRIBUTE (const)
+# define _GL_ATTRIBUTE_CONST __attribute__ ((__const__))
+#else
+# define _GL_ATTRIBUTE_CONST
+#endif
+
+#if 201710L < __STDC_VERSION__
+# define _GL_ATTRIBUTE_DEPRECATED [[__deprecated__]]
+#elif _GL_HAS_ATTRIBUTE (deprecated)
+# define _GL_ATTRIBUTE_DEPRECATED __attribute__ ((__deprecated__))
+#else
+# define _GL_ATTRIBUTE_DEPRECATED
+#endif
+
+#if _GL_HAS_ATTRIBUTE (error)
+# define _GL_ATTRIBUTE_ERROR(msg) __attribute__ ((__error__ (msg)))
+# define _GL_ATTRIBUTE_WARNING(msg) __attribute__ ((__warning__ (msg)))
+#elif _GL_HAS_ATTRIBUTE (diagnose_if)
+# define _GL_ATTRIBUTE_ERROR(msg) __attribute__ ((__diagnose_if__ (1, msg, "error")))
+# define _GL_ATTRIBUTE_WARNING(msg) __attribute__ ((__diagnose_if__ (1, msg, "warning")))
+#else
+# define _GL_ATTRIBUTE_ERROR(msg)
+# define _GL_ATTRIBUTE_WARNING(msg)
+#endif
+
+#if _GL_HAS_ATTRIBUTE (externally_visible)
+# define _GL_ATTRIBUTE_EXTERNALLY_VISIBLE __attribute__ ((externally_visible))
+#else
+# define _GL_ATTRIBUTE_EXTERNALLY_VISIBLE
+#endif
+
+/* FALLTHROUGH is special, because it always expands to something.  */
+#if 201710L < __STDC_VERSION__
+# define _GL_ATTRIBUTE_FALLTHROUGH [[__fallthrough__]]
+#elif _GL_HAS_ATTRIBUTE (fallthrough)
+# define _GL_ATTRIBUTE_FALLTHROUGH __attribute__ ((__fallthrough__))
+#else
+# define _GL_ATTRIBUTE_FALLTHROUGH ((void) 0)
+#endif
+
+#if _GL_HAS_ATTRIBUTE (format)
+# define _GL_ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec))
+#else
+# define _GL_ATTRIBUTE_FORMAT(spec)
+#endif
+
+#if _GL_HAS_ATTRIBUTE (leaf)
+# define _GL_ATTRIBUTE_LEAF __attribute__ ((__leaf__))
+#else
+# define _GL_ATTRIBUTE_LEAF
+#endif
+
+/* Oracle Studio 12.6 mishandles may_alias despite __has_attribute OK.  */
+#if _GL_HAS_ATTRIBUTE (may_alias) && !defined __SUNPRO_C
+# define _GL_ATTRIBUTE_MAY_ALIAS __attribute__ ((__may_alias__))
+#else
+# define _GL_ATTRIBUTE_MAY_ALIAS
+#endif
+
+#if 201710L < __STDC_VERSION__
+# define _GL_ATTRIBUTE_MAYBE_UNUSED [[__maybe_unused__]]
+#elif _GL_HAS_ATTRIBUTE (unused)
+# define _GL_ATTRIBUTE_MAYBE_UNUSED __attribute__ ((__unused__))
+#else
+# define _GL_ATTRIBUTE_MAYBE_UNUSED
+#endif
+/* Earlier spellings of this macro.  */
+#define _GL_UNUSED _GL_ATTRIBUTE_MAYBE_UNUSED
+#define _UNUSED_PARAMETER_ _GL_ATTRIBUTE_MAYBE_UNUSED
+
+#if _GL_HAS_ATTRIBUTE (malloc)
+# define _GL_ATTRIBUTE_MALLOC __attribute__ ((__malloc__))
+#else
+# define _GL_ATTRIBUTE_MALLOC
+#endif
+
+#if 201710L < __STDC_VERSION__
+# define _GL_ATTRIBUTE_NODISCARD [[__nodiscard__]]
+#elif _GL_HAS_ATTRIBUTE (warn_unused_result)
+# define _GL_ATTRIBUTE_NODISCARD __attribute__ ((__warn_unused_result__))
+#else
+# define _GL_ATTRIBUTE_NODISCARD
+#endif
+
+#if _GL_HAS_ATTRIBUTE (noinline)
+# define _GL_ATTRIBUTE_NOINLINE __attribute__ ((__noinline__))
+#else
+# define _GL_ATTRIBUTE_NOINLINE
+#endif
+
+#if _GL_HAS_ATTRIBUTE (nonnull)
+# define _GL_ATTRIBUTE_NONNULL(args) __attribute__ ((__nonnull__ args))
+#else
+# define _GL_ATTRIBUTE_NONNULL(args)
+#endif
+
+#if _GL_HAS_ATTRIBUTE (nonstring)
+# define _GL_ATTRIBUTE_NONSTRING __attribute__ ((__nonstring__))
+#else
+# define _GL_ATTRIBUTE_NONSTRING
+#endif
+
+/* There is no _GL_ATTRIBUTE_NORETURN; use _Noreturn instead.  */
+
+#if _GL_HAS_ATTRIBUTE (nothrow) && !defined __cplusplus
+# define _GL_ATTRIBUTE_NOTHROW __attribute__ ((__nothrow__))
+#else
+# define _GL_ATTRIBUTE_NOTHROW
+#endif
+
+#if _GL_HAS_ATTRIBUTE (packed)
+# define _GL_ATTRIBUTE_PACKED __attribute__ ((__packed__))
+#else
+# define _GL_ATTRIBUTE_PACKED
+#endif
+
+#if _GL_HAS_ATTRIBUTE (pure)
+# define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__))
+#else
+# define _GL_ATTRIBUTE_PURE
+#endif
+
+#if _GL_HAS_ATTRIBUTE (returns_nonnull)
+# define _GL_ATTRIBUTE_RETURNS_NONNULL __attribute__ ((__returns_nonnull__))
+#else
+# define _GL_ATTRIBUTE_RETURNS_NONNULL
+#endif
+
+#if _GL_HAS_ATTRIBUTE (sentinel)
+# define _GL_ATTRIBUTE_SENTINEL(pos) __attribute__ ((__sentinel__ pos))
+#else
+# define _GL_ATTRIBUTE_SENTINEL(pos)
+#endif
+
+
+/* To support C++ as well as C, use _GL_UNUSED_LABEL with trailing ';'.  */
+#if !defined __cplusplus || _GL_GNUC_PREREQ (4, 5)
+# define _GL_UNUSED_LABEL _GL_ATTRIBUTE_MAYBE_UNUSED
+#else
+# define _GL_UNUSED_LABEL
+#endif
+
+
 /* Please see the Gnulib manual for how to use these macros.
 
    Suppress extern inline with HP-UX cc, as it appears to be broken; see
-   <http://lists.gnu.org/archive/html/bug-texinfo/2013-02/msg00030.html>.
+   <https://lists.gnu.org/r/bug-texinfo/2013-02/msg00030.html>.
 
    Suppress extern inline with Sun C in standards-conformance mode, as it
    mishandles inline functions that call each other.  E.g., for 'inline void f
@@ -834,20 +1133,32 @@
    if isdigit is mistakenly implemented via a static inline function,
    a program containing an extern inline function that calls isdigit
    may not work since the C standard prohibits extern inline functions
-   from calling static functions.  This bug is known to occur on:
+   from calling static functions (ISO C 99 section 6.7.4.(3).
+   This bug is known to occur on:
 
      OS X 10.8 and earlier; see:
-     http://lists.gnu.org/archive/html/bug-gnulib/2012-12/msg00023.html
+     https://lists.gnu.org/r/bug-gnulib/2012-12/msg00023.html
 
      DragonFly; see
-     http://muscles.dragonflybsd.org/bulk/bleeding-edge-potential/latest-per-pkg/ah-tty-0.3.12.log
+     http://muscles.dragonflybsd.org/bulk/clang-master-potential/20141111_102002/logs/ah-tty-0.3.12.log
 
      FreeBSD; see:
-     http://lists.gnu.org/archive/html/bug-gnulib/2014-07/msg00104.html
+     https://lists.gnu.org/r/bug-gnulib/2014-07/msg00104.html
 
    OS X 10.9 has a macro __header_inline indicating the bug is fixed for C and
-   for clang but remains for g++; see <http://trac.macports.org/ticket/41033>.
+   for clang but remains for g++; see <https://trac.macports.org/ticket/41033>.
-   Assume DragonFly and FreeBSD will be similar.  */
+   Assume DragonFly and FreeBSD will be similar.
+
+   GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+   inline semantics, unless -fgnu89-inline is used.  It defines a macro
+   __GNUC_STDC_INLINE__ to indicate this situation or a macro
+   __GNUC_GNU_INLINE__ to indicate the opposite situation.
+   GCC 4.2 with -std=c99 or -std=gnu99 implements the GNU C inline
+   semantics but warns, unless -fgnu89-inline is used:
+     warning: C99 inline functions are not supported; using GNU89
+     warning: to disable this warning use -fgnu89-inline or the gnu_inline function attribute
+   It defines a macro __GNUC_GNU_INLINE__ to indicate this situation.
+ */
 #if (((defined __APPLE__ && defined __MACH__) \
       || defined __DragonFly__ || defined __FreeBSD__) \
      && (defined __header_inline \
@@ -928,22 +1239,42 @@
 # define __GNUC_STDC_INLINE__ 1
 #endif
 
+/* _GL_CMP (n1, n2) performs a three-valued comparison on n1 vs. n2, where
+   n1 and n2 are expressions without side effects, that evaluate to real
+   numbers (excluding NaN).
+   It returns
+     1  if n1 > n2
+     0  if n1 == n2
+     -1 if n1 < n2
+   The naïve code   (n1 > n2 ? 1 : n1 < n2 ? -1 : 0)  produces a conditional
+   jump with nearly all GCC versions up to GCC 10.
+   This variant     (n1 < n2 ? -1 : n1 > n2)  produces a conditional with many
+   GCC versions up to GCC 9.
+   The better code  (n1 > n2) - (n1 < n2)  from Hacker's Delight § 2-9
+   avoids conditional jumps in all GCC versions >= 3.4.  */
+#define _GL_CMP(n1, n2) (((n1) > (n2)) - ((n1) < (n2)))
+
+
 /* Define to `int' if <sys/types.h> does not define. */
 /* #undef mode_t */
 
-/* Define to `int' if <sys/types.h> does not define. */
+/* Define to the type of st_nlink in struct stat, or a supertype. */
+/* #undef nlink_t */
+
+/* Define as a signed integer type capable of holding a process identifier. */
 /* #undef pid_t */
 
 /* Define to the equivalent of the C99 'restrict' keyword, or to
    nothing if this is not supported.  Do not define if restrict is
-   supported directly.  */
+   supported only directly.  */
 #define restrict __restrict
-/* Work around a bug in Sun C++: it does not support _Restrict or
+/* Work around a bug in older versions of Sun C++, which did not
-   __restrict__, even though the corresponding Sun C compiler ends up with
+   #define __restrict__ or support _Restrict or __restrict__
-   "#define restrict _Restrict" or "#define restrict __restrict__" in the
+   even though the corresponding Sun C compiler ended up with
-   previous line.  Perhaps some future version of Sun C++ will work with
+   "#define restrict _Restrict" or "#define restrict __restrict__"
-   restrict; if so, hopefully it defines __RESTRICT like Sun C does.  */
+   in the previous line.  This workaround can be removed once
-#if defined __SUNPRO_CC && !defined __RESTRICT
+   we assume Oracle Developer Studio 12.5 (2016) or later.  */
+#if defined __SUNPRO_CC && !defined __RESTRICT && !defined __restrict__
 # define _Restrict
 # define __restrict__
 #endif
@@ -954,42 +1285,5 @@
 /* Define as a signed type of the same size as size_t. */
 #define ssize_t intptr_t
 
-/* Define as a marker that can be attached to declarations that might not
-    be used.  This helps to reduce warnings, such as from
-    GCC -Wunused-parameter.  */
-#if __GNUC__ >= 3 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
-# define _GL_UNUSED __attribute__ ((__unused__))
-#else
-# define _GL_UNUSED
-#endif
-/* The name _UNUSED_PARAMETER_ is an earlier spelling, although the name
-   is a misnomer outside of parameter lists.  */
-#define _UNUSED_PARAMETER_ _GL_UNUSED
-
-/* gcc supports the "unused" attribute on possibly unused labels, and
-   g++ has since version 4.5.  Note to support C++ as well as C,
-   _GL_UNUSED_LABEL should be used with a trailing ;  */
-#if !defined __cplusplus || __GNUC__ > 4 \
-    || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)
-# define _GL_UNUSED_LABEL _GL_UNUSED
-#else
-# define _GL_UNUSED_LABEL
-#endif
-
-/* The __pure__ attribute was added in gcc 2.96.  */
-#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96)
-# define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__))
-#else
-# define _GL_ATTRIBUTE_PURE /* empty */
-#endif
-
-/* The __const__ attribute was added in gcc 2.95.  */
-#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95)
-# define _GL_ATTRIBUTE_CONST __attribute__ ((__const__))
-#else
-# define _GL_ATTRIBUTE_CONST /* empty */
-#endif
-
-
 /* Define as a macro for copying va_list variables. */
 /* #undef va_copy */

ports/libidn2/portfile.cmake

@@ -1,10 +1,10 @@
-set(IDN2_VERSION 2.3.0)
+set(IDN2_VERSION 2.3.1)
 set(IDN2_FILENAME libidn2-${IDN2_VERSION}.tar.gz)
 
 vcpkg_download_distfile(ARCHIVE
     URLS "https://ftp.gnu.org/gnu/libidn/${IDN2_FILENAME}" "https://www.mirrorservice.org/sites/ftp.gnu.org/gnu/libidn/${IDN2_FILENAME}"
     FILENAME "${IDN2_FILENAME}"
-    SHA512 a2bf6d2249948bce14fbbc802f8af1c9b427fc9bf64203a2f3d7239d8e6061d0a8e7970a23e8e5889110a654a321e0504c7a6d049bb501e7f6a23d42b50b6187
+    SHA512 4d77a4a79e08a05e46fc14827f987b9e7645ebf5d0c0869eb96f9902c2f6b73ea69fd6f9f97b80a9f07cce84f7aa299834df91485d4e7c16500d31a4b9865fe4
 )
 
 vcpkg_extract_source_archive_ex(
@@ -20,6 +20,7 @@ if (VCPKG_TARGET_IS_WINDOWS)
     set(HAVE_ALLOCA_H 0)
     
     configure_file("${CMAKE_CURRENT_LIST_DIR}/config.h" "${SOURCE_PATH}")
+    configure_file("${SOURCE_PATH}/gl/alloca.in.h" "${SOURCE_PATH}/gl/alloca.h")
     
     function(simple_copy_template_header FILE_PATH BASE_NAME)
         if(NOT EXISTS "${FILE_PATH}/${BASE_NAME}.h" AND EXISTS "${FILE_PATH}/${BASE_NAME}.in.h")

ports/libidn2/vcpkg.json

@@ -1,7 +1,6 @@
 {
   "name": "libidn2",
-  "version": "2.3.0",
+  "version": "2.3.1",
-  "port-version": 5,
   "description": "GNU Libidn is an implementation of the Stringprep, Punycode and IDNA 2003 specifications. Libidn's purpose is to encode and decode internationalized domain names.",
   "homepage": "https://www.gnu.org/software/libidn/",
   "dependencies": [

versions/baseline.json

@@ -3593,8 +3593,8 @@
       "port-version": 0
     },
     "libidn2": {
-      "baseline": "2.3.0",
+      "baseline": "2.3.1",
-      "port-version": 5
+      "port-version": 0
     },
     "libigl": {
       "baseline": "2.3.0",

versions/l-/libidn2.json

@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "639f3ae3abc9b7265de12b29bfefb49a683e0b53",
+      "version": "2.3.1",
+      "port-version": 0
+    },
     {
       "git-tree": "b1eb568bf3bdf3fdb6e04b69f62f0347f2dff2ed",
       "version": "2.3.0",