--- src/VBox/Additions/x11/x11include/xproto-7.0.18/X11/Xfuncproto.h.orig	2021-01-07 15:37:10 UTC
+++ src/VBox/Additions/x11/x11include/xproto-7.0.18/X11/Xfuncproto.h
@@ -48,6 +48,227 @@ in this Software without prior written authorization f
 #endif /* _Xconst */
 
 /* Function prototype configuration (see configure for more info) */
+#if !defined(NARROWPROTO) && \
+    (defined(__linux__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__))
+#define NARROWPROTO
+#endif
+#ifndef FUNCPROTO
+#define FUNCPROTO 15
+#endif
+
+#ifndef NeedWidePrototypes
+#ifdef NARROWPROTO
+#define NeedWidePrototypes 0
+#else
+#define NeedWidePrototypes 1		/* default to make interropt. easier */
+#endif
+#endif /* NeedWidePrototypes */
+
+#endif /* NeedFunctionPrototypes */
+
+#ifndef _XFUNCPROTOBEGIN
+#if defined(__cplusplus) || defined(c_plusplus) /* for C++ V2.0 */
+#define _XFUNCPROTOBEGIN extern "C" {	/* do not leave open across includes */
+#define _XFUNCPROTOEND }
+#else
+#define _XFUNCPROTOBEGIN
+#define _XFUNCPROTOEND
+#endif
+#endif /* _XFUNCPROTOBEGIN */
+
+/* http://clang.llvm.org/docs/LanguageExtensions.html#has-attribute */
+#ifndef __has_attribute
+# define __has_attribute(x) 0  /* Compatibility with non-clang compilers. */
+#endif
+#ifndef __has_feature
+# define __has_feature(x) 0    /* Compatibility with non-clang compilers. */
+#endif
+#ifndef __has_extension
+# define __has_extension(x) 0  /* Compatibility with non-clang compilers. */
+#endif
+
+/* Added in X11R6.9, so available in any version of modular xproto */
+#if __has_attribute(__sentinel__) || (defined(__GNUC__) && (__GNUC__ >= 4))
+# define _X_SENTINEL(x) __attribute__ ((__sentinel__(x)))
+#else
+# define _X_SENTINEL(x)
+#endif /* GNUC >= 4 */
+
+/* Added in X11R6.9, so available in any version of modular xproto */
+#if (__has_attribute(visibility) || (defined(__GNUC__) && (__GNUC__ >= 4))) \
+    && !defined(__CYGWIN__) && !defined(__MINGW32__)
+# define _X_EXPORT      __attribute__((visibility("default")))
+# define _X_HIDDEN      __attribute__((visibility("hidden")))
+# define _X_INTERNAL    __attribute__((visibility("internal")))
+#elif defined(__SUNPRO_C) && (__SUNPRO_C >= 0x550)
+# define _X_EXPORT      __global
+# define _X_HIDDEN      __hidden
+# define _X_INTERNAL    __hidden
+#else /* not gcc >= 4 and not Sun Studio >= 8 */
+# define _X_EXPORT
+# define _X_HIDDEN
+# define _X_INTERNAL
+#endif /* GNUC >= 4 */
+
+/* Branch prediction hints for individual conditionals */
+/* requires xproto >= 7.0.9 */
+#if defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 303)
+# define _X_LIKELY(x)   __builtin_expect(!!(x), 1)
+# define _X_UNLIKELY(x) __builtin_expect(!!(x), 0)
+#else /* not gcc >= 3.3 */
+# define _X_LIKELY(x)   (x)
+# define _X_UNLIKELY(x) (x)
+#endif
+
+/* Bulk branch prediction hints via marking error path functions as "cold" */
+/* requires xproto >= 7.0.25 */
+#if __has_attribute(__cold__) || \
+    (defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 403)) /* 4.3+ */
+# define _X_COLD __attribute__((__cold__))
+#else
+# define _X_COLD /* nothing */
+#endif
+
+/* Added in X11R6.9, so available in any version of modular xproto */
+#if __has_attribute(deprecated) \
+    || (defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 301)) \
+    || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x5130))
+# define _X_DEPRECATED  __attribute__((deprecated))
+#else /* not gcc >= 3.1 */
+# define _X_DEPRECATED
+#endif
+
+/* requires xproto >= 7.0.30 */
+#if __has_extension(attribute_deprecated_with_message) || \
+                (defined(__GNUC__) && ((__GNUC__ >= 5) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 5))))
+# define _X_DEPRECATED_MSG(_msg) __attribute__((deprecated(_msg)))
+#else
+# define _X_DEPRECATED_MSG(_msg) _X_DEPRECATED
+#endif
+
+/* requires xproto >= 7.0.17 */
+#if __has_attribute(noreturn) \
+    || (defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 205)) \
+    || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
+# define _X_NORETURN __attribute((noreturn))
+#else
+# define _X_NORETURN
+#endif /* GNUC  */
+
+/* Added in X11R6.9, so available in any version of modular xproto */
+#if __has_attribute(__format__) \
+    || defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 203)
+# define _X_ATTRIBUTE_PRINTF(x,y) __attribute__((__format__(__printf__,x,y)))
+#else /* not gcc >= 2.3 */
+# define _X_ATTRIBUTE_PRINTF(x,y)
+#endif
+
+/* requires xproto >= 7.0.22 - since this uses either gcc or C99 variable
+   argument macros, must be only used inside #ifdef _X_NONNULL guards, as
+   many legacy X clients are compiled in C89 mode still. */
+#if __has_attribute(nonnull) \
+    && defined(__STDC_VERSION__) && (__STDC_VERSION__ - 0 >= 199901L) /* C99 */
+#define _X_NONNULL(...)  __attribute__((nonnull(__VA_ARGS__)))
+#elif __has_attribute(nonnull) \
+    || defined(__GNUC__) &&  ((__GNUC__ * 100 + __GNUC_MINOR__) >= 303)
+#define _X_NONNULL(args...)  __attribute__((nonnull(args)))
+#elif defined(__STDC_VERSION__) && (__STDC_VERSION__ - 0 >= 199901L) /* C99 */
+#define _X_NONNULL(...)  /* */
+#endif
+
+/* requires xproto >= 7.0.22 */
+#if __has_attribute(__unused__) \
+    || defined(__GNUC__) &&  ((__GNUC__ * 100 + __GNUC_MINOR__) >= 205)
+#define _X_UNUSED  __attribute__((__unused__))
+#else
+#define _X_UNUSED  /* */
+#endif
+
+/* C99 keyword "inline" or equivalent extensions in pre-C99 compilers */
+/* requires xproto >= 7.0.9
+   (introduced in 7.0.8 but didn't support all compilers until 7.0.9) */
+#if defined(inline) /* assume autoconf set it correctly */ || \
+   (defined(__STDC_VERSION__) && (__STDC_VERSION__ - 0 >= 199901L)) /* C99 */ || \
+   (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x550))
+# define _X_INLINE inline
+#elif defined(__GNUC__) && !defined(__STRICT_ANSI__) /* gcc w/C89+extensions */
+# define _X_INLINE __inline__
+#else
+# define _X_INLINE
+#endif
+
+/* C99 keyword "restrict" or equivalent extensions in pre-C99 compilers */
+/* requires xproto >= 7.0.21 */
+#ifndef _X_RESTRICT_KYWD
+# if defined(restrict) /* assume autoconf set it correctly */ || \
+    (defined(__STDC_VERSION__) && (__STDC_VERSION__ - 0 >= 199901L) /* C99 */ \
+     && !defined(__cplusplus)) /* Workaround g++ issue on Solaris */
+#  define _X_RESTRICT_KYWD  restrict
+# elif defined(__GNUC__) && !defined(__STRICT_ANSI__) /* gcc w/C89+extensions */
+#  define _X_RESTRICT_KYWD __restrict__
+# else
+#  define _X_RESTRICT_KYWD
+# endif
+#endif
+
+/* requires xproto >= 7.0.30 */
+#if __has_attribute(no_sanitize_thread)
+# define _X_NOTSAN __attribute__((no_sanitize_thread))
+#else
+# define _X_NOTSAN
+#endif
+
+#endif /* _XFUNCPROTO_H_ */
+/*
+ *
+Copyright 1989, 1991, 1998  The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+ *
+ */
+
+/* Definitions to make function prototypes manageable */
+
+#ifndef _XFUNCPROTO_H_
+#define _XFUNCPROTO_H_
+
+#ifndef NeedFunctionPrototypes
+#define NeedFunctionPrototypes 1
+#endif /* NeedFunctionPrototypes */
+
+#ifndef NeedVarargsPrototypes
+#define NeedVarargsPrototypes 1
+#endif /* NeedVarargsPrototypes */
+
+#if NeedFunctionPrototypes
+
+#ifndef NeedNestedPrototypes
+#define NeedNestedPrototypes 1
+#endif /* NeedNestedPrototypes */
+
+#ifndef _Xconst
+#define _Xconst const
+#endif /* _Xconst */
+
+/* Function prototype configuration (see configure for more info) */
 #ifndef NARROWPROTO
 #undef NARROWPROTO
 #endif
