# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1640972702 -3600
# Node ID b9ede19521074e98aa8a094e292f6d3d9906fa31
# Parent  cec771ba515f2dd6d567f2780d5c1c0fce47e97e
patch 8.2.3958: build failure compiling xxd with "-std=c2x"

Commit: https://github.com/vim/vim/commit/ef089f50f9d6685c7a0ab94f9133576d7beec32b
Author: Yegappan Lakshmanan <yegappan@yahoo.com>
Date:   Fri Dec 31 17:33:47 2021 +0000

    patch 8.2.3958: build failure compiling xxd with "-std=c2x"

    Problem:    Build failure compiling xxd with "-std=c2x".
    Solution:   define _XOPEN_SOURCE. (Yegappan Lakshmanan, closes https://github.com/vim/vim/issues/9444)

diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -750,6 +750,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3958,
+/**/
     3957,
 /**/
     3956,
diff --git a/src/xxd/xxd.c b/src/xxd/xxd.c
--- a/src/xxd/xxd.c
+++ b/src/xxd/xxd.c
@@ -72,6 +72,10 @@
 # define CYGWIN
 #endif
 
+#if (defined(__linux__) && !defined(__ANDROID__)) || defined(__CYGWIN__)
+# define _XOPEN_SOURCE 700   /* for fdopen() */
+#endif
+
 #include <stdio.h>
 #ifdef VAXC
 # include <file.h>