Patch for bug #63408 by Florian Weimer

ChangeLog

@@ -1,3 +1,12 @@
+2022-11-25  Florian Weimer
+
+	* config/config.poll-dev.c:
+	* config/config.proccmd.c:
+	* config/config.reuseaddr.c:
+	* config/config.vasprintf.c:
+	* config/config.vsprintf.c:
+	Make config tests work with C99 compiler
+
 2022-11-21  Wolfgang Lux  <wolfgang.lux@gmail.com>
 
 	* Source/NSFileManager.m:

config/config.poll-dev.c

@@ -6,6 +6,7 @@
 #include <stdio.h>
 #include <fcntl.h>
 #include <poll.h>
+#include <unistd.h>
 
 int
 main()

config/config.proccmd.c

@@ -10,6 +10,8 @@
   notice and this notice are preserved.
 */
 #include <stdio.h>
+#include <unistd.h>
+
 int main()
 {
   char	buf[32];

config/config.reuseaddr.c

@@ -31,7 +31,7 @@
 // Maximum data in single I/O operation
 #define	NETBUF_SIZE	4096
 
-main()
+int main()
 {
   struct sockaddr_in	sin;
   int	size = sizeof(sin);

config/config.vasprintf.c

@@ -25,6 +25,6 @@ static int func(const char *fmt, ...)
 int main()
 {
   if (func("1234", 0) == 4)
-    exit (0);
-  exit (-1);
+    return 0;
+  return -1;
 }

config/config.vsprintf.c

@@ -25,6 +25,6 @@ static int func(const char *fmt, ...)
 int main()
 {
   if (func("1234", 0) == 4)
-    exit (0);
-  exit (-1);
+    return 0;
+  return -1;
 }