--- Libc/Libc-1725.40.4/stdio/FreeBSD/flags.c
+++ Libc/Libc-763.13/stdio/FreeBSD/flags.c
@@ -49,7 +49,9 @@
  * Return 0 on error.
  */
 int
-__sflags(const char *mode, int *optr)
+__sflags(mode, optr)
+	const char *mode;
+	int *optr;
 {
 	int ret, m, o;
 
@@ -79,17 +81,10 @@
 	}
 
 	/* [rwa]\+ or [rwa]b\+ means read and write */
-	if (*mode == 'b')
-		mode++;
-	if (*mode == '+') {
+	if (*mode == '+' || (*mode == 'b' && mode[1] == '+')) {
 		ret = __SRW;
 		m = O_RDWR;
-		mode++;
-		if (*mode == 'b')
-			mode++;
 	}
-	if (*mode == 'x')
-		o |= O_EXCL;
 	*optr = m | o;
 	return (ret);
 }