xenstore: Do not assign to stdout/stderr/stdin - they are not

implemented as variables on all systems.
Signed-off-by: Keir Fraser <keir@xensource.com>

1 files changed, 3 insertions, 4 deletions

diff --git a/tools/xenstore/utils.c b/tools/xenstore/utils.c
index d7f5219a87..a1ac12584a 100644
--- a/tools/xenstore/utils.c
+++ b/tools/xenstore/utils.c
@@ -10,19 +10,18 @@
 #include <signal.h>
 #include "utils.h"
 
-void xprintf(const char *fmt, ...)
+static void default_xprintf(const char *fmt, ...)
 {
 	va_list args;
 
-	if (!stderr)
-		return; /* could trace()? */
-
 	va_start(args, fmt);
 	vfprintf(stderr, fmt, args);
 	va_end(args);
 	fflush(stderr);
 }
 
+void (*xprintf)(const char *fmt, ...) = default_xprintf;
+
 void barf(const char *fmt, ...)
 {
 	char *str;