[Xen-devel] [PATCH 11 of 18] tools/libxl: fix build errors caused by Werror in disk_eject_xswatch_callback

[Olaf Hering <olaf@xxxxxxxxx>]

# HG changeset patch
# User Olaf Hering <olaf@xxxxxxxxx>
# Date 1333046733 -7200
# Node ID 46ec38b96a225eadcadd70927eb2b136f1172265
# Parent  1092e073b88e0aed775eec6d7349f310229e9aed
tools/libxl: fix build errors caused by Werror in disk_eject_xswatch_callback

-O2 -Wall -Werror triggers these warnings:

libxl.c: In function 'disk_eject_xswatch_callback':
libxl.c:928: warning: zero-length printf format string

Signed-off-by: Olaf Hering <olaf@xxxxxxxxx>

diff -r 1092e073b88e -r 46ec38b96a22 tools/libxl/libxl.c
--- a/tools/libxl/libxl.c
+++ b/tools/libxl/libxl.c
@@ -925,7 +925,7 @@ static void disk_eject_xswatch_callback(
     if (!value || strcmp(value,  "eject"))
         return;
 
-    if (libxl__xs_write(gc, XBT_NULL, wpath, "")) {
+    if (libxl__xs_write(gc, XBT_NULL, wpath, "%s", "")) {
         LIBXL__EVENT_DISASTER(egc, "xs_write failed acknowledging eject",
                               errno, LIBXL_EVENT_TYPE_DISK_EJECT);
         return;

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