readline: Add missing GCC_FMT_ATTR
This fixes a compiler warning with -Werror=missing-format-attribute
and allows improved compiler checks for variable argument lists.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
diff --git a/qemu-io.c b/qemu-io.c
index d669028..7f459d8 100644
--- a/qemu-io.c
+++ b/qemu-io.c
@@ -219,7 +219,8 @@
return prompt;
}
-static void readline_printf_func(void *opaque, const char *fmt, ...)
+static void GCC_FMT_ATTR(2, 3) readline_printf_func(void *opaque,
+ const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);