[qemu-s390x] [RFC PATCH v3 13/25] xen: Let buffer_append() return a size_t

[Philippe Mathieu-Daudé]

To the Xen team: this is not trivial to me to demonstrate
this assertion can never happen, but then the whole series
is justified and I can convert qemu_chr_fe_write() to use
size_t argument.
Can you help me here?

Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
---
 hw/char/xen_console.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/char/xen_console.c b/hw/char/xen_console.c
index 1a30014a11..5b672a5a24 100644
--- a/hw/char/xen_console.c
+++ b/hw/char/xen_console.c
@@ -92,6 +92,7 @@ static ssize_t buffer_append(struct XenConsole *con)
     }
 
  out:
+    assert(buffer->size >= buffer->consumed);
     return buffer->size - buffer->consumed;
 }
 
-- 
2.20.1