X-Git-Url: http://git.annexia.org/?a=blobdiff_plain;f=daemon%2Fdevsparts.c;h=c8f0256a351cdb0f69375ddf32f801f120898d12;hb=6cdd349e6964636c2b7ae71453dca33716dda486;hp=1781def3feb9ac876011328a490def77d2ff7b63;hpb=ffd4820ffe953b0583e3a9357e37d74bed3a2320;p=libguestfs.git

diff --git a/daemon/devsparts.c b/daemon/devsparts.c
index 1781def..c8f0256 100644
--- a/daemon/devsparts.c
+++ b/daemon/devsparts.c
@@ -105,8 +105,9 @@ foreach_block_device (block_dev_func_t func)
     return NULL;
   }
 
-  /* Sort the devices */
-  sort_strings (r, size);
+  /* Sort the devices.  Note that r might be NULL if there are no devices. */
+  if (r != NULL)
+    sort_strings (r, size);
 
   /* NULL terminate the list */
   if (add_string (&r, &size, &alloc, NULL) == -1) {