[Xen-devel] [PATCH for-4.6 2/8] tools/libxl: Assert that libxl__ao_inprogress_gc() is not called with NULL

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

libxl__ao_inprogress_gc() is hidden behind various macros used to
construct local variables.  Assert() that NULL is not passed, to make
such an error very obvious, rather than a plain segfault at 0.

No functional change.

Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
CC: Ian Campbell <Ian.Campbell@xxxxxxxxxx>
CC: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>
CC: Wei Liu <wei.liu2@xxxxxxxxxx>
---
 tools/libxl/libxl_event.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/libxl/libxl_event.c b/tools/libxl/libxl_event.c
index 8acecfa..bfb6b31 100644
--- a/tools/libxl/libxl_event.c
+++ b/tools/libxl/libxl_event.c
@@ -1862,6 +1862,7 @@ void libxl__ao_create_fail(libxl__ao *ao)
 
 libxl__gc *libxl__ao_inprogress_gc(libxl__ao *ao)
 {
+    assert(ao);
     assert(ao->magic == LIBXL__AO_MAGIC);
     assert(!ao->complete);
     return &ao->gc;
-- 
1.7.10.4


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