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-rw-r--r--tests/libqos/libqos.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/tests/libqos/libqos.c b/tests/libqos/libqos.c
index 7abb48254e..6226546c28 100644
--- a/tests/libqos/libqos.c
+++ b/tests/libqos/libqos.c
@@ -10,6 +10,8 @@
 /**
  * Launch QEMU with the given command line,
  * and then set up interrupts and our guest malloc interface.
+ * Never returns NULL:
+ * Terminates the application in case an error is encountered.
  */
 QOSState *qtest_vboot(QOSOps *ops, const char *cmdline_fmt, va_list ap)
 {