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-rw-r--r--lib/igt_core.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/igt_core.c b/lib/igt_core.c
index 7c727edc..26dd2789 100644
--- a/lib/igt_core.c
+++ b/lib/igt_core.c
@@ -760,6 +760,7 @@ static int common_init(int *argc, char **argv,
list_subtests = true;
break;
case OPT_RUN_SUBTEST:
+ assert(optarg);
if (!list_subtests)
run_single_subtest = strdup(optarg);
break;