Expect only one argument for the not operator, even in debug mode.

2 files changed, 16 insertions, 1 deletions

diff --git a/src/analysis/scan/exprs/logical.c b/src/analysis/scan/exprs/logical.c
index c61a44c..3b07843 100644
--- a/src/analysis/scan/exprs/logical.c
+++ b/src/analysis/scan/exprs/logical.c
@@ -230,7 +230,7 @@ bool g_scan_logical_operation_create(GScanLogicalOperation *op, BooleanOperation
             g_object_ref(G_OBJECT(op->first));
 
             result = (second == NULL);
-            assert(second != NULL);
+            assert(second == NULL);
             break;
 
         default:
diff --git a/tests/analysis/scan/fuzzing.py b/tests/analysis/scan/fuzzing.py
index 53227af..61f4117 100644
--- a/tests/analysis/scan/fuzzing.py
+++ b/tests/analysis/scan/fuzzing.py
@@ -108,3 +108,18 @@ rule test {
 '''
 
         self.check_rule_failure(rule)
+
+
+    def testSelfReferencingRule(self):
+        """Expect only one argument for the not operator, even in debug mode."""
+
+        rule = '''
+rule test {
+
+   condition:
+      not(0)
+
+}
+'''
+
+        self.check_rule_success(rule)