1 files changed, 13 insertions, 10 deletions
diff --git a/scripts/parse_kconfig/boolexpr.c b/scripts/parse_kconfig/boolexpr.c
index d29d238..ccd7cef 100644
--- a/scripts/parse_kconfig/boolexpr.c
+++ b/scripts/parse_kconfig/boolexpr.c
@@ -212,22 +212,25 @@ struct boolexpr *boolexpr_and(struct boolexpr *e1, struct boolexpr *e2) {
 }
 
 struct boolexpr *boolexpr_not(struct boolexpr *e) {
+    struct boolexpr *rtn;
+    rtn = malloc(sizeof(struct boolexpr));
+    rtn->overusage = 0;
+    rtn->id = 0;
+
     switch (e->type) {
     case BT_FALSE:
-        e->type = BT_TRUE;
-        return e;
+        rtn->type = BT_TRUE;
+        boolexpr_free(e);
+        break;
     case BT_TRUE:
-        e->type = BT_FALSE;
-        return e;
+        rtn->type = BT_FALSE;
+        boolexpr_free(e);
+        break;
     default:
+        rtn->type = BT_NOT;
+        rtn->left = e;
         break;
     }
-    struct boolexpr *rtn;
-    rtn = malloc(sizeof(struct boolexpr));
-    rtn->type = BT_NOT;
-    rtn->overusage = 0;
-    rtn->id = 0;
-    rtn->left = e;
     return rtn;
 }