walk: Do not crash on error when evaluating

The peeked expression must not be freed on error when evaluating. This fixes #120 Signed-off-by: Pantelis Antoniou <[email protected]>
pantoniou · Sep 30, 2024 · 0bbe029 · 0bbe029
1 parent 2bd292c
commit 0bbe029
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/lib/fy-walk.c b/src/lib/fy-walk.c
@@ -2973,6 +2973,7 @@ int evaluate_new(struct fy_path_parser *fypp)
 			goto err_out;
 
 		if (!fy_path_expr_type_is_lparen(exprl->type)) {
+			exprl = NULL;
 			ret = evaluate_new(fypp);
 			if (ret)
 				goto err_out;
@@ -2996,6 +2997,7 @@ int evaluate_new(struct fy_path_parser *fypp)
 			if (fy_path_expr_type_is_lparen(exprl->type))
 				break;
 
+			exprl = NULL;
 			ret = evaluate_new(fypp);
 			if (ret)
 				goto err_out;