fix dot crashing in multiple places

2026-10-07 18:11:39 +03:00
parent 8bc359fed6
commit 0777faa11d
3 changed files with 17 additions and 4 deletions
@@ -35,6 +35,7 @@ int check_syntax(std::vector<Expression::Token>& tv)
 	int problem_cnt = 0;

 	// check start and finish validity
+	if (tv.size())
 	{
 		int pc = problem_cnt;

@@ -101,6 +102,7 @@ int check_syntax(std::vector<Expression::Token>& tv)
 	}

 	// check token type sequence
+	if (tv.size() > 1)
 	{
 		for (int i = 0, l = tv.size() - 1, pc; pc = problem_cnt, i < l; i++)
 		{
@@ -812,7 +814,11 @@ Expression::TreeNode ov_to_tree(const std::vector<Expression::Token> tv, const s
 {
 	Expression::TreeNode root;
 	std::queue<std::pair<Expression::TreeNode *, int>> queued_ops;
-	queued_ops.emplace(&root, ov.size() - 1);
+
+	if (ov.size())
+	{
+		queued_ops.emplace(&root, ov.size() - 1);
+	}

 	while (queued_ops.size())
 	{