From bd4f785a83636bf85b626e72bce6d081fb7fc826 Mon Sep 17 00:00:00 2001
From: Minh Bui <m.bui@anu.edu.au>
Date: Sat, 27 May 2023 02:51:47 -0400
Subject: [PATCH] -z trees_file now print error if file doesn't exist instead
 of hanging

---
 main/treetesting.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/main/treetesting.cpp b/main/treetesting.cpp
index 16a0b91aa..fd54568f2 100644
--- a/main/treetesting.cpp
+++ b/main/treetesting.cpp
@@ -1497,6 +1497,8 @@ void evaluateTrees(string treeset_file, Params &params, IQTree *tree,
                    vector<TreeInfo> &info, IntVector &distinct_ids)
 {
     cout << "Reading trees in " << treeset_file << " ..." << endl;
+    if (!fileExists(treeset_file))
+        outError("File not found ", treeset_file);
     ifstream in(treeset_file);
     evaluateTrees(in, params, tree, info, distinct_ids);
     in.close();