From 17b81bd118da18a73338311e62f6f8fbd43c0e97 Mon Sep 17 00:00:00 2001
From: Joe Latessa <latessa@users.noreply.github.com>
Date: Mon, 2 Mar 2026 12:49:16 -0500
Subject: [PATCH] avoid seg fault if arrays are not allocated

---
 external_packages/hydro_from_external_file/Hydroinfo_h5.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/external_packages/hydro_from_external_file/Hydroinfo_h5.cpp b/external_packages/hydro_from_external_file/Hydroinfo_h5.cpp
index 5c2e07b3..23484787 100644
--- a/external_packages/hydro_from_external_file/Hydroinfo_h5.cpp
+++ b/external_packages/hydro_from_external_file/Hydroinfo_h5.cpp
@@ -36,6 +36,7 @@ HydroinfoH5::~HydroinfoH5() {
 }
 
 void HydroinfoH5::clean_hydro_event() {
+    if (readinFlag == 0) return;
     for (int i=0; i<Buffersize; i++) {
         for (int j=0; j<dimensionX; j++) {
            delete[] ed[i][j];