From 82cea619a46963508e280ff360ad8e78fe4e0a48 Mon Sep 17 00:00:00 2001
From: Avinash Kumar Deepak <avinash8655279@gmail.com>
Date: Mon, 16 Feb 2026 23:20:28 +0530
Subject: [PATCH] fix: guard against empty string crash in parser() and bounds
 check in read_FM/read_SM

---
 concore.hpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/concore.hpp b/concore.hpp
index b74ddd7e..28dacac8 100644
--- a/concore.hpp
+++ b/concore.hpp
@@ -240,6 +240,7 @@ class Concore{
      */
     vector<double> parser(string f){
         vector<double> temp;
+        if(f.empty()) return temp;
         string value = "";
     
         //Changing last bracket to comma to use comma as a delimiter
@@ -330,6 +331,10 @@ class Concore{
         s += ins;
 
         vector<double> inval = parser(ins);
+        if(inval.empty())
+            inval = parser(initstr);
+        if(inval.empty())
+            return inval;
         simtime = simtime > inval[0] ? simtime : inval[0];
 
         //returning a string with data excluding simtime
@@ -389,6 +394,10 @@ class Concore{
         s += ins;
 
         vector<double> inval = parser(ins);
+        if(inval.empty())
+            inval = parser(initstr);
+        if(inval.empty())
+            return inval;
         simtime = simtime > inval[0] ? simtime : inval[0];
 
         //returning a string with data excluding simtime