From c9022a90895c5611aa7ec171c07f769c44dd5d32 Mon Sep 17 00:00:00 2001
From: GriffinR <griffin.g.richards@gmail.com>
Date: Thu, 29 Aug 2024 00:05:27 -0400
Subject: [PATCH] Fix freeze on mismatched parentheses

---
 src/core/parseutil.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/core/parseutil.cpp b/src/core/parseutil.cpp
index 5448229c..04cdbcc7 100644
--- a/src/core/parseutil.cpp
+++ b/src/core/parseutil.cpp
@@ -241,10 +241,11 @@ QList<Token> ParseUtil::generatePostfix(const QList<Token> &tokens) {
     }
 
     while (!operatorStack.isEmpty()) {
-        if (operatorStack.top().value == "(" || operatorStack.top().value == ")") {
+        Token token = operatorStack.pop();
+        if (token.value == "(" || token.value == ")") {
             recordError("Mismatched parentheses detected in expression!");
         } else {
-            output.append(operatorStack.pop());
+            output.append(token);
         }
     }