From 334939324c20103bbf980e712421c468263d6504 Mon Sep 17 00:00:00 2001
From: WerWolv <werwolv98@gmail.com>
Date: Sun, 6 Feb 2022 18:04:33 +0100
Subject: [PATCH] pattern: Fixed use-after-free when accessing arrays through
 an r-value

---
 lib/libimhex/include/hex/pattern_language/ast_node.hpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/lib/libimhex/include/hex/pattern_language/ast_node.hpp b/lib/libimhex/include/hex/pattern_language/ast_node.hpp
index 535b0d1d8..6a913a48d 100644
--- a/lib/libimhex/include/hex/pattern_language/ast_node.hpp
+++ b/lib/libimhex/include/hex/pattern_language/ast_node.hpp
@@ -1556,7 +1556,14 @@ namespace hex::pl {
 
         explicit ASTNodeRValue(Path path) : ASTNode(), m_path(std::move(path)) { }
 
-        ASTNodeRValue(const ASTNodeRValue &) = default;
+        ASTNodeRValue(const ASTNodeRValue &other) {
+            for (auto &part : other.m_path) {
+                if (auto stringPart = std::get_if<std::string>(&part); stringPart != nullptr)
+                    this->m_path.push_back(*stringPart);
+                else if (auto nodePart = std::get_if<ASTNode *>(&part); nodePart != nullptr)
+                    this->m_path.push_back((*nodePart)->clone());
+            }
+        }
 
         ~ASTNodeRValue() override {
             for (auto &part : this->m_path) {