From e5f6dc1b14a03b078b69be1c4c3c5819092604c3 Mon Sep 17 00:00:00 2001
From: flow <flowlnlnln@gmail.com>
Date: Fri, 24 Jun 2022 20:09:44 -0300
Subject: [PATCH] fix: aborts when using a Qt build with assertions enabled

Preventing undefined behaviour hooray! :D

Signed-off-by: flow <flowlnlnln@gmail.com>
---
 launcher/minecraft/mod/ModFolderModel.cpp          | 14 +++++++++-----
 launcher/ui/pages/modplatform/ModModel.cpp         |  4 ++++
 launcher/ui/pages/modplatform/flame/FlameModel.cpp |  5 +++++
 .../pages/modplatform/modrinth/ModrinthModel.cpp   |  4 ++++
 .../ui/pages/modplatform/technic/TechnicModel.cpp  |  5 +++++
 5 files changed, 27 insertions(+), 5 deletions(-)

diff --git a/launcher/minecraft/mod/ModFolderModel.cpp b/launcher/minecraft/mod/ModFolderModel.cpp
index ded2d3a2..bc2362a9 100644
--- a/launcher/minecraft/mod/ModFolderModel.cpp
+++ b/launcher/minecraft/mod/ModFolderModel.cpp
@@ -167,12 +167,16 @@ void ModFolderModel::finishUpdate()
     {
         QSet<QString> added = newSet;
         added.subtract(currentSet);
-        beginInsertRows(QModelIndex(), mods.size(), mods.size() + added.size() - 1);
-        for(auto & addedMod: added) {
-            mods.append(newMods[addedMod]);
-            resolveMod(mods.last());
+
+        // When you have a Qt build with assertions turned on, proceeding here will abort the application
+        if (added.size() > 0) {
+            beginInsertRows(QModelIndex(), mods.size(), mods.size() + added.size() - 1);
+            for (auto& addedMod : added) {
+                mods.append(newMods[addedMod]);
+                resolveMod(mods.last());
+            }
+            endInsertRows();
         }
-        endInsertRows();
     }
 
     // update index
diff --git a/launcher/ui/pages/modplatform/ModModel.cpp b/launcher/ui/pages/modplatform/ModModel.cpp
index 4917b890..94b1f099 100644
--- a/launcher/ui/pages/modplatform/ModModel.cpp
+++ b/launcher/ui/pages/modplatform/ModModel.cpp
@@ -219,6 +219,10 @@ void ListModel::searchRequestFinished(QJsonDocument& doc)
         searchState = CanPossiblyFetchMore;
     }
 
+    // When you have a Qt build with assertions turned on, proceeding here will abort the application
+    if (newList.size() == 0)
+        return;
+
     beginInsertRows(QModelIndex(), modpacks.size(), modpacks.size() + newList.size() - 1);
     modpacks.append(newList);
     endInsertRows();
diff --git a/launcher/ui/pages/modplatform/flame/FlameModel.cpp b/launcher/ui/pages/modplatform/flame/FlameModel.cpp
index f1e8a835..b9804681 100644
--- a/launcher/ui/pages/modplatform/flame/FlameModel.cpp
+++ b/launcher/ui/pages/modplatform/flame/FlameModel.cpp
@@ -221,6 +221,11 @@ void Flame::ListModel::searchRequestFinished()
         nextSearchOffset += 25;
         searchState = CanPossiblyFetchMore;
     }
+
+    // When you have a Qt build with assertions turned on, proceeding here will abort the application
+    if (newList.size() == 0)
+        return;
+
     beginInsertRows(QModelIndex(), modpacks.size(), modpacks.size() + newList.size() - 1);
     modpacks.append(newList);
     endInsertRows();
diff --git a/launcher/ui/pages/modplatform/modrinth/ModrinthModel.cpp b/launcher/ui/pages/modplatform/modrinth/ModrinthModel.cpp
index 5018faa2..3633d575 100644
--- a/launcher/ui/pages/modplatform/modrinth/ModrinthModel.cpp
+++ b/launcher/ui/pages/modplatform/modrinth/ModrinthModel.cpp
@@ -290,6 +290,10 @@ void ModpackListModel::searchRequestFinished(QJsonDocument& doc_all)
         searchState = CanPossiblyFetchMore;
     }
 
+    // When you have a Qt build with assertions turned on, proceeding here will abort the application
+    if (newList.size() == 0)
+        return;
+
     beginInsertRows(QModelIndex(), modpacks.size(), modpacks.size() + newList.size() - 1);
     modpacks.append(newList);
     endInsertRows();
diff --git a/launcher/ui/pages/modplatform/technic/TechnicModel.cpp b/launcher/ui/pages/modplatform/technic/TechnicModel.cpp
index 9c9d1e75..742f4f2a 100644
--- a/launcher/ui/pages/modplatform/technic/TechnicModel.cpp
+++ b/launcher/ui/pages/modplatform/technic/TechnicModel.cpp
@@ -217,6 +217,11 @@ void Technic::ListModel::searchRequestFinished()
         return;
     }
     searchState = Finished;
+
+    // When you have a Qt build with assertions turned on, proceeding here will abort the application
+    if (newList.size() == 0)
+        return;
+
     beginInsertRows(QModelIndex(), modpacks.size(), modpacks.size() + newList.size() - 1);
     modpacks.append(newList);
     endInsertRows();