openmw: fix build with Qt 6.10 (#455600)

From 0de42e9a1640e74b2c94ce16ecaf7367ece5f4b0 Mon Sep 17 00:00:00 2001

From: elsid <elsid.mail@gmail.com>

Date: Sun, 5 Oct 2025 23:40:17 +0200

Subject: [PATCH] Do not implicitly convert QByteArray to const char*

Operators supporting this conversion can be disabled via

QT_NO_CAST_FROM_BYTEARRAY breaking the build. For example:

https://koschei.fedoraproject.org//package/openmw

https://kojipkgs.fedoraproject.org/work/tasks/5096/137735096/build.log

Backported to OpenMW 0.49.x

Co-authored-by: Sirius902 <10891979+Sirius902@users.noreply.github.com>

---

 apps/opencs/model/world/nestedtableproxymodel.cpp |  4 +++-

 apps/opencs/view/world/util.cpp                   |  5 +++--

 components/files/qtconversion.cpp                 | 11 ++++++-----

 components/vfs/qtconversion.cpp                   | 11 ++++++-----

 4 files changed, 18 insertions(+), 13 deletions(-)

diff --git a/apps/opencs/model/world/nestedtableproxymodel.cpp b/apps/opencs/model/world/nestedtableproxymodel.cpp

index f542ce4def..5278710e4a 100644

--- a/apps/opencs/model/world/nestedtableproxymodel.cpp

+++ b/apps/opencs/model/world/nestedtableproxymodel.cpp

@@ -13,7 +13,9 @@ CSMWorld::NestedTableProxyModel::NestedTableProxyModel(

 {

     const int parentRow = parent.row();

-    mId = std::string(parentModel->index(parentRow, 0).data().toString().toUtf8());

+    const QByteArray utf8 = parentModel->index(parentRow, 0).data().toString().toUtf8();

+

+    mId = std::string(utf8.constData(), utf8.size());

     QAbstractProxyModel::setSourceModel(parentModel);

diff --git a/apps/opencs/view/world/util.cpp b/apps/opencs/view/world/util.cpp

index dfb587cd96..5fd32d78b4 100644

--- a/apps/opencs/view/world/util.cpp

+++ b/apps/opencs/view/world/util.cpp

@@ -363,11 +363,12 @@ void CSVWorld::CommandDelegate::setEditorData(QWidget* editor, const QModelIndex

     {

         if (!variant.isValid())

 #if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)

-            variant = QVariant(editor->property(n).metaType(), (const void*)nullptr);

+            variant = QVariant(editor->property(n.constData()).metaType(), (const void*)nullptr);

+            editor->setProperty(n.constData(), variant);

 #else

             variant = QVariant(editor->property(n).userType(), (const void*)nullptr);

+            editor->setProperty(n, variant);

 #endif

-        editor->setProperty(n, variant);

     }

 }

diff --git a/components/files/qtconversion.cpp b/components/files/qtconversion.cpp

index d56832cb78..ac7ca6ec8b 100644

--- a/components/files/qtconversion.cpp

+++ b/components/files/qtconversion.cpp

@@ -1,8 +1,9 @@

-

 #include "qtconversion.hpp"

 #include <components/misc/strings/conversion.hpp>

+#include <string_view>

+

 QString Files::pathToQString(const std::filesystem::path& path)

 {

     const auto tmp = path.u8string();

@@ -17,12 +18,12 @@ QString Files::pathToQString(std::filesystem::path&& path)

 std::filesystem::path Files::pathFromQString(QStringView path)

 {

-    const auto tmp = path.toUtf8();

-    return std::filesystem::path{ Misc::StringUtils::stringToU8String(tmp) };

+    const QByteArray tmp = path.toUtf8();

+    return std::filesystem::path(Misc::StringUtils::stringToU8String(std::string_view(tmp.constData(), tmp.size())));

 }

 std::filesystem::path Files::pathFromQString(QString&& path)

 {

-    const auto tmp = path.toUtf8();

-    return std::filesystem::path{ Misc::StringUtils::stringToU8String(tmp) };

+    const QByteArray tmp = path.toUtf8();

+    return std::filesystem::path(Misc::StringUtils::stringToU8String(std::string_view(tmp.constData(), tmp.size())));

 }

diff --git a/components/vfs/qtconversion.cpp b/components/vfs/qtconversion.cpp

index 472e3dd0b4..fc8a0fb78e 100644

--- a/components/vfs/qtconversion.cpp

+++ b/components/vfs/qtconversion.cpp

@@ -1,8 +1,9 @@

-

 #include "qtconversion.hpp"

 #include <components/misc/strings/conversion.hpp>

+#include <string_view>

+

 QString VFS::Path::normalizedToQString(NormalizedView path)

 {

     return QString::fromUtf8(path.value().data(), path.value().size());

@@ -15,12 +16,12 @@ QString VFS::Path::normalizedToQString(Normalized&& path)

 VFS::Path::Normalized VFS::Path::normalizedFromQString(QStringView path)

 {

-    const auto tmp = path.toUtf8();

-    return Normalized{ tmp };

+    const QByteArray tmp = path.toUtf8();

+    return Normalized(std::string_view(tmp.constData(), tmp.size()));

 }

 VFS::Path::Normalized VFS::Path::normalizedFromQString(QString&& path)

 {

-    const auto tmp = path.toUtf8();

-    return Normalized{ tmp };

+    const QByteArray tmp = std::move(path).toUtf8();

+    return Normalized(std::string_view(tmp.constData(), tmp.size()));

 }

-- 

2.51.0

    hash = "sha256-Eyjn3jPpo0d7XENg0Ea/3MN60lZBSUAMkz1UtTiIP80=";

  };

  patches = [

    # https://gitlab.com/OpenMW/openmw/-/merge_requests/4941

    # FIXME: Remove after next release

    ./0001-Do-not-implicitly-convert-QByteArray-to-const-char.patch

  ];

  postPatch = ''

    sed '1i#include <memory>' -i components/myguiplatform/myguidatamanager.cpp # gcc12

  ''