gistfile1.txt

diff --git a/src/cli/Utils.cpp b/src/cli/Utils.cpp
index efceeab5..dc362845 100644
--- a/src/cli/Utils.cpp
+++ b/src/cli/Utils.cpp
@@ -51,22 +51,22 @@ namespace Utils
     void setDefaultTextStreams()
     {
         auto fd = new QFile();
-        fd->open(stdout, QIODevice::WriteOnly);
+        Q_UNUSED(fd->open(stdout, QIODevice::WriteOnly));
         STDOUT.setDevice(fd);
 
         fd = new QFile();
-        fd->open(stderr, QIODevice::WriteOnly);
+        Q_UNUSED(fd->open(stderr, QIODevice::WriteOnly));
         STDERR.setDevice(fd);
 
         fd = new QFile();
-        fd->open(stdin, QIODevice::ReadOnly);
+        Q_UNUSED(fd->open(stdin, QIODevice::ReadOnly));
         STDIN.setDevice(fd);
 
         fd = new QFile();
 #ifdef Q_OS_WIN
-        fd->open(fopen("nul", "w"), QIODevice::WriteOnly);
+        Q_UNUSED(fd->open(fopen("nul", "w"), QIODevice::WriteOnly));
 #else
-        fd->open(fopen("/dev/null", "w"), QIODevice::WriteOnly);
+        Q_UNUSED(fd->open(fopen("/dev/null", "w"), QIODevice::WriteOnly));
 #endif
         DEVNULL.setDevice(fd);
 
diff --git a/src/core/Database.cpp b/src/core/Database.cpp
index 86470fe1..e9c40c7a 100644
--- a/src/core/Database.cpp
+++ b/src/core/Database.cpp
@@ -524,7 +524,7 @@ bool Database::import(const QString& xmlExportPath, QString* error)
 {
     KdbxXmlReader reader(KeePass2::FILE_VERSION_4);
     QFile file(xmlExportPath);
-    file.open(QIODevice::ReadOnly);
+    Q_UNUSED(file.open(QIODevice::ReadOnly));
 
     reader.readDatabase(&file, this);
 
diff --git a/src/format/KdbxXmlReader.cpp b/src/format/KdbxXmlReader.cpp
index cfc6375d..18794f53 100644
--- a/src/format/KdbxXmlReader.cpp
+++ b/src/format/KdbxXmlReader.cpp
@@ -57,7 +57,7 @@ KdbxXmlReader::KdbxXmlReader(quint32 version, QHash<QString, QByteArray> binaryP
 QSharedPointer<Database> KdbxXmlReader::readDatabase(const QString& filename)
 {
     QFile file(filename);
-    file.open(QIODevice::ReadOnly);
+    Q_UNUSED(file.open(QIODevice::ReadOnly));
     return readDatabase(&file);
 }
 
diff --git a/src/format/KdbxXmlWriter.cpp b/src/format/KdbxXmlWriter.cpp
index a2509fdb..1bf49109 100644
--- a/src/format/KdbxXmlWriter.cpp
+++ b/src/format/KdbxXmlWriter.cpp
@@ -80,7 +80,7 @@ void KdbxXmlWriter::writeDatabase(QIODevice* device,
 void KdbxXmlWriter::writeDatabase(const QString& filename, Database* db)
 {
     QFile file(filename);
-    file.open(QIODevice::WriteOnly | QIODevice::Truncate);
+    Q_UNUSED(file.open(QIODevice::WriteOnly | QIODevice::Truncate));
     writeDatabase(&file, db);
 }
 
diff --git a/tests/util/TemporaryFile.cpp b/tests/util/TemporaryFile.cpp
index 413f0330..0df0dffa 100644
--- a/tests/util/TemporaryFile.cpp
+++ b/tests/util/TemporaryFile.cpp
@@ -31,7 +31,7 @@ TemporaryFile::TemporaryFile(QObject* parent)
     : QFile(parent)
 {
     QTemporaryFile tmp;
-    tmp.open();
+    Q_UNUSED(tmp.open());
     QFile::setFileName(tmp.fileName());
     tmp.close();
 }
@@ -40,7 +40,7 @@ TemporaryFile::TemporaryFile(const QString& templateName, QObject* parent)
     : QFile(parent)
 {
     QTemporaryFile tmp(templateName);
-    tmp.open();
+    Q_UNUSED(tmp.open());
     QFile::setFileName(tmp.fileName());
     tmp.close();
 }