diff -Nru kcodecs-5.55.0/autotests/base64benchmark.cpp kcodecs-5.56.0/autotests/base64benchmark.cpp
--- kcodecs-5.55.0/autotests/base64benchmark.cpp	2019-02-02 23:54:09.000000000 +0000
+++ kcodecs-5.56.0/autotests/base64benchmark.cpp	2019-03-02 13:35:26.000000000 +0000
@@ -99,7 +99,7 @@
             KCodecs::Decoder *decoder = codec->makeDecoder();
             QByteArray::const_iterator inputIt = input.constBegin();
             QByteArray::iterator resultIt = result.begin();
-            decoder->decode(inputIt, input.constEnd(), resultIt, result.end());
+            decoder->decode(inputIt, input.constEnd(), resultIt, result.constEnd());
             result.truncate(resultIt - result.begin());
             delete decoder;
         }
diff -Nru kcodecs-5.55.0/autotests/codectest.cpp kcodecs-5.56.0/autotests/codectest.cpp
--- kcodecs-5.55.0/autotests/codectest.cpp	2019-02-02 23:54:09.000000000 +0000
+++ kcodecs-5.56.0/autotests/codectest.cpp	2019-03-02 13:35:26.000000000 +0000
@@ -40,12 +40,13 @@
     QTest::addColumn<Mode>("mode");
 
     QDir codecBaseDir(QFINDTESTDATA("data"));
-    foreach (const QString &dir, codecBaseDir.entryList(QStringList(), QDir::Dirs | QDir::NoDotAndDotDot,
-             QDir::NoSort)) {
+    const QStringList lst = codecBaseDir.entryList(QStringList(), QDir::Dirs | QDir::NoDotAndDotDot, QDir::NoSort);
+    for (const QString &dir :  lst) {
         if (dir.toLower().startsWith(QLatin1String("codec_"))) {
             const QString codecName = dir.right(dir.size() - 6);
             QDir codecDir(codecBaseDir.path() + QLatin1String("/") + dir);
-            foreach (const QString &file, codecDir.entryList(QStringList(), QDir::Files, QDir::NoSort)) {
+            const QStringList lst2 = codecDir.entryList(QStringList(), QDir::Files, QDir::NoSort);
+            for (const QString &file : lst2) {
                 if (file.toLower().endsWith(QLatin1String(".expected"))) {
                     const QString dataFileNameBase = file.left(file.size() - 9);
                     QFile dataFile(codecDir.path() + QLatin1Char('/') + dataFileNameBase);
diff -Nru kcodecs-5.55.0/autotests/kcharsetstest.cpp kcodecs-5.56.0/autotests/kcharsetstest.cpp
--- kcodecs-5.55.0/autotests/kcharsetstest.cpp	2019-02-02 23:54:09.000000000 +0000
+++ kcodecs-5.56.0/autotests/kcharsetstest.cpp	2019-03-02 13:35:26.000000000 +0000
@@ -24,7 +24,7 @@
 
 static bool encodingNameHasADescription(const QString &encodingName, const QStringList &descriptions)
 {
-    Q_FOREACH (QString description, descriptions)
+    for (const QString &description : descriptions)
         if (description.contains(encodingName)) {
             return true;
         }
@@ -151,7 +151,7 @@
 
     QCOMPARE(singleton->availableEncodingNames().count(), singleton->descriptiveEncodingNames().count());
 
-    Q_FOREACH (QString encodingName, singleton->availableEncodingNames()) {
+    for (const QString &encodingName : singleton->availableEncodingNames()) {
         bool ok = false;
 
         if (encodingName == QLatin1String("ucs2") || encodingName == QLatin1String("ISO 10646-UCS-2")) {
diff -Nru kcodecs-5.55.0/CMakeLists.txt kcodecs-5.56.0/CMakeLists.txt
--- kcodecs-5.55.0/CMakeLists.txt	2019-02-02 23:54:09.000000000 +0000
+++ kcodecs-5.56.0/CMakeLists.txt	2019-03-02 13:35:26.000000000 +0000
@@ -1,10 +1,10 @@
 cmake_minimum_required(VERSION 3.5)
 
-set(KF5_VERSION "5.55.0") # handled by release scripts
+set(KF5_VERSION "5.56.0") # handled by release scripts
 project(KCodecs VERSION ${KF5_VERSION})
 
 include(FeatureSummary)
-find_package(ECM 5.55.0  NO_MODULE)
+find_package(ECM 5.56.0  NO_MODULE)
 set_package_properties(ECM PROPERTIES TYPE REQUIRED DESCRIPTION "Extra CMake Modules." URL "https://projects.kde.org/projects/kdesupport/extra-cmake-modules")
 feature_summary(WHAT REQUIRED_PACKAGES_NOT_FOUND FATAL_ON_MISSING_REQUIRED_PACKAGES)
 
@@ -41,7 +41,8 @@
 if (IS_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/po")
     ecm_install_po_files_as_qm(po)
 endif()
-#add_definitions(-DQT_DISABLE_DEPRECATED_BEFORE=0x060000)
+add_definitions(-DQT_DISABLE_DEPRECATED_BEFORE=0x050d00)
+add_definitions(-DQT_NO_FOREACH)
 
 add_subdirectory(src)
 
diff -Nru kcodecs-5.55.0/debian/changelog kcodecs-5.56.0/debian/changelog
--- kcodecs-5.55.0/debian/changelog	2019-02-13 08:29:41.000000000 +0000
+++ kcodecs-5.56.0/debian/changelog	2019-03-09 16:34:37.000000000 +0000
@@ -1,3 +1,9 @@
+kcodecs (5.56.0-0ubuntu1) disco; urgency=medium
+
+  * New upstream release (5.56.0)
+
+ -- José Manuel Santamaría Lema <panfaust@gmail.com>  Sat, 09 Mar 2019 16:34:37 +0000
+
 kcodecs (5.55.0-0ubuntu1) disco; urgency=medium
 
   * New upstream release (5.55.0)
diff -Nru kcodecs-5.55.0/debian/control kcodecs-5.56.0/debian/control
--- kcodecs-5.55.0/debian/control	2019-02-13 08:29:41.000000000 +0000
+++ kcodecs-5.56.0/debian/control	2019-03-09 16:34:37.000000000 +0000
@@ -6,7 +6,7 @@
 Build-Depends: cmake (>= 3.0~),
                debhelper (>= 11~),
                doxygen,
-               extra-cmake-modules (>= 5.55.0~),
+               extra-cmake-modules (>= 5.56.0~),
                gperf,
                graphviz,
                libqt5sql5-sqlite:native,
diff -Nru kcodecs-5.55.0/po/da/kcodecs5_qt.po kcodecs-5.56.0/po/da/kcodecs5_qt.po
--- kcodecs-5.55.0/po/da/kcodecs5_qt.po	2019-02-02 23:54:09.000000000 +0000
+++ kcodecs-5.56.0/po/da/kcodecs5_qt.po	2019-03-02 13:35:26.000000000 +0000
@@ -2,8 +2,6 @@
 # Copyright (C) YEAR This_file_is_part_of_KDE
 # This file is distributed under the same license as the PACKAGE package.
 #
-# Martin Schlander, 2008.
-# Martin Schlander <mschlander@opensuse.org>, 2008.
 # Martin Schlander <mschlander@opensuse.org>, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015.
 # Keld Simonsen <keld@keldix.com>, 2010.
 msgid ""
diff -Nru kcodecs-5.55.0/po/id/kcodecs5_qt.po kcodecs-5.56.0/po/id/kcodecs5_qt.po
--- kcodecs-5.55.0/po/id/kcodecs5_qt.po	2019-02-02 23:54:09.000000000 +0000
+++ kcodecs-5.56.0/po/id/kcodecs5_qt.po	2019-03-02 13:35:26.000000000 +0000
@@ -16,7 +16,7 @@
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Plural-Forms: nplurals=1; plural=0;\n"
+"Plural-Forms: nplurals=2; plural=n != 1;\n"
 "X-Generator: Lokalize 2.0\n"
 "X-Qt-Contexts: true\n"
 
diff -Nru kcodecs-5.55.0/po/zh_CN/kcodecs5_qt.po kcodecs-5.56.0/po/zh_CN/kcodecs5_qt.po
--- kcodecs-5.55.0/po/zh_CN/kcodecs5_qt.po	2019-02-02 23:54:09.000000000 +0000
+++ kcodecs-5.56.0/po/zh_CN/kcodecs5_qt.po	2019-03-02 13:35:26.000000000 +0000
@@ -13,7 +13,7 @@
 msgid ""
 msgstr ""
 "Project-Id-Version: kdeorg\n"
-"PO-Revision-Date: 2019-01-27 22:57\n"
+"PO-Revision-Date: 2019-02-20 23:16\n"
 "Last-Translator: guoyunhe <i@guoyunhe.me>\n"
 "Language-Team: Chinese Simplified\n"
 "Language: zh_CN\n"
diff -Nru kcodecs-5.55.0/src/kcodecs.cpp kcodecs-5.56.0/src/kcodecs.cpp
--- kcodecs-5.55.0/src/kcodecs.cpp	2019-02-02 23:54:09.000000000 +0000
+++ kcodecs-5.56.0/src/kcodecs.cpp	2019-03-02 13:35:26.000000000 +0000
@@ -62,17 +62,12 @@
 namespace KCodecs
 {
 
-static const char hexChars[16] = {
-    '0', '1', '2', '3', '4', '5', '6', '7',
-    '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
-};
-
 static QList<QByteArray> charsetCache;
 
 
 QByteArray cachedCharset(const QByteArray &name)
 {
-    foreach (const QByteArray &charset, charsetCache) {
+    for (const QByteArray &charset : qAsConst(charsetCache)) {
         if (qstricmp(name.data(), charset.data()) == 0) {
             return charset;
         }
@@ -598,7 +593,10 @@
 {
     // get an encoder:
     QScopedPointer<Encoder> enc(makeEncoder(newline));
-    assert(!enc.isNull());
+    if (enc.isNull()) {
+        qWarning() << "makeEncoder failed for" << name();
+        return false;
+    }
 
     // encode and check for output buffer overflow:
     while (!enc->encode(scursor, send, dcursor, dend)) {
diff -Nru kcodecs-5.55.0/src/kcodecs.h kcodecs-5.56.0/src/kcodecs.h
--- kcodecs-5.55.0/src/kcodecs.h	2019-02-02 23:54:09.000000000 +0000
+++ kcodecs-5.56.0/src/kcodecs.h	2019-03-02 13:35:26.000000000 +0000
@@ -139,8 +139,10 @@
  *
  * @param in   data to be uuencoded
  * @return     uuencoded string.
+ * @deprecated Always returns an empty bytearray.
  */
-KCODECS_EXPORT QByteArray uuencode(const QByteArray &in);
+// TODO KF6 Remove? Or Make uuencode work?
+KCODECS_DEPRECATED_EXPORT QByteArray uuencode(const QByteArray &in);
 
 /**
  * Encodes the given data using the uuencode algorithm.
@@ -155,9 +157,10 @@
  * output array will be lost.
  *
  * @param in   data to be uuencoded.
- * @param out  uudecoded data.
+ * @param out  an empty byte array
  */
-KCODECS_EXPORT void uuencode(const QByteArray &in, QByteArray &out);
+// TODO KF6 Remove? Or Make uuencode work?
+KCODECS_DEPRECATED_EXPORT void uuencode(const QByteArray &in, QByteArray &out);
 
 /**
  * Decodes the given data using the uudecode algorithm.
diff -Nru kcodecs-5.55.0/src/kcodecsqp.cpp kcodecs-5.56.0/src/kcodecsqp.cpp
--- kcodecs-5.55.0/src/kcodecsqp.cpp	2019-02-02 23:54:09.000000000 +0000
+++ kcodecs-5.56.0/src/kcodecsqp.cpp	2019-03-02 13:35:26.000000000 +0000
@@ -371,7 +371,8 @@
             //              "illegally formed soft linebreak or lonely CR!";
             mInsideHexChar = false;
             mExpectLF = false;
-            assert(mAccu == 0);
+            if (mAccu != 0)
+                return false;
         }
 
         if (mInsideHexChar) {
diff -Nru kcodecs-5.55.0/src/probers/nsBig5Prober.cpp kcodecs-5.56.0/src/probers/nsBig5Prober.cpp
--- kcodecs-5.55.0/src/probers/nsBig5Prober.cpp	2019-02-02 23:54:09.000000000 +0000
+++ kcodecs-5.56.0/src/probers/nsBig5Prober.cpp	2019-03-02 13:35:26.000000000 +0000
@@ -35,6 +35,9 @@
 
 nsProbingState nsBig5Prober::HandleData(const char *aBuf, unsigned int aLen)
 {
+    if (aLen == 0)
+        return mState;
+
     nsSMState codingState;
 
     for (unsigned int i = 0; i < aLen; i++) {
diff -Nru kcodecs-5.55.0/src/probers/nsEscSM.cpp kcodecs-5.56.0/src/probers/nsEscSM.cpp
--- kcodecs-5.55.0/src/probers/nsEscSM.cpp	2019-02-02 23:54:09.000000000 +0000
+++ kcodecs-5.56.0/src/probers/nsEscSM.cpp	2019-03-02 13:35:26.000000000 +0000
@@ -183,7 +183,7 @@
     PCK4BITS(eError, eError, eError, eError, eItsMe, eError, eStart, eStart) //40-47
 };
 
-static const unsigned int ISO2022JPCharLenTable[] = {0, 0, 0, 0, 0, 0, 0, 0};
+static const unsigned int ISO2022JPCharLenTable[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
 
 const SMModel ISO2022JPSMModel = {
     {eIdxSft4bits, eSftMsk4bits, eBitSft4bits, eUnitMsk4bits, ISO2022JP_cls },
diff -Nru kcodecs-5.55.0/src/probers/nsEUCJPProber.cpp kcodecs-5.56.0/src/probers/nsEUCJPProber.cpp
--- kcodecs-5.55.0/src/probers/nsEUCJPProber.cpp	2019-02-02 23:54:09.000000000 +0000
+++ kcodecs-5.56.0/src/probers/nsEUCJPProber.cpp	2019-03-02 13:35:26.000000000 +0000
@@ -41,6 +41,9 @@
 
 nsProbingState nsEUCJPProber::HandleData(const char *aBuf, unsigned int aLen)
 {
+    if (aLen == 0)
+        return mState;
+
     nsSMState codingState;
 
     for (unsigned int i = 0; i < aLen; i++) {
diff -Nru kcodecs-5.55.0/src/probers/nsEUCKRProber.cpp kcodecs-5.56.0/src/probers/nsEUCKRProber.cpp
--- kcodecs-5.55.0/src/probers/nsEUCKRProber.cpp	2019-02-02 23:54:09.000000000 +0000
+++ kcodecs-5.56.0/src/probers/nsEUCKRProber.cpp	2019-03-02 13:35:26.000000000 +0000
@@ -36,6 +36,9 @@
 
 nsProbingState nsEUCKRProber::HandleData(const char *aBuf, unsigned int aLen)
 {
+    if (aLen == 0)
+        return mState;
+
     nsSMState codingState;
 
     for (unsigned int i = 0; i < aLen; i++) {
diff -Nru kcodecs-5.55.0/src/probers/nsGB2312Prober.cpp kcodecs-5.56.0/src/probers/nsGB2312Prober.cpp
--- kcodecs-5.55.0/src/probers/nsGB2312Prober.cpp	2019-02-02 23:54:09.000000000 +0000
+++ kcodecs-5.56.0/src/probers/nsGB2312Prober.cpp	2019-03-02 13:35:26.000000000 +0000
@@ -41,6 +41,9 @@
 
 nsProbingState nsGB18030Prober::HandleData(const char *aBuf, unsigned int aLen)
 {
+    if (aLen == 0)
+        return mState;
+
     nsSMState codingState;
 
     for (unsigned int i = 0; i < aLen; i++) {