6 files changed, 175 insertions, 0 deletions
diff --git a/tests/auto/tools/rcc/data/deduplication/deduplication.expected b/tests/auto/tools/rcc/data/deduplication/deduplication.expected
new file mode 100644
index 00000000000..bd873437b46
--- /dev/null
+++ b/tests/auto/tools/rcc/data/deduplication/deduplication.expected
@@ -0,0 +1,157 @@
+/****************************************************************************
+** Resource object code
+**
+IGNORE:** Created by: The Resource Compiler for Qt version 6.9.0
+**
+** WARNING! All changes made in this file will be lost!
+*****************************************************************************/
+
+#ifdef _MSC_VER
+// disable informational message "function ... selected for automatic inline expansion"
+#pragma warning (disable: 4711)
+#endif
+
+static const unsigned char qt_resource_data[] = {
+  // b.txt
+  0x0,0x0,0x0,0xb,
+  0x62,
+  0x20,0x74,0x65,0x73,0x74,0x20,0x66,0x69,0x6c,0x65,
+    // c_with_a_content.txt
+  0x0,0x0,0x0,0xb,
+  0x61,
+  0x20,0x74,0x65,0x73,0x74,0x20,0x66,0x69,0x6c,0x65,
+    // b.txt
+  0x0,0x0,0x0,0xb,
+  0x62,
+  0x20,0x74,0x65,0x73,0x74,0x20,0x66,0x69,0x6c,0x65,
+  
+};
+
+static const unsigned char qt_resource_name[] = {
+  // files
+  0x0,0x5,
+  0x0,0x6d,0x2,0xc3,
+  0x0,0x66,
+  0x0,0x69,0x0,0x6c,0x0,0x65,0x0,0x73,
+    // b.txt
+  0x0,0x5,
+  0x0,0x65,0x5b,0xf4,
+  0x0,0x62,
+  0x0,0x2e,0x0,0x74,0x0,0x78,0x0,0x74,
+    // c_with_a_content.txt
+  0x0,0x14,
+  0x1,0x61,0x1d,0x34,
+  0x0,0x63,
+  0x0,0x5f,0x0,0x77,0x0,0x69,0x0,0x74,0x0,0x68,0x0,0x5f,0x0,0x61,0x0,0x5f,0x0,0x63,0x0,0x6f,0x0,0x6e,0x0,0x74,0x0,0x65,0x0,0x6e,0x0,0x74,0x0,0x2e,
+  0x0,0x74,0x0,0x78,0x0,0x74,
+    // a.txt
+  0x0,0x5,
+  0x0,0x64,0x5b,0xf4,
+  0x0,0x61,
+  0x0,0x2e,0x0,0x74,0x0,0x78,0x0,0x74,
+    // alias_of_b_compress9.txt
+  0x0,0x18,
+  0xb,0x26,0xf,0xb4,
+  0x0,0x61,
+  0x0,0x6c,0x0,0x69,0x0,0x61,0x0,0x73,0x0,0x5f,0x0,0x6f,0x0,0x66,0x0,0x5f,0x0,0x62,0x0,0x5f,0x0,0x63,0x0,0x6f,0x0,0x6d,0x0,0x70,0x0,0x72,0x0,0x65,
+  0x0,0x73,0x0,0x73,0x0,0x39,0x0,0x2e,0x0,0x74,0x0,0x78,0x0,0x74,
+    // alias_of_b.txt
+  0x0,0xe,
+  0x1,0xa4,0x6d,0x34,
+  0x0,0x61,
+  0x0,0x6c,0x0,0x69,0x0,0x61,0x0,0x73,0x0,0x5f,0x0,0x6f,0x0,0x66,0x0,0x5f,0x0,0x62,0x0,0x2e,0x0,0x74,0x0,0x78,0x0,0x74,
+    // alias_of_b_compress9_dupe.txt
+  0x0,0x1d,
+  0x9,0x4,0x7a,0x14,
+  0x0,0x61,
+  0x0,0x6c,0x0,0x69,0x0,0x61,0x0,0x73,0x0,0x5f,0x0,0x6f,0x0,0x66,0x0,0x5f,0x0,0x62,0x0,0x5f,0x0,0x63,0x0,0x6f,0x0,0x6d,0x0,0x70,0x0,0x72,0x0,0x65,
+  0x0,0x73,0x0,0x73,0x0,0x39,0x0,0x5f,0x0,0x64,0x0,0x75,0x0,0x70,0x0,0x65,0x0,0x2e,0x0,0x74,0x0,0x78,0x0,0x74,
+  
+};
+
+static const unsigned char qt_resource_struct[] = {
+  // :
+  0x0,0x0,0x0,0x0,0x0,0x2,0x0,0x0,0x0,0x1,0x0,0x0,0x0,0x1,
+0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
+  // :/files
+  0x0,0x0,0x0,0x0,0x0,0x2,0x0,0x0,0x0,0x6,0x0,0x0,0x0,0x2,
+0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
+  // :/files/a.txt
+  0x0,0x0,0x0,0x4e,0x0,0x0,0x0,0x0,0x0,0x1,0x0,0x0,0x0,0xf,
+TIMESTAMP:files/a.txt
+  // :/files/b.txt
+  0x0,0x0,0x0,0x10,0x0,0x0,0x0,0x0,0x0,0x1,0x0,0x0,0x0,0x0,
+TIMESTAMP:files/b.txt
+  // :/files/c_with_a_content.txt
+  0x0,0x0,0x0,0x20,0x0,0x0,0x0,0x0,0x0,0x1,0x0,0x0,0x0,0xf,
+TIMESTAMP:files/c_with_a_content.txt
+  // :/files/alias_of_b.txt
+  0x0,0x0,0x0,0x94,0x0,0x0,0x0,0x0,0x0,0x1,0x0,0x0,0x0,0x0,
+TIMESTAMP:files/b.txt
+  // :/files/alias_of_b_compress9_dupe.txt
+  0x0,0x0,0x0,0xb6,0x0,0x0,0x0,0x0,0x0,0x1,0x0,0x0,0x0,0x1e,
+TIMESTAMP:files/b.txt
+  // :/files/alias_of_b_compress9.txt
+  0x0,0x0,0x0,0x5e,0x0,0x0,0x0,0x0,0x0,0x1,0x0,0x0,0x0,0x1e,
+TIMESTAMP:files/b.txt
+
+};
+
+#ifdef QT_NAMESPACE
+#  define QT_RCC_PREPEND_NAMESPACE(name) ::QT_NAMESPACE::name
+#  define QT_RCC_MANGLE_NAMESPACE0(x) x
+#  define QT_RCC_MANGLE_NAMESPACE1(a, b) a##_##b
+#  define QT_RCC_MANGLE_NAMESPACE2(a, b) QT_RCC_MANGLE_NAMESPACE1(a,b)
+#  define QT_RCC_MANGLE_NAMESPACE(name) QT_RCC_MANGLE_NAMESPACE2( \
+        QT_RCC_MANGLE_NAMESPACE0(name), QT_RCC_MANGLE_NAMESPACE0(QT_NAMESPACE))
+#else
+#   define QT_RCC_PREPEND_NAMESPACE(name) name
+#   define QT_RCC_MANGLE_NAMESPACE(name) name
+#endif
+
+#if defined(QT_INLINE_NAMESPACE)
+inline namespace QT_NAMESPACE {
+#elif defined(QT_NAMESPACE)
+namespace QT_NAMESPACE {
+#endif
+
+bool qRegisterResourceData(int, const unsigned char *, const unsigned char *, const unsigned char *);
+bool qUnregisterResourceData(int, const unsigned char *, const unsigned char *, const unsigned char *);
+
+#ifdef QT_NAMESPACE
+}
+#endif
+
+int QT_RCC_MANGLE_NAMESPACE(qInitResources)();
+int QT_RCC_MANGLE_NAMESPACE(qInitResources)()
+{
+    int version = 3;
+    QT_RCC_PREPEND_NAMESPACE(qRegisterResourceData)
+        (version, qt_resource_struct, qt_resource_name, qt_resource_data);
+    return 1;
+}
+
+int QT_RCC_MANGLE_NAMESPACE(qCleanupResources)();
+int QT_RCC_MANGLE_NAMESPACE(qCleanupResources)()
+{
+    int version = 3;
+    QT_RCC_PREPEND_NAMESPACE(qUnregisterResourceData)
+       (version, qt_resource_struct, qt_resource_name, qt_resource_data);
+    return 1;
+}
+
+#ifdef __clang__
+#   pragma clang diagnostic push
+#   pragma clang diagnostic ignored "-Wexit-time-destructors"
+#endif
+
+namespace {
+   struct initializer {
+       initializer() { QT_RCC_MANGLE_NAMESPACE(qInitResources)(); }
+       ~initializer() { QT_RCC_MANGLE_NAMESPACE(qCleanupResources)(); }
+   } dummy;
+}
+
+#ifdef __clang__
+#   pragma clang diagnostic pop
+#endif
diff --git a/tests/auto/tools/rcc/data/deduplication/deduplication.qrc b/tests/auto/tools/rcc/data/deduplication/deduplication.qrc
new file mode 100644
index 00000000000..fd8a776503e
--- /dev/null
+++ b/tests/auto/tools/rcc/data/deduplication/deduplication.qrc
@@ -0,0 +1,10 @@
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource>
+   <file>files/a.txt</file>
+   <file>files/b.txt</file>
+   <file alias="files/alias_of_b.txt">files/b.txt</file>
+   <file>files/c_with_a_content.txt</file>
+   <file alias="files/alias_of_b_compress9.txt" compress="9">files/b.txt</file>
+   <file alias="files/alias_of_b_compress9_dupe.txt" compress="9">files/b.txt</file>
+</qresource>
+</RCC>
diff --git a/tests/auto/tools/rcc/data/deduplication/files/a.txt b/tests/auto/tools/rcc/data/deduplication/files/a.txt
new file mode 100644
index 00000000000..abd91bd4652
--- /dev/null
+++ b/tests/auto/tools/rcc/data/deduplication/files/a.txt
@@ -0,0 +1 @@
+a test file
+\ No newline at end of file
diff --git a/tests/auto/tools/rcc/data/deduplication/files/b.txt b/tests/auto/tools/rcc/data/deduplication/files/b.txt
new file mode 100644
index 00000000000..01e4d76fc57
--- /dev/null
+++ b/tests/auto/tools/rcc/data/deduplication/files/b.txt
@@ -0,0 +1 @@
+b test file
+\ No newline at end of file
diff --git a/tests/auto/tools/rcc/data/deduplication/files/c_with_a_content.txt b/tests/auto/tools/rcc/data/deduplication/files/c_with_a_content.txt
new file mode 100644
index 00000000000..abd91bd4652
--- /dev/null
+++ b/tests/auto/tools/rcc/data/deduplication/files/c_with_a_content.txt
@@ -0,0 +1 @@
+a test file
+\ No newline at end of file
diff --git a/tests/auto/tools/rcc/tst_rcc.cpp b/tests/auto/tools/rcc/tst_rcc.cpp
index f5edfbcaa51..ba7e5841185 100644
--- a/tests/auto/tools/rcc/tst_rcc.cpp
+++ b/tests/auto/tools/rcc/tst_rcc.cpp
@@ -152,6 +152,11 @@ void tst_rcc::rcc_data()
 
     QTest::newRow("legal") << m_dataPath + QLatin1StringView("/legal")
                                << "legal.qrc" << "rcc_legal.cpp";
+
+    if (sizeof(size_t) == 8) {
+        const QString deduplicationPath = m_dataPath + QLatin1String("/deduplication");
+        QTest::newRow("deduplication") << deduplicationPath << "deduplication.qrc" << "deduplication.expected";
+    }
 }
 
 static QStringList readLinesFromFile(const QString &fileName,