diff --git a/src/testlib/CMakeLists.txt b/src/testlib/CMakeLists.txt
index 2c33883c96f..0758a46f70a 100644
--- a/src/testlib/CMakeLists.txt
+++ b/src/testlib/CMakeLists.txt
@@ -13,6 +13,7 @@ qt_internal_add_module(Test
     EXCEPTIONS
     SOURCES
         3rdparty/cycle_p.h
+        removed_api.cpp     # keep first
         qabstracttestlogger.cpp qabstracttestlogger_p.h
         qasciikey.cpp
         qbenchmark.cpp qbenchmark.h qbenchmark_p.h
@@ -70,6 +71,8 @@ qt_internal_add_module(Test
         QT_NO_MESSAGELOGCONTEXT
     LIBRARIES
         Qt::CorePrivate
+    NO_PCH_SOURCES
+        removed_api.cpp
     PUBLIC_LIBRARIES
         Qt::Core
     PRIVATE_MODULE_INTERFACE
diff --git a/src/testlib/qtestcase.cpp b/src/testlib/qtestcase.cpp
index 42795fade78..fb2b46d824b 100644
--- a/src/testlib/qtestcase.cpp
+++ b/src/testlib/qtestcase.cpp
@@ -3060,11 +3060,6 @@ char *QTest::toString(const char *str)
 /*! \internal
 */
 char *QTest::toString(const volatile void *p) // Use volatile to match compare_ptr_helper()
-{
-    return QTest::toString(const_cast<const void *>(p));
-}
-
-char *QTest::toString(const void *p)
 {
     char *msg = new char[128];
     qsnprintf(msg, 128, "%p", p);
diff --git a/src/testlib/qtestcase.h b/src/testlib/qtestcase.h
index 1a473823049..632b06fed33 100644
--- a/src/testlib/qtestcase.h
+++ b/src/testlib/qtestcase.h
@@ -402,7 +402,6 @@ namespace QTest
     Q_TESTLIB_EXPORT char *toPrettyUnicode(QStringView string);
     Q_TESTLIB_EXPORT char *toString(const char *);
     Q_TESTLIB_EXPORT char *toString(const volatile void *);
-    Q_TESTLIB_EXPORT char *toString(const void *); // ### FIXME: Qt 7: Remove
     Q_TESTLIB_EXPORT char *toString(const volatile QObject *);
 
     Q_TESTLIB_EXPORT void qInit(QObject *testObject, int argc = 0, char **argv = nullptr);
@@ -495,8 +494,6 @@ namespace QTest
     Q_TESTLIB_EXPORT Qt::Key asciiToKey(char ascii);
     Q_TESTLIB_EXPORT char keyToAscii(Qt::Key key);
 
-    // ### TODO: remove QTestResult::compare() overload that takes char * values
-    // when this overload is removed.
 #if QT_DEPRECATED_SINCE(6, 4)
     QT_DEPRECATED_VERSION_X_6_4("use an overload that takes function_ref as parameters, "
                                 "or an overload that takes only failure message, if you "
diff --git a/src/testlib/removed_api.cpp b/src/testlib/removed_api.cpp
new file mode 100644
index 00000000000..00a53735a08
--- /dev/null
+++ b/src/testlib/removed_api.cpp
@@ -0,0 +1,29 @@
+// Copyright (C) 2021 The Qt Company Ltd.
+// Copyright (C) 2024 Intel Corporation.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+
+#define QT_TESTLIB_BUILD_REMOVED_API
+
+#include "qtest.h"
+
+#if QT_TESTLIB_REMOVED_SINCE(6, 8)
+
+QT_BEGIN_NAMESPACE
+
+namespace QTest {
+
+Q_TESTLIB_EXPORT char *toString(const void *p)
+{
+    const volatile void *ptr = p;
+    return toString(ptr);
+}
+
+} // namespace QTest
+
+QT_END_NAMESPACE
+
+// #include "qotherheader.h"
+// implement removed functions from qotherheader.h
+// order sections alphabetically to reduce chances of merge conflicts
+
+#endif // QT_TESTLIB_REMOVED_SINCE(6, 8)