[qt/qt/qtactiveqt]: Summary of bulk changes made

Git repository change summary for qt/qt/qtactiveqt
Pushed by mirror-service into branch '6.12'.
Changed from b3e541dd653765ace07af9f891f7d2b66709cf08 to 694e92c88a9fb1887694abbba0b64106aa97465b
Acknowledgement was received that this change introduces only existing code that has been pushed to another public open source repository.

This change contains the following new commits:

Git commit 7f386672b7632e459baa92b65cdd673f5534d252 by Qt Cherry-pick Bot (on behalf of Oliver Wolff) on 23/07/2026 at 13:22..
qaxbase: Make sure of null termination in sigs, propsigs and props maps

In preparation for QT_ENABLE_STRICT_MODE.

As the implicit conversion to char * is disabled in this mode, we have
to make sure that everything behaves. Make sure that only null
terminated byte arrays are entered into the QMaps. This might be
overprotective but should not cost much.

In doing so we can rely on constData whenever the values from these byte
arrays are used for lookups as char arrays.

The interface was changed because addSignal and addProperty are
exclusively called using QByteArrays. Instead of hardening every calling
site we now make sure that these byte arrays are null terminated inside
the functions.

Task-number: QTBUG-145279
Pick-to: 6.11
Change-Id: I337f888f9e24f293572e651a5fc9b8e1442474fd
Reviewed-by: Marc Mutz <[email protected]>
(cherry picked from commit e1adcf822355de7c4904dd8c487a07f29761371d)
Reviewed-by: Qt Cherry-pick Bot <[email protected]>
https://invent.kde.org/qt/qt/qtactiveqt/-/commit/7f386672b7632e459baa92b65cdd673f5534d252

Git commit 694e92c88a9fb1887694abbba0b64106aa97465b by Qt Cherry-pick Bot (on behalf of Luqiao Chen) on 23/07/2026 at 14:24..
ActiveQt: resolve enum parameter types by unqualified name

Since dumpcpp started qualifying type names with the type library's
namespace (commit 415da4185ffeaf6d1d773e7f390e417a75246ae9, "dumpcpp:
Qualify type names"), a method or property parameter of a COM enum type
is recorded in the meta object fully qualified, e.g. "MyTypeLib::MyEnum",
while the enumerator itself is registered under its unqualified declared
name "MyEnum".

A COM enum has no C++ metatype, so QAxBase converts an enum argument to
int only when QMetaObject::indexOfEnumerator() finds a matching
enumerator. The exact-string lookup failed for the qualified name, so the
argument was never packed into a VARIANT and IDispatch::Invoke rejected
the call with a non-standard HRESULT, reported as "Error calling IDispatch
member <name>: Unknown error". The byref output parameter was left
unpopulated.

Look the enumerator up by its exact name first and, if that misses, retry
with the unqualified tail (after the last "::"), at both enum-lookup
sites, in internalInvoke() and dynamicCallHelper().

That lookup, however, is not always reached: when dumpcpp hoists the enum
to genuine namespace scope (as it does whenever the enum is declared in
the type library itself), the qualified name also resolves to a real,
distinct QMetaType via QMetaType::fromName(), and internalInvoke() used
that unconditionally before ever consulting the meta object's enumerators.
The resulting QVariant, wrapping the enum's own custom metatype instead of
a plain int, then reached QVariantToVARIANT()'s generic fallback for
custom types (id() >= QMetaType::User), which assumes any such type is a
QAxObject-wrapping COM container and blindly reinterprets its raw storage
as a QAxObject**, calling queryInterface() through it and crashing.

Give the enumerator lookup precedence over QMetaType::fromName() in
internalInvoke(), and make the QVariantToVARIANT() fallback recognize
QMetaType::IsEnumeration and pack the value as a plain int instead of
assuming a container, so a resolvable qualified enum type name can no
longer bypass or break the enum handling.

Add a regression test in tests/auto/qaxobjectcom that adds an enum to the
in-process COM test server and round-trips a value through a dumpcpp-
generated method, reproducing both failure modes.

Fixes: QTBUG-148520
Pick-to: 6.11
Change-Id: I0a4473765120b6e76a95c98213bee3c41fd39b99
Reviewed-by: Volker Hilsheimer <[email protected]>
(cherry picked from commit 0c753917886e801dc57c971b7950af267bfae4d9)
Reviewed-by: Qt Cherry-pick Bot <[email protected]>
https://invent.kde.org/qt/qt/qtactiveqt/-/commit/694e92c88a9fb1887694abbba0b64106aa97465b