mstorsjo wrote:
This change broke building Qt (tested with 6.8), ending up with errors like
this:
```
qtbase/src/corelib/kernel/qcoreapplication.cpp:2946:78: error: 'this' cannot be
used in a static member function declaration
2946 | : slotObject(std::move(slotObject)), context(context ?
context : this)
|
^
qtbase/src/corelib/kernel/qobjectdefs_impl.h:405:23: note: in instantiation of
template class 'QtPrivate::CallableHelper<void (PermissionReceiver::*)(const
QPermission &)>' requested here
405 | struct Callable : CallableHelper<Func, Args...>::Type
| ^
qtbase/src/corelib/kernel/qobjectdefs.h:437:38: note: in instantiation of
template class 'QtPrivate::Callable<void (PermissionReceiver::*)(const
QPermission &)>' requested here
437 | typename QtPrivate::Callable<Func>::ReturnType *ret)
| ^
qtbase/src/corelib/kernel/qcoreapplication.cpp:2980:13: note: while
substituting deduced template arguments into function template 'invokeMethod'
[with Func = void (PermissionReceiver::*)(const QPermission &)]
2980 | QMetaObject::invokeMethod(receiver,
| ^
```
This issue also persists on the latest git main as of right now.
I've reduced the issue down to the following small reproducer:
```c++
template <typename Func> struct CallableHelper {
static auto Resolve() -> Func;
};
struct QIODevice {
void d_func() { d_ptr; }
int d_ptr;
};
struct Callable : CallableHelper<void (QIODevice::*)()> {};
```
Reproducible with e.g. `clang -target x86_64-linux-gnu -c repro.cpp`
(presumably the same way for any target).
https://github.com/llvm/llvm-project/pull/132401
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