https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104173
Bug ID: 104173
Summary: [12 Regression] wrong overload resolution for
ref-qualifiers
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Keywords: rejects-valid
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: redi at gcc dot gnu.org
Target Milestone: ---
struct QString
{
QString toLower() const&;
QString toLower() &&;
};
struct QCoreApplication
{
static QCoreApplication* self;
static QCoreApplication *instance() { return self; }
static QString applicationName();
};
template <typename HandlerType>
class WorkerPool {
public:
WorkerPool();
};
template <typename HandlerType>
WorkerPool<HandlerType>::WorkerPool()
{
QCoreApplication::instance()
->applicationName().toLower();
}
WorkerPool<int> w;
qual.C: In instantiation of 'WorkerPool<HandlerType>::WorkerPool() [with
HandlerType = int]':
qual.C:27:17: required from here
qual.C:24:32: error: passing 'QString' as 'this' argument discards qualifiers
[-fpermissive]
23 | QCoreApplication::instance()
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
24 | ->applicationName().toLower();
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~
qual.C:4:11: note: in call to 'QString QString::toLower() &&'
4 | QString toLower() &&;
| ^~~~~~~
