Details
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Bug
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Resolution: Done
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P2: Important
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5.8.0
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None
Description
Hi guys. 
After upgrading from Qt 5.7.1 to 5.8 moc started to confuse namespaces and generate weird code. I reverted from using C++17 syntax for nested namespaces about which moc also complained, but I still get non-compilable results from MOC. The same exact code works in moc 5.7.1.
Attaching moc-generated sources from versions 5.8 (broken), 5.7.1 (which works okay, even accepts C+17-style "namespace a::b::c") and complete source (g+ -E) for the moc.
Those are the errors generated:
MOC build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc
/usr/bin/moc-qt5 xefis/support/devices/ht16k33.h -o build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc
g++ -fPIC -O4 -g -c -std=c++17 -Wall -Wall -Wextra -Wunused -Wunused-function -Wunused-label -Wnoexcept -fstrict-aliasing -Wstrict-aliasing=3 -fnothrow-opt -pedantic-errors -pthread -rdynamic -I. -Ilib -finline -funroll-loops -fomit-frame-pointer -DQT_NO_DEBUG -DCXXFLAGS='"-fPIC -O4 -g -c -std=c++17 -Wall -Wall -Wextra -Wunused -Wunused-function -Wunused-label -Wnoexcept -fstrict-aliasing -Wstrict-aliasing=3 -fnothrow-opt -pedantic-errors -pthread -rdynamic -I. -Ilib -finline -funroll-loops -fomit-frame-pointer"' -isystem /usr/include/qt/QtNetwork -isystem /usr/include/qt -isystem /usr/include/qt/QtXml -isystem /usr/include/qt -isystem /usr/include/qt/QtWidgets -isystem /usr/include/qt -isystem /usr/include/qt/QtGui -isystem /usr/include/qt -isystem /usr/include/qt/QtCore -isystem /usr/include/qt -DXEFIS_ENABLE_ASSERT -E xefis/support/devices/ht16k33.h -o build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc.E
C++ build/x86_64/mocs/xefis/support/devices/ht16k33.moc.o
g++ -fPIC -O4 -g -c -std=c++17 -Wall -Wall -Wextra -Wunused -Wunused-function -Wunused-label -Wnoexcept -fstrict-aliasing -Wstrict-aliasing=3 -fnothrow-opt -pedantic-errors -pthread -rdynamic -I. -Ilib -finline -funroll-loops -fomit-frame-pointer -DQT_NO_DEBUG -DCXXFLAGS='"-fPIC -O4 -g -c -std=c++17 -Wall -Wall -Wextra -Wunused -Wunused-function -Wunused-label -Wnoexcept -fstrict-aliasing -Wstrict-aliasing=3 -fnothrow-opt -pedantic-errors -pthread -rdynamic -I. -Ilib -finline -funroll-loops -fomit-frame-pointer"' -isystem /usr/include/qt/QtNetwork -isystem /usr/include/qt -isystem /usr/include/qt/QtXml -isystem /usr/include/qt -isystem /usr/include/qt/QtWidgets -isystem /usr/include/qt -isystem /usr/include/qt/QtGui -isystem /usr/include/qt -isystem /usr/include/qt/QtCore -isystem /usr/include/qt -DXEFIS_ENABLE_ASSERT build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc -o build/x86_64/mocs/xefis/support/devices/ht16k33.moc.o
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:72:17: error: 'si::units::xf' has not been declared
void si::units::xf::HT16K33::qt_static_metacall(QObject *_o, QMetaObject::Call _c, int _id, void **_a)
^~
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc: In function 'void qt_static_metacall(QObject*, QMetaObject::Call, int, void**)':
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:75:9: error: 'HT16K33' was not declared in this scope
HT16K33 *_t = static_cast<HT16K33 *>(_o);
^~~~~~~
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:75:9: note: suggested alternatives:
In file included from build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:9:0:
build/x86_64/mocs/xefis/support/devices/../../../../../../xefis/support/devices/ht16k33.h:39:7: note: 'xf::HT16K33'
class HT16K33: public QObject
^~~~~~~
build/x86_64/mocs/xefis/support/devices/../../../../../../xefis/support/devices/ht16k33.h:39:7: note: 'xf::HT16K33'
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:75:18: error: '_t' was not declared in this scope
HT16K33 *_t = static_cast<HT16K33 *>(_o);
^~
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:75:35: error: 'HT16K33' does not name a type
HT16K33 *_t = static_cast<HT16K33 *>(_o);
^~~~~~~
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:75:43: error: expected '>' before '*' token
HT16K33 *_t = static_cast<HT16K33 *>(_o);
^
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:75:43: error: expected '(' before '*' token
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:75:44: error: expected primary-expression before '>' token
HT16K33 *_t = static_cast<HT16K33 *>(_o);
^
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:75:49: error: expected ')' before ';' token
HT16K33 *_t = static_cast<HT16K33 *>(_o);
^
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc: At global scope:
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:87:30: error: 'si::units::xf' has not been declared
const QMetaObject si::units::xf::HT16K33::staticMetaObject = {
^~
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:93:31: error: 'si::units::xf' has not been declared
const QMetaObject *si::units::xf::HT16K33::metaObject() const
^~
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:93:57: error: non-member function 'const QMetaObject* metaObject()' cannot have cv-qualifier
const QMetaObject *si::units::xf::HT16K33::metaObject() const
^~~~~
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc: In function 'const QMetaObject* metaObject()':
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:95:21: error: 'QScopedPointer<QObjectData> QObject::d_ptr' is protected within this context
return QObject::d_ptr->metaObject ? QObject::d_ptr->dynamicMetaObject() : &staticMetaObject;
^~~~~
In file included from /usr/include/qt/QtCore/QObject:1:0,
from build/x86_64/mocs/xefis/support/devices/../../../../../../xefis/support/devices/ht16k33.h:24,
from build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:9:
/usr/include/qt/QtCore/qobject.h:423:33: note: declared protected here
QScopedPointer<QObjectData> d_ptr;
^~~~~
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:95:21: error: invalid use of non-static data member 'QObject::d_ptr'
return QObject::d_ptr->metaObject ? QObject::d_ptr->dynamicMetaObject() : &staticMetaObject;
^~~~~
In file included from /usr/include/qt/QtCore/QObject:1:0,
from build/x86_64/mocs/xefis/support/devices/../../../../../../xefis/support/devices/ht16k33.h:24,
from build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:9:
/usr/include/qt/QtCore/qobject.h:423:33: note: declared here
QScopedPointer<QObjectData> d_ptr;
^~~~~
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:95:50: error: 'QScopedPointer<QObjectData> QObject::d_ptr' is protected within this context
return QObject::d_ptr->metaObject ? QObject::d_ptr->dynamicMetaObject() : &staticMetaObject;
^~~~~
In file included from /usr/include/qt/QtCore/QObject:1:0,
from build/x86_64/mocs/xefis/support/devices/../../../../../../xefis/support/devices/ht16k33.h:24,
from build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:9:
/usr/include/qt/QtCore/qobject.h:423:33: note: declared protected here
QScopedPointer<QObjectData> d_ptr;
^~~~~
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:95:50: error: invalid use of non-static data member 'QObject::d_ptr'
return QObject::d_ptr->metaObject ? QObject::d_ptr->dynamicMetaObject() : &staticMetaObject;
^~~~~
In file included from /usr/include/qt/QtCore/QObject:1:0,
from build/x86_64/mocs/xefis/support/devices/../../../../../../xefis/support/devices/ht16k33.h:24,
from build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:9:
/usr/include/qt/QtCore/qobject.h:423:33: note: declared here
QScopedPointer<QObjectData> d_ptr;
^~~~~
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc: At global scope:
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:98:18: error: 'si::units::xf' has not been declared
void *si::units::xf::HT16K33::qt_metacast(const char *_clname)
^~
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc: In function 'void* qt_metacast(const char*)':
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:102:47: error: 'HT16K33' does not name a type
return static_cast<void*>(const_cast< HT16K33*>(this));
^~~~~~~
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:102:54: error: expected '>' before '*' token
return static_cast<void*>(const_cast< HT16K33*>(this));
^
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:102:54: error: expected '(' before '*' token
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:102:55: error: expected primary-expression before '>' token
return static_cast<void*>(const_cast< HT16K33*>(this));
^
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:102:57: error: invalid use of 'this' in non-member function
return static_cast<void*>(const_cast< HT16K33*>(this));
^~~~
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:102:63: error: expected ')' before ';' token
return static_cast<void*>(const_cast< HT16K33*>(this));
^
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:103:40: error: cannot call member function 'virtual void* QObject::qt_metacast(const char*)' without object
return QObject::qt_metacast(_clname);
^
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc: At global scope:
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:106:16: error: 'si::units::xf' has not been declared
int si::units::xf::HT16K33::qt_metacall(QMetaObject::Call _c, int _id, void **_a)
^~
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc: In function 'int qt_metacall(QMetaObject::Call, int, void**)':
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:108:43: error: cannot call member function 'virtual int QObject::qt_metacall(QMetaObject::Call, int, void**)' without object
_id = QObject::qt_metacall(_c, _id, _a);
^
build/x86_64/mocs/xefis/support/devices/ht16k33.moc.cc:113:32: error: invalid use of 'this' in non-member function
qt_static_metacall(this, _c, _id, _a);
^~~~
make[2]: *** [Makefile:280: build/x86_64/mocs/xefis/support/devices/ht16k33.moc.o] Error 1
Attachments
| For Gerrit Dashboard: QTBUG-59351 | ||||||
|---|---|---|---|---|---|---|
| # | Subject | Branch | Project | Status | CR | V |
| 187820,4 | moc: Fix parsing of digit separator | 5.9 | qt/qtbase | Status: MERGED | +2 | 0 |