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From: "jeanmichael.celerier at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/67398] Segfault when template static references another template
Date: Sun, 30 Aug 2015 07:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D67398

--- Comment #2 from Jean-Micha=C3=ABl Celerier <jeanmichael.celerier at gma=
il dot com> ---
I now get this error :
/home/jcelerier/i-score/base/plugins/iscore-plugin-scenario/source/Process/=
ScenarioModel.cpp:63:
internal compiler error: in make_decl_rtl, at varasm.c:1313
 constexpr const QMetaObject NotifyingMap<T>::staticMetaObject{
                             ^

if I change the relevant part of the code to this :=20


template<typename T>
struct strdata_t
{
    QByteArrayData data[5]{
        QT_MOC_LITERAL_CUSTOM(0, 0, 12), // "NotifyingMap"
        QT_MOC_LITERAL_CUSTOM(1, 13, 5), // "added"
        QT_MOC_LITERAL_CUSTOM(2, 19, 0), // ""
        QT_MOC_LITERAL_CUSTOM(3, 20, typeLength<T>()), // "T"
        QT_MOC_LITERAL_CUSTOM(4, 21 + typeLength<T>(), 7) // "removed"
    };
    std::array<char, 29 + typeLength<T>()> stringdata0 =3D
            concat("NotifyingMap\0added\0\0", T::className, "\0removed");
};



static const uint staticMetaData[31]{
 // content:
       7,       // revision
       0,       // classname
       0,    0, // classinfo
       2,   14, // methods
       0,    0, // properties
       0,    0, // enums/sets
       0,    0, // constructors
       0,       // flags
       2,       // signalCount

 // signals: name, argc, parameters, tag, flags
       1,    1,   24,    2, 0x06 /* Public */,
       4,    1,   27,    2, 0x06 /* Public */,

 // signals: parameters
    QMetaType::Void, 0x80000000 | 3,    2,
    QMetaType::Void, 0x80000000 | 3,    2,

       0        // eod
};

template<typename T>
constexpr const QMetaObject NotifyingMap<T>::staticMetaObject{
    { &QObject::staticMetaObject,
      strdata_t<T>{}.data,
      staticMetaData,  qt_static_metacall, Q_NULLPTR, Q_NULLPTR }
};
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Subject: [Bug bootstrap/67363] [6 Regression] r227188 breaks build for mingw-w64
Date: Sun, 30 Aug 2015 08:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67363

--- Comment #3 from Eric Gallager <egall at gwmail dot gwu.edu> ---
Or actually, an even simpler solution to the strndup part of the bug would be
to just use xstrndup instead of strndup; then there's no worrying about which
header to add a declaration to, or anything related to that...