Fresh binary install of QT5.2.1 for MSVC2010 - qmap.h error
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My app builds fine with QT5.1.1 using msvc2010 (32bit). Installed the binary build of QT5.2.1 for MSVC10 32bit.
Get this error:
C:\Qt\5.2.1\msvc2010\include\QtCore/qmap.h(216) : error C2059: syntax error : '&'
C:\Qt\5.2.1\msvc2010\include\QtCore/qmap.h(212) : while compiling class template member function 'QMapNode<Key,T> *QMapData<Key,T>::createNode(const Key &,const T &,QMapNode<Key,T> *,bool)'
with
[
Key=QString,
T=QVariant
]
C:\Qt\5.2.1\msvc2010\include\QtCore/qmap.h(333) : see reference to class template instantiation 'QMapData<Key,T>' being compiled
with
[
Key=QString,
T=QVariant
]
C:\Qt\5.2.1\msvc2010\include\QtCore/qmap.h(333) : while compiling class template member function 'QMap<Key,T>::QMap(void)'
with
[
Key=QString,
T=QVariant
]
C:\Qt\5.2.1\msvc2010\include\QtCore/qvariant.h(501) : see reference to class template instantiation 'QMap<Key,T>' being compiled
with
[
Key=QString,
T=QVariant
]
C:\Qt\5.2.1\msvc2010\include\QtCore/qmap.h(216) : error C2143: syntax error : missing ';' before ')'
C:\Qt\5.2.1\msvc2010\include\QtCore/qmap.h(216) : error C2143: syntax error : missing ';' before ')'
C:\Qt\5.2.1\msvc2010\include\QtCore/qmap.h(218) : error C2059: syntax error : '&'
C:\Qt\5.2.1\msvc2010\include\QtCore/qmap.h(218) : error C2143: syntax error : missing ';' before ')'
C:\Qt\5.2.1\msvc2010\include\QtCore/qmap.h(218) : error C2143: syntax error : missing ';' before ')' -
It took me some hairs of my head, but I found the problem.
Some library headers in debug mode redefine the 'new' operator in order to catch memory leaks; something like this:@#define new new( _NORMAL_BLOCK, FILE, LINE)@
The problem is with this lines in qmap.h, where they use the new operator in a very unusual way.
@
QT_TRY{
new (&n->key) Key(k); /* !!! /
QT_TRY{
new (&n->value) T(v); / !!! */
@The workaround is to undef the new operator before the qt headers.
@
#undef new
#include "qt_header.h"
@I don't know if it can be considered a bug, but certainly it is source of troubles.
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Hi,
No it's not, generally on Windows you would include Windows specific headers after Qt's
