[Qt-interest] Lots of warning with QtEmbedded-4.5 and gcc-3.4.3

[Abdelrazak Younes]

Hello,

I am trying to compile latest QtEmbedded-4.5 with montavista gcc-3.4.3 
and I get a lot of warning (ex: see below). Are these safe to ignore or 
is a newer gcc required?

I configured Qt with the following:

./configure -embedded arm -xplatform mkspecs/qws/linux-arm-g++ 
-little-endian -prefix 
/home/younes/devel/arm/davinci/filesys/usr/local/Qt 
-L/opt/mv_pro_4.0.1/montavista/pro/devkit/arm/v5t_le/target/lib 
-I/opt/mv_pro_4.0.1/montavista/pro/devkit/arm/v5t_le/include -little-endian

I had to create symlinks for arm_v5t_le-* to arm-linux-* if that is 
important.

Thanks in advance for any hint,
Abdel.

gcc version 3.4.3 (MontaVista 3.4.3-25.0.104.0600975 2006-07-06)

../../include/QtCore/../../src/corelib/tools/qhash.h: In member function 
`typename QHash<K, V>::Node** QHash<K, V>::findNode(const Key&, uint*) 
const [with Key = QModelIndex, T = QPersistentModelIndexData*]': 

../../include/QtCore/../../src/corelib/tools/qhash.h:839:   instantiated 
from `typename QHash<K, V>::iterator QHash<K, V>::find(const Key&) [with 
Key = QModelIndex, T = QPersistentModelIndexData*]' 

../../include/QtCore/private/../../../src/corelib/kernel/qabstractitemmodel_p.h:114: 
   instantiated from here
../../include/QtCore/../../src/corelib/tools/qhash.h:861: warning: 
dereferencing type-punned pointer will break strict-aliasing rules 
 

../../include/QtCore/../../src/corelib/tools/qhash.h: In member function 
`typename QHash<K, V>::Node** QHash<K, V>::findNode(const Key&, uint*) 
const [with Key = QPersistentModelIndex, T = QHashDummyValue]': 

../../include/QtCore/../../src/corelib/tools/qhash.h:845:   instantiated 
from `bool QHash<K, V>::contains(const Key&) const [with Key = 
QPersistentModelIndex, T = QHashDummyValue]' 

../../include/QtCore/../../src/corelib/tools/qset.h:81:   instantiated 
from `bool QSet<V>::contains(const T&) const [with T = 
QPersistentModelIndex]' 

../../include/QtGui/private/../../../src/gui/itemviews/qtreeview_p.h:180: 
   instantiated from here
../../include/QtCore/../../src/corelib/tools/qhash.h:861: warning: 
dereferencing type-punned pointer will break strict-aliasing rules 
 

../../include/QtCore/../../src/corelib/tools/qhash.h: In member function 
`typename QHash<K, V>::Node** QHash<K, V>::findNode(const Key&, uint*) 
const [with Key = QWidget*, T = QHashDummyValue]': 

../../include/QtCore/../../src/corelib/tools/qhash.h:845:   instantiated 
from `bool QHash<K, V>::contains(const Key&) const [with Key = QWidget*, 
T = QHashDummyValue]' 

../../include/QtCore/../../src/corelib/tools/qset.h:81:   instantiated 
from `bool QSet<V>::contains(const T&) const [with T = QWidget*]' 
 

itemviews/qtreeview.cpp:2697:   instantiated from here 

../../include/QtCore/../../src/corelib/tools/qhash.h:861: warning: 
dereferencing type-punned pointer will break strict-aliasing rules