Lot of warnings while building on current debian/sid

Dear friends,

I'm currently working on the package split of pgagent for debian and I
noticed repeated warnings during the build. Someone aware of this?

Cheers,
Raph
wxWidgets package from debian:
libwxgtk2.6-dev version 2.6.3.2.1.1
Warning example:
i486-linux-gnu-g++ -DHAVE_CONFIG_H -I. -I. -I..
-DDATA_DIR=\"/usr/share/pgadmin3/\" -Wall -Wno-non-virtual-dtor
-I../src/include -I../src/agent/include -I../src/slony/include
-I/usr/include/postgresql -I./include -DSSL
-I/usr/lib/wx/include/gtk2-unicode-release-2.6 -I/usr/include/wx-2.6
-DGTK_NO_CHECK_CASTS -D__WXGTK__ -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES
-D_LARGEFILE_SOURCE=1 -DNO_GCC_PRAGMA -O2
-DDATA_DIR=\"/usr/share/pgadmin3/\" -Wall -Wno-non-virtual-dtor
-I../src/include -I../src/agent/include -I../src/slony/include -c -o
frmHelp.o `test -f './frm/frmHelp.cpp' || echo './'`./frm/frmHelp.cpp
/usr/include/wx-2.6/wx/hashmap.h: In member function
'wxLongToLongHashMap_wxImplementation_HashTable::Node**
wxLongToLongHashMap_wxImplementation_HashTable::GetNodePtr(const long
int&) const':
/usr/include/wx-2.6/wx/hashmap.h:705: warning: dereferencing type-punned
pointer will break strict-aliasing rules
/usr/include/wx-2.6/wx/clntdata.h: In member function
'wxShadowObjectMethods_wxImplementation_HashTable::Node**
wxShadowObjectMethods_wxImplementation_HashTable::GetNodePtr(const
wxString&) const':
/usr/include/wx-2.6/wx/clntdata.h:26: warning: dereferencing type-punned
pointer will break strict-aliasing rules
/usr/include/wx-2.6/wx/clntdata.h: In member function
'wxShadowObjectFields_wxImplementation_HashTable::Node**
wxShadowObjectFields_wxImplementation_HashTable::GetNodePtr(const
wxString&) const':
/usr/include/wx-2.6/wx/clntdata.h:31: warning: dereferencing type-punned
pointer will break strict-aliasing rules
/usr/include/wx-2.6/wx/gdicmn.h: In member function
'wxStringToColourHashMap_wxImplementation_HashTable::Node**
wxStringToColourHashMap_wxImplementation_HashTable::GetNodePtr(const
wxString&) const':
/usr/include/wx-2.6/wx/gdicmn.h:476: warning: dereferencing type-punned
pointer will break strict-aliasing rules
/usr/include/wx-2.6/wx/image.h: In member function
'wxImageHistogramBase_wxImplementation_HashTable::Node**
wxImageHistogramBase_wxImplementation_HashTable::GetNodePtr(const long
unsigned int&) const':
/usr/include/wx-2.6/wx/image.h:123: warning: dereferencing type-punned
pointer will break strict-aliasing rules