ndb -

  fix ndb-violations of strict aliasing found by gcc4.1
  (crashes in ndb_dd_*)


storage/ndb/src/kernel/blocks/dbdict/Dbdict.cpp:
  Fix strict-aliasing
storage/ndb/src/kernel/vm/KeyTable2Ref.hpp:
  Fix strict-aliasing
storage/ndb/src/kernel/vm/Pool.hpp:
  Fix strict-aliasing

storage/ndb/src/kernel/blocks/dbdict/Dbdict.cpp

@@ -7295,7 +7295,7 @@ void Dbdict::execGET_TABINFOREQ(Signal* signal)
   if(objEntry->m_tableType==DictTabInfo::Datafile)
   {
     jam();
-    GetTabInfoReq *req= (GetTabInfoReq*)signal->theData;
+    GetTabInfoReq *req= (GetTabInfoReq*)signal->getDataPtrSend();
     req->senderData= c_retrieveRecord.retrievePage;
     req->senderRef= reference();
     req->requestType= GetTabInfoReq::RequestById;
@@ -7307,7 +7307,7 @@ void Dbdict::execGET_TABINFOREQ(Signal* signal)
   else if(objEntry->m_tableType==DictTabInfo::LogfileGroup)
   {
     jam();
-    GetTabInfoReq *req= (GetTabInfoReq*)signal->theData;
+    GetTabInfoReq *req= (GetTabInfoReq*)signal->getDataPtrSend();
     req->senderData= c_retrieveRecord.retrievePage;
     req->senderRef= reference();
     req->requestType= GetTabInfoReq::RequestById;

storage/ndb/src/kernel/vm/KeyTable2Ref.hpp

@@ -32,19 +32,33 @@ public:
   bool find(Ptr<T>& ptr, Uint32 key) const {
     U rec;
     rec.key = key;
-    return m_ref.find(*(Ptr<U>*)&ptr, rec);
+    Ptr<U> tmp;
+    bool ret = m_ref.find(tmp, rec);
+    ptr.i = tmp.i;
+    ptr.p = static_cast<T*>(tmp.p);
+    return ret;
   }
   
   bool seize(Ptr<T> & ptr) {
-    return m_ref.seize(*(Ptr<U>*)&ptr);
+    Ptr<U> tmp;
+    bool ret = m_ref.seize(tmp);
+    ptr.i = tmp.i;
+    ptr.p = static_cast<T*>(tmp.p);
+    return ret;
   }
   
   void add(Ptr<T> & ptr) {
-    m_ref.add(*(Ptr<U>*)&ptr);
+    Ptr<U> tmp;
+    tmp.i = ptr.i;
+    tmp.p = static_cast<U*>(ptr.p);
+    m_ref.add(tmp);
   }
   
   void release(Ptr<T> & ptr) {
-    m_ref.release(*(Ptr<U>*)&ptr);
+    Ptr<U> tmp;
+    tmp.i = ptr.i;
+    tmp.p = static_cast<U*>(ptr.p);
+    m_ref.release(tmp);
   }
 };
 

storage/ndb/src/kernel/vm/Pool.hpp

@@ -324,7 +324,10 @@ inline
 void
 RecordPool<T, P>::release(Ptr<T> ptr)
 {
-  m_pool.release(*(Ptr<void>*)&ptr);
+  Ptr<void> tmp;
+  tmp.i = ptr.i;
+  tmp.p = ptr.p;
+  m_pool.release(tmp);
 }
 
 #endif