File fix-for-null-pointer-dereference-with-gcc6.patch of Package mingw64-kdevplatform4

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File fix-for-null-pointer-dereference-with-gcc6.patch of Package mingw64-kdevplatform4 (Revision 572b6e6f64065e2a181d0396425dff29)

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From: Kevin Funk <kfunk@kde.org>
Date: Tue, 22 Mar 2016 12:05:21 +0000
Subject: Fix null-pointer dereference
References: kde#360707
Upstream: submitted

Fix null-pointer dereference

CCBUG: 360707
---

--- a/language/codecompletion/codecompletionitem.cpp
+++ b/language/codecompletion/codecompletionitem.cpp
@@ -59,8 +59,8 @@
     Q_ASSERT(m_parent == 0);
 
     m_parent = parent;
-    CompletionTreeNode* node = parent->asNode();
-    if( node ) {
+    auto node = parent ? parent->asNode() : nullptr;
+    if (node) {
       m_rowInParent = node->children.count();
     }
 }

--- a/language/duchain/declaration.cpp
+++ b/language/duchain/declaration.cpp
@@ -276,7 +276,7 @@
   ENSURE_CAN_WRITE
   DUCHAIN_D_DYNAMIC(Declaration);
 
-  d->m_type = type->indexed();
+  d->m_type = type ? type->indexed() : IndexedType();
 
   updateCodeModel();
 }

--- a/language/duchain/instantiationinformation.cpp
+++ b/language/duchain/instantiationinformation.cpp
@@ -61,7 +61,7 @@
 }
 
 void InstantiationInformation::addTemplateParameter(KDevelop::AbstractType::Ptr type) {
-  templateParametersList().append(type->indexed());
+  templateParametersList().append(IndexedType(type));
 }
 
 QString InstantiationInformation::toString(bool local) const {

--- a/language/duchain/repositories/typerepository.cpp
+++ b/language/duchain/repositories/typerepository.cpp
@@ -100,7 +100,7 @@
   return &typeRepository();
 }
 
-uint TypeRepository::indexForType(AbstractType::Ptr input) {
+uint TypeRepository::indexForType(const AbstractType::Ptr input) {
   if(!input)
     return 0;

--- a/language/duchain/repositories/typerepository.h
+++ b/language/duchain/repositories/typerepository.h
@@ -29,7 +29,7 @@
 class TypeRepository
 {
 public:
-    static uint indexForType(AbstractType::Ptr input);
+    static uint indexForType(const AbstractType::Ptr input);
     static AbstractType::Ptr typeForIndex(uint index);
     static void increaseReferenceCount(uint index);
     static void decreaseReferenceCount(uint index);

--- a/language/duchain/topducontext.cpp
+++ b/language/duchain/topducontext.cpp
@@ -769,7 +769,6 @@
       m_predecessor = 0;
   }
 
-  //May also be called when this is zero.
   bool alreadyImporting(IndexedQualifiedIdentifier id) {
     ApplyAliasesBuddyInfo* current = this;
     while(current) {
@@ -852,7 +851,7 @@
             continue;
           }
 
-          if(buddy->alreadyImporting( importIdentifier ))
+          if(buddy && buddy->alreadyImporting( importIdentifier ))
             continue; //This import has already been applied to this search
 
           ApplyAliasesBuddyInfo info(1, buddy, importIdentifier);
@@ -928,7 +927,7 @@
             continue;
           }
 
-          if(buddy->alreadyImporting( importIdentifier ))
+          if(buddy && buddy->alreadyImporting( importIdentifier ))
             continue; //This import has already been applied to this search
 
           ApplyAliasesBuddyInfo info(2, buddy, importIdentifier);

--- a/language/duchain/types/abstracttype.cpp
+++ b/language/duchain/types/abstracttype.cpp
@@ -96,7 +96,7 @@
 
 IndexedType AbstractType::indexed() const
 {
-  return IndexedType(TypeRepository::indexForType(AbstractType::Ptr(const_cast<AbstractType*>(this))));
+  return IndexedType(AbstractType::Ptr(const_cast<AbstractType*>(this)));
 }
 
 bool AbstractType::equals(const AbstractType* rhs) const

--- a/language/duchain/types/arraytype.cpp
+++ b/language/duchain/types/arraytype.cpp
@@ -83,7 +83,7 @@
 
 void ArrayType::setElementType(AbstractType::Ptr type)
 {
-  d_func_dynamic()->m_elementType = type->indexed();
+  d_func_dynamic()->m_elementType = IndexedType(type);
 }
 
 QString ArrayType::toString() const
@@ -107,7 +107,7 @@
 void ArrayType::exchangeTypes( TypeExchanger* exchanger )
 {
   TYPE_D_DYNAMIC(ArrayType);
-  d->m_elementType = exchanger->exchange( d->m_elementType.abstractType() )->indexed();
+  d->m_elementType = IndexedType(exchanger->exchange(d->m_elementType.abstractType()));
 }
 
 AbstractType::WhichType ArrayType::whichType() const

--- a/language/duchain/types/containertypes.cpp
+++ b/language/duchain/types/containertypes.cpp
@@ -51,12 +51,12 @@
 
 void ListType::replaceContentType(AbstractType::Ptr newType)
 {
-    d_func_dynamic()->m_contentType = newType->indexed();
+    d_func_dynamic()->m_contentType = IndexedType(newType);
 }
 
 void MapType::replaceKeyType(AbstractType::Ptr newType)
 {
-    d_func_dynamic()->m_keyType = newType->indexed();
+    d_func_dynamic()->m_keyType = IndexedType(newType);
 }
 
 IndexedType ListType::contentType() const

--- a/language/duchain/types/containertypes.h
+++ b/language/duchain/types/containertypes.h
@@ -99,7 +99,7 @@
     void addContentType(AbstractType::Ptr typeToAdd) {
         auto newContentType = TypeUtils::mergeTypes<LanguageUnsureType>(contentType().abstractType(), typeToAdd);
         DUChainWriteLocker lock;
-        d_func_dynamic()->m_contentType = newContentType->indexed();
+        d_func_dynamic()->m_contentType = IndexedType(newContentType);
     };
 
     /**
@@ -175,7 +175,7 @@
     {
         auto newKeyType = TypeUtils::mergeTypes<LanguageUnsureType>(keyType().abstractType(), typeToAdd);
         DUChainWriteLocker lock;
-        d_func_dynamic()->m_keyType = newKeyType->indexed();
+        d_func_dynamic()->m_keyType = IndexedType(newKeyType);
     }
 
     /**

--- a/language/duchain/types/functiontype.cpp
+++ b/language/duchain/types/functiontype.cpp
@@ -85,9 +85,9 @@
 void FunctionType::addArgument(AbstractType::Ptr argument, int index)
 {
   if ( index == -1 )
-    d_func_dynamic()->m_argumentsList().append(argument->indexed());
+    d_func_dynamic()->m_argumentsList().append(IndexedType(argument));
   else
-    d_func_dynamic()->m_argumentsList().insert(index, argument->indexed());
+    d_func_dynamic()->m_argumentsList().insert(index, IndexedType(argument));
 }
 
 void FunctionType::removeArgument(int i)
@@ -97,7 +97,7 @@
 
 void FunctionType::setReturnType(AbstractType::Ptr returnType)
 {
-  d_func_dynamic()->m_returnType = returnType->indexed();
+  d_func_dynamic()->m_returnType = IndexedType(returnType);
 }
 
 AbstractType::Ptr FunctionType::returnType () const
@@ -142,8 +142,8 @@
 {
   TYPE_D_DYNAMIC(FunctionType);
   for (uint i = 0; i < d->m_argumentsSize (); ++i)
-    d->m_argumentsList()[i] = exchanger->exchange( d->m_arguments()[i].abstractType() )->indexed();
-  d->m_returnType = exchanger->exchange(d->m_returnType.abstractType())->indexed();
+    d->m_argumentsList()[i] = IndexedType(exchanger->exchange(d->m_arguments()[i].abstractType()));
+  d->m_returnType = IndexedType(exchanger->exchange(d->m_returnType.abstractType()));
 }
 
 QString FunctionType::partToString( SignaturePart sigPart ) const {

--- a/language/duchain/types/indexedtype.cpp
+++ b/language/duchain/types/indexedtype.cpp
@@ -23,6 +23,13 @@
 
 namespace KDevelop
 {
+
+IndexedType::IndexedType(const AbstractType::Ptr& type)
+  : m_index(TypeRepository::indexForType(type))
+{
+  if(m_index && shouldDoDUChainReferenceCounting(this))
+    TypeRepository::increaseReferenceCount(m_index, this);
+}
 
 IndexedType::IndexedType(uint index) : m_index(index) {
   if(m_index && shouldDoDUChainReferenceCounting(this))

--- a/language/duchain/types/indexedtype.h
+++ b/language/duchain/types/indexedtype.h
@@ -36,11 +36,9 @@
  */
 class KDEVPLATFORMLANGUAGE_EXPORT IndexedType : public ReferenceCountManager {
   public:
-    /// Constructor.
     IndexedType(const IndexedType& rhs);
+    explicit IndexedType(const AbstractType::Ptr& type);
     explicit IndexedType(uint index = 0);
-    // prevent upcasting
-    IndexedType(bool) = delete;
     
     ~IndexedType();

--- a/language/duchain/types/pointertype.cpp
+++ b/language/duchain/types/pointertype.cpp
@@ -70,7 +70,7 @@
 }
 
 void PointerType::exchangeTypes( TypeExchanger* exchanger ) {
-  d_func_dynamic()->m_baseType = exchanger->exchange( d_func()->m_baseType.abstractType() )->indexed();
+  d_func_dynamic()->m_baseType = IndexedType(exchanger->exchange( d_func()->m_baseType.abstractType()));
 }
 
 PointerType::~PointerType()
@@ -84,7 +84,7 @@
 
 void PointerType::setBaseType(AbstractType::Ptr type)
 {
-  d_func_dynamic()->m_baseType = type->indexed();
+  d_func_dynamic()->m_baseType = IndexedType(type);
 }
 
 QString PointerType::toString() const

--- a/language/duchain/types/referencetype.cpp
+++ b/language/duchain/types/referencetype.cpp
@@ -73,7 +73,7 @@
 
 void ReferenceType::setBaseType(AbstractType::Ptr type)
 {
-  d_func_dynamic()->m_baseType = type->indexed();
+  d_func_dynamic()->m_baseType = IndexedType(type);
 }
 
 bool ReferenceType::isRValue() const
@@ -96,7 +96,7 @@
 
 void ReferenceType::exchangeTypes( TypeExchanger* exchanger )
 {
-  d_func_dynamic()->m_baseType = exchanger->exchange( d_func()->m_baseType.abstractType() )->indexed();
+  d_func_dynamic()->m_baseType = IndexedType(exchanger->exchange(d_func()->m_baseType.abstractType()));
 }
 
 QString ReferenceType::toString() const

--- a/language/duchain/types/typealiastype.cpp
+++ b/language/duchain/types/typealiastype.cpp
@@ -58,7 +58,7 @@
 
 void TypeAliasType::setType(AbstractType::Ptr type)
 {
-  d_func_dynamic()->m_type = type->indexed();
+  d_func_dynamic()->m_type = IndexedType(type);
 }
 
 uint TypeAliasType::hash() const
@@ -91,7 +91,7 @@
 }
 
 void TypeAliasType::exchangeTypes(KDevelop::TypeExchanger* exchanger) {
-  d_func_dynamic()->m_type = exchanger->exchange( d_func()->m_type.abstractType() )->indexed();
+  d_func_dynamic()->m_type = IndexedType(exchanger->exchange(d_func()->m_type.abstractType()));
 }

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File fix-for-null-pointer-dereference-with-gcc6.patch of Package mingw64-kdevplatform4 (Revision 572b6e6f64065e2a181d0396425dff29)

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