diff --git a/src/plugins/cpptools/cppcodecompletion.cpp b/src/plugins/cpptools/cppcodecompletion.cpp
index f9ea3b0bbe9..ca1ef24bd4e 100644
--- a/src/plugins/cpptools/cppcodecompletion.cpp
+++ b/src/plugins/cpptools/cppcodecompletion.cpp
@@ -518,7 +518,7 @@ int CppCodeCompletion::startCompletion(TextEditor::ITextEditable *editor)
             if (exprTy->isReferenceType())
                 exprTy = exprTy->asReferenceType()->elementType();
 
-            if (m_completionOperator == T_LPAREN && completeFunction(exprTy, resolvedTypes, context)) {
+            if (m_completionOperator == T_LPAREN && completeConstructorOrFunction(exprTy, resolvedTypes)) {
                 return m_startPosition;
             } else if ((m_completionOperator == T_DOT || m_completionOperator == T_ARROW) &&
                       completeMember(resolvedTypes, context)) {
@@ -551,7 +551,7 @@ int CppCodeCompletion::startCompletion(TextEditor::ITextEditable *editor)
             foreach (const TypeOfExpression::Result &result, results) {
                 if (result.first->isClassType()) {
                     FullySpecifiedType exprTy = result.first;
-                    if (completeConstructors(exprTy->asClassType()))
+                    if (completeConstructorOrFunction(exprTy, QList<TypeOfExpression::Result>()))
                         return m_startPosition;
                     break;
                 }
@@ -563,18 +563,29 @@ int CppCodeCompletion::startCompletion(TextEditor::ITextEditable *editor)
     return -1;
 }
 
-bool CppCodeCompletion::completeFunction(FullySpecifiedType exprTy,
-                                         const QList<TypeOfExpression::Result> &resolvedTypes,
-                                         const LookupContext &)
+bool CppCodeCompletion::completeConstructorOrFunction(FullySpecifiedType exprTy,
+                                                      const QList<TypeOfExpression::Result> &resolvedTypes)
 {
-    if (Class *klass = exprTy->asClassType()) {
-        completeConstructors(klass);
-    } else {
-        ConvertToCompletionItem toCompletionItem(this);
-        Overview o;
-        o.setShowReturnTypes(true);
-        o.setShowArgumentNames(true);
+    ConvertToCompletionItem toCompletionItem(this);
+    Overview o;
+    o.setShowReturnTypes(true);
+    o.setShowArgumentNames(true);
 
+    if (Class *klass = exprTy->asClassType()) {
+        for (unsigned i = 0; i < klass->memberCount(); ++i) {
+            Symbol *member = klass->memberAt(i);
+            if (! member->type()->isFunctionType())
+                continue;
+            else if (! member->identity())
+                continue;
+            else if (! member->identity()->isEqualTo(klass->identity()))
+                continue;
+            if (TextEditor::CompletionItem item = toCompletionItem(member)) {
+                item.m_text = o(member->type(), member->name());
+                m_completions.append(item);
+            }
+        }
+    } else {
         QSet<QString> signatures;
         foreach (TypeOfExpression::Result p, resolvedTypes) {
             FullySpecifiedType ty = p.first;
@@ -594,6 +605,10 @@ bool CppCodeCompletion::completeFunction(FullySpecifiedType exprTy,
         }
     }
 
+    // If there is only one item, show the function argument widget immediately
+    if (m_completions.size() == 1)
+        complete(m_completions.takeFirst());
+
     return ! m_completions.isEmpty();
 }
 
@@ -887,30 +902,6 @@ void CppCodeCompletion::completeClass(const QList<Symbol *> &candidates,
     }
 }
 
-bool CppCodeCompletion::completeConstructors(Class *klass)
-{
-    ConvertToCompletionItem toCompletionItem(this);
-    Overview o;
-    o.setShowReturnTypes(true);
-    o.setShowArgumentNames(true);
-
-    for (unsigned i = 0; i < klass->memberCount(); ++i) {
-        Symbol *member = klass->memberAt(i);
-        if (! member->type()->isFunctionType())
-            continue;
-        else if (! member->identity())
-            continue;
-        else if (! member->identity()->isEqualTo(klass->identity()))
-            continue;
-        if (TextEditor::CompletionItem item = toCompletionItem(member)) {
-            item.m_text = o(member->type(), member->name());
-            m_completions.append(item);
-        }
-    }
-
-    return ! m_completions.isEmpty();
-}
-
 bool CppCodeCompletion::completeQtMethod(CPlusPlus::FullySpecifiedType,
                                          const QList<TypeOfExpression::Result> &results,
                                          const LookupContext &context,
diff --git a/src/plugins/cpptools/cppcodecompletion.h b/src/plugins/cpptools/cppcodecompletion.h
index 02bcdc0f524..79f580236f9 100644
--- a/src/plugins/cpptools/cppcodecompletion.h
+++ b/src/plugins/cpptools/cppcodecompletion.h
@@ -86,9 +86,8 @@ private:
     void addMacros(const CPlusPlus::LookupContext &context);
     void addCompletionItem(CPlusPlus::Symbol *symbol);
 
-    bool completeFunction(CPlusPlus::FullySpecifiedType exprTy,
-                          const QList<CPlusPlus::TypeOfExpression::Result> &,
-                          const CPlusPlus::LookupContext &context);
+    bool completeConstructorOrFunction(CPlusPlus::FullySpecifiedType exprTy,
+                                       const QList<CPlusPlus::TypeOfExpression::Result> &);
 
     bool completeMember(const QList<CPlusPlus::TypeOfExpression::Result> &,
                         const CPlusPlus::LookupContext &context);
diff --git a/src/plugins/projectexplorer/toolchain.h b/src/plugins/projectexplorer/toolchain.h
index 455d480b860..0e7e16c5ffd 100644
--- a/src/plugins/projectexplorer/toolchain.h
+++ b/src/plugins/projectexplorer/toolchain.h
@@ -40,6 +40,7 @@ public:
     enum ToolChainType
     {
         GCC,
+        LinuxICC,
         MinGW,
         MSVC,
         WINCE,
diff --git a/src/plugins/qt4projectmanager/qt4project.cpp b/src/plugins/qt4projectmanager/qt4project.cpp
index 6a27c484b80..492dc2c50d0 100644
--- a/src/plugins/qt4projectmanager/qt4project.cpp
+++ b/src/plugins/qt4projectmanager/qt4project.cpp
@@ -419,7 +419,7 @@ ProjectExplorer::ToolChain *Qt4Project::toolChain(const QString &buildConfigurat
         m_test = ToolChain::createMSVCToolChain(version->msvcVersion());
     } else if(t == ToolChain::WINCE) {
         m_test = ToolChain::createWinCEToolChain(version->msvcVersion(), version->wincePlatform());
-    } else if(t == ToolChain::GCC) {
+    } else if(t == ToolChain::GCC || t == ToolChain::LinuxICC) {
         QStringList list = rootProjectNode()->variableValue(Internal::CxxCompilerVar);
         QString qmake_cxx = list.isEmpty() ? QString::null : list.first();
         Environment env = Environment::systemEnvironment();
@@ -457,8 +457,12 @@ void Qt4Project::updateCodeModel()
     const QString newQtLibsPath = versionInfo.value(QLatin1String("QT_INSTALL_LIBS"));
 
     ToolChain *tc = toolChain(activeBuildConfiguration());
-    QByteArray predefinedMacros = tc->predefinedMacros();
-    QList<HeaderPath> allHeaderPaths = tc->systemHeaderPaths();
+    QByteArray predefinedMacros;
+    QList<HeaderPath> allHeaderPaths;
+    if (tc) {
+        predefinedMacros = tc->predefinedMacros();
+        allHeaderPaths = tc->systemHeaderPaths();
+    }
     foreach (HeaderPath headerPath, allHeaderPaths) {
         if (headerPath.kind() == HeaderPath::FrameworkHeaderPath)
             allFrameworkPaths.append(headerPath.path());
diff --git a/src/plugins/qt4projectmanager/qtversionmanager.cpp b/src/plugins/qt4projectmanager/qtversionmanager.cpp
index 8abc994e919..58f196b3ede 100644
--- a/src/plugins/qt4projectmanager/qtversionmanager.cpp
+++ b/src/plugins/qt4projectmanager/qtversionmanager.cpp
@@ -1191,6 +1191,8 @@ ProjectExplorer::ToolChain::ToolChainType QtVersion::toolchainType() const
         return ProjectExplorer::ToolChain::INVALID;
     else if (spec.startsWith("wince"))
         return ProjectExplorer::ToolChain::WINCE;
+    else if (spec.startsWith("linux-icc"))
+        return ProjectExplorer::ToolChain::LinuxICC;
     else
         return ProjectExplorer::ToolChain::GCC;
 }