Increase Visual Studio warning level to Level4

Fixes #223.

1 files changed, 4 insertions, 4 deletions

diff --git a/php/src/php7/Operation.cpp b/php/src/php7/Operation.cpp
index 2a460c44285..386f065e9e1 100644
--- a/php/src/php7/Operation.cpp
+++ b/php/src/php7/Operation.cpp
@@ -96,7 +96,7 @@ typedef IceUtil::Handle<OperationI> OperationIPtr;
 //
 // The base class for client-side invocations.
 //
-class Invocation : public virtual IceUtil::Shared
+class Invocation : public IceUtil::Shared
 {
 public:
 
@@ -115,7 +115,7 @@ typedef IceUtil::Handle<Invocation> InvocationPtr;
 // TypedInvocation uses the information in the given operation to validate, marshal, and unmarshal
 // parameters and exceptions.
 //
-class TypedInvocation : public virtual Invocation
+class TypedInvocation : public Invocation
 {
 public:
 
@@ -135,7 +135,7 @@ protected:
 //
 // A synchronous typed invocation.
 //
-class SyncTypedInvocation : public virtual TypedInvocation
+class SyncTypedInvocation : public TypedInvocation
 {
 public:
 
@@ -717,7 +717,7 @@ IcePHP::TypedInvocation::checkTwowayOnly(const Ice::ObjectPrx& proxy) const
 //
 IcePHP::SyncTypedInvocation::SyncTypedInvocation(const Ice::ObjectPrx& prx, const CommunicatorInfoPtr& communicator,
                                                  const OperationIPtr& op) :
-    Invocation(prx, communicator), TypedInvocation(prx, communicator, op)
+    TypedInvocation(prx, communicator, op)
 {
 }