0023033: Standard_MMgrOpt::Reallocate behavior must be similar to "realloc"

Changes :
Standard_MMgrOpt::Reallocate has been modified to allocate new memory block if NULL pointer has been passed.

diff --git a/src/Standard/Standard_MMgrOpt.cxx b/src/Standard/Standard_MMgrOpt.cxx
index bcb39e139ced600c17062d3ab8f0a62153b54060..ce8751a6113f5b029159dceb59872ee671bb8147 100755 (executable)
--- a/src/Standard/Standard_MMgrOpt.cxx
+++ b/src/Standard/Standard_MMgrOpt.cxx
@@ -718,6 +718,12 @@ void Standard_MMgrOpt::FreePools()
 Standard_Address Standard_MMgrOpt::Reallocate(Standard_Address&   theStorage,
                                               const Standard_Size theNewSize)
 {
+  // if theStorage == NULL, just allocate new memory block
+  if (!theStorage)
+  {
+    return Allocate(theNewSize);
+  }
+  
   Standard_Size * aBlock = GET_BLOCK(theStorage);
   Standard_Address newStorage = NULL;
 

diff --git a/src/Standard/Standard_MMgrOpt.hxx b/src/Standard/Standard_MMgrOpt.hxx
index d7a626c3f1af17f7dc539a9cdc8c82a7049e69fa..dcbcb4e3d7e9898e5998556fd4e1aa3dc06063e3 100755 (executable)
--- a/src/Standard/Standard_MMgrOpt.hxx
+++ b/src/Standard/Standard_MMgrOpt.hxx
@@ -104,7 +104,8 @@ class Standard_MMgrOpt : public Standard_MMgrRoot
   //! Allocate aSize bytes; see class description above
   Standard_EXPORT virtual Standard_Address Allocate(const Standard_Size aSize);
   
-  //! Reallocate previously allocated aPtr to a new size; aPtr is nullified
+  //! Reallocate previously allocated aPtr to a new size; aPtr is nullified.
+  //! In case that aPtr is null, the function behaves exactly as Allocate.
   Standard_EXPORT virtual Standard_Address Reallocate(Standard_Address& aPtr, 
                                                       const Standard_Size aSize);