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0026377: Passing Handle objects as arguments to functions as non-const reference to base type is dangerous

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Operator of cast to non-const reference is declared deprecated to produce compiler warning if used (usually implicitly).

OCCT code is updated to avoid that cast, occurring when function accepting non-const reference to handle is called with handle to derived type.
For that, local variable of argument type is passed instead, and down-cast is used to get it to desired type after the call.
A few occurrences of use of uninitialized variable are corrected.
This commit is contained in:
abv
2016-02-17 17:33:18 +03:00
parent fe9b8ff2f2
commit aa00364da7
59 changed files with 395 additions and 211 deletions
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8
src/TDF/TDF_Attribute.hxx
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@@ -185,6 +185,14 @@ public:
//! this method.
Standard_EXPORT Standard_Boolean FindAttribute (const Standard_GUID& anID, Handle(TDF_Attribute)& anAttribute) const;
//! Safe variant for arbitrary type of argument
template <class T>
Standard_Boolean FindAttribute (const Standard_GUID& theID, Handle(T)& theAttr) const
{
Handle(TDF_Attribute) anAttr = theAttr;
return FindAttribute (theID, anAttr) && ! (theAttr = Handle(T)::DownCast(anAttr)).IsNull();
}
//! Adds an Attribute <other> to the label of
//! <me>.Raises if there is already one of the same
//! GUID fhan <other>.