[Openexr-devel] Imf::Attribute compiler warning

[Ken McGaugh]

I'm seeing the following compiler warning under linux with gcc-4.0.2  
when extra warnings are enabled (-Wextra):

    /usr/local/include/OpenEXR/ImfAttribute.h:256: warning: base  
class 'class Imf::Attribute' should be explicitly initialized in the  
copy constructor

The code which triggers this is:

    Imath::M44f mat;
    Imf::Header hdr (720, 486);
    hdr.insert("mat", Imf::M44fAttribute(mat));

The warning goes away if I use an intermediate Imf::M44fAttribute  
object:

    Imath::M44f mat;
    Imf::M44fAttribute matAttr (mat);
    Imf::Header hdr (720, 486);
    hdr.insert("mat", matAttr);

The warning seems benign, but I wanted to check to make sure.  Anybody  
know for sure?

Also, there is a typo in the commented example for ASSERT in  
IexMacros.h.  In the example the order of the arguments is listed  
incorrectly.

Thanks.
--Ken