[cfe-commits] Patch Approval Request

[Sebastian Redl]

Hi,

Attached is a patch that fixes a few places where TryCopyInitialization 
is too lax and allows casts that it shouldn't. In particular, it would 
allow integral/floating/enum to enum, and - because 
isNullPointerConstant used C semantics and treated (void*)0 as a null 
pointer constant, it allowed the expression static_cast<some pointer 
type>((void*)0).

This patch is in preparation of my work on static_cast, which will 
follow as soon as I've got a few remaining points implemented.

Please approve for committing.

Sebastian
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