These are three linked articles discussing UndefinedBehavior in relation to CeeLanguage and CeePlusPlus, in particular how they are handled by Clang(CeeLanguageFamilyFrontEnd)

* http://blog.llvm.org/2011/05/what-every-c-programmer-should-know.html
* http://blog.llvm.org/2011/05/what-every-c-programmer-should-know_14.html
* http://blog.llvm.org/2011/05/what-every-c-programmer-should-know_21.html

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#47: Don't use C.

       ;-) 

''O.K. but this page is not about all possible advice. This is a reference to some specific information which may be useful to people who do program in C or C++.''
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CeePlusPlusRoadMap (which covers C as well).
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CategoryCee CategoryCpp