[PATCH][Review request] unix.Malloc checker improvement: +handling new/delete, +memory.MismatchedFree, +memory.MismatchedDelete, +improved display names for allocators/deallocators

[Anna Zaks]

On Mar 28, 2013, at 5:42 PM, Anton Yartsev <anton.yartsev at gmail.com> wrote:

>>> Evolved one more problem to solve: if overloaded standard operator new is defined and is called as a function, then it is not recognized as overloaded operator for some reason. Tests testOpNewArray() and testOpNew() in NewDelete-custom.cpp cover these issue.
>> 
>> You can check if it has to do with redeclarations of the allocator function, but I wouldn't expect that. Definitely something we need to fix before putting out another open-source checker build.
> Addressed the issue. Actually the problem is caused by the fact, that overloaded operator new was inlined and has not been processed by checkPostStmt(const CallExpr) at all as it skips inlined calls.
> What Is the reason for skipping inline calls?
> 

The idea is that if a function has been inlined, it will be modeled through inlining where we will know exactly what it does. 

It is unclear if we should enforce the malloc/free, new/delete rules on inlined functions. For example, in this case, if someone overloaded the operator new, do we want to ensure that delete was called on the object regardless of what new's custom implementation is?

Anna.
> 
> -- 
> Anton

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