[cfe-dev] creating and walking the AST

josef maxim pohl josef.m.pohl at gmail.com
Tue Oct 11 12:09:48 PDT 2011

Thanks Guoping,
This looks to be exactly what I need.
Thank you,

On Tue, Oct 11, 2011 at 11:22 AM, Guoping Long <longguoping at gmail.com>wrote:

> Hi, Josef
>    I just went through this process several weeks ago. Those tutorials are
> too old to suit new revisions of Clang.
>    Attached is an simple (runnable) program to experiment the uninitialized
> variables analysis (implemented in
> tools/clang/lib/Analysis/UninitializedValues.cpp).
>    Hope this helps.
> -----
> Guoping
> 2011/10/11 josef maxim pohl <josef.m.pohl at gmail.com>
>> Hi there,
>> I have been banging my head against clang for a bit now trying to get a
>> sense of how a few things work.  Hence I have a complete beginner type
>> question.
>> I am simply trying to construct an AST which I can use to do some source
>> transformations.
>> In trying to work through some of the examples and older tutorials I have
>> noticed that many use a preprocessor instance.  With the recent version of
>> clang there seems to be a fundamental difference in the way a preprocessor
>> object is constructed.  My first question is can anyone tell me how to
>> reconcile the old methodology with the new.  (ie does anyone have a decent
>> example of this.)
>> The other approach to constructing an AST, it appears, is through the
>> construction of a CompilerInstance.  However I have only seen this used in
>> plugin operations or in examples that are not constructing an AST.  Are
>> there any good examples of this behavior (operation) in a stand alone
>> application?
>> Please feel free to correct my misguided notions of what is going on and I
>> apologize for the complete beginner questions.
>> Thanks
>> Josef
>> _______________________________________________
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>> cfe-dev at cs.uiuc.edu
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