[cfe-dev] HOW TO GET smallest AST

[Peter Stirling]

Could you not use the SourceLocation to work out if the declaration was 
in the main file?

On 20/03/15 04:16, Nikola Smiljanic wrote:
> You can't, the AST is built from the preprocessed file. In this 
> specific case you could get away with it by providing a printf 
> declaration and not including stdio.h but this solution doesn't really 
> scale.
>
> On Fri, Mar 20, 2015 at 2:27 PM, kaka <aamen521 at 163.com 
> <mailto:aamen521 at 163.com>> wrote:
>
>
>     a cpp like this:
>     #include<stdio.h>
>     int mian()
>     {
>      printf("aa");
>     }
>
>     when I get the AST of this cpp,
>     All the decl identify ..  in stdio.h
>     included in the AST.
>
>     How Can I get The AST only contain decl I wrote or used.
>
>
>
>
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