Generate AST from C source code using Clang

Question

As an academic project, I have to create a front-end for a static analyser. I am new to C/C++ and my main language is Java. Initially I have to use Clang to generate an AST for the input C program. Then I need to create the corresponding CFG where after I will do some other tasks. I am struggling to find any good examples or tutorials of how to generate an AST of a C program. Any thoughts or suggestions of how should I approach this project?

Thanks in advance.

You might want to have a look at this list. Also, libclang may be what you want. — Rakete1111
– Rakete1111, Commented Nov 15, 2017 at 15:18
Unfortunately, I could not find a way to generate a CFG with libclang. Though, it was very useful to understand the process of parsing the source code. :) — GoldenBoyLDN
– GoldenBoyLDN, Commented Nov 22, 2017 at 15:55

Some Who Call Me Tim · Accepted Answer · 2017-11-22 14:31:12Z

2

Post that includes links to Clang AST tutorials and related posts:

http://variousburglarious.com/2017/01/18/getting-started-with-clang-refactoring-tools/

Repository of Clang AST examples, mostly refactoring and analyzing using AST matchers. Nothing to do with CFG, but maybe it will help?

https://github.com/lanl/CoARCT

answered Nov 22, 2017 at 14:31

Some Who Call Me Tim

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2 Comments

GoldenBoyLDN Over a year ago

Thanks a lot for the info. I have also found a good presentation from a lecture: Program Analysis with Clang

Carlo Wood Over a year ago

The top link no longer exists.

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