Zuhal Altuntaş zuhaltuntas@xxxxxxxxx asked on Mon May 12 10:59:01 GMT 2025 > > I would like to dump AST using GCC in the same manner one can with option > -ast-view using clang. I have tried options such as -fdump-tree-all-raw, > but they do not give the output I want. Is there a way to extract AST of a > program with a GCC option? > > I know that it is possible to extract it with a plugin. If the answer to > above question is no, are there plugins that extract AST that I can use? > Why do you want to extract that AST? For what purposes? Checking coding rules, improve optimizations, adding project specific warnings, etc... In general the AST is GCC specific (think of asm statements -some of them exist inside standard C headers ...- and GCC builtins). In practice (and in the details) it is is even specific to a particular major version of GCC AFAIU your GCC plugin has to be open source. The one I wrote (it is obsolete so you need to work on improving it) could be a starting point: https://github.com/bstarynk/bismon (but I don't maintain it anymore, and you need to improve it a lot) with obsolete documentation on http://www.starynkevitch.net/Basile/bismon-chariot-doc.pdf https://arxiv.org/abs/1109.0779 is also relevant. If static analysis is your major concern see also https://frama-c.com/ and https://www.absint.com/products.htm and of course improve the GCC static analysis with your (open source) plugin. If runtime optimization is your major concern then consider also partial evaluation techniques with runtime code generation (e.g. GNU lightning or asmjit or libjit based). Regards. -- Basile STARYNKEVITCH <basile@xxxxxxxxxxxxxxxxx> 8 rue de la Faïencerie http://starynkevitch.net/Basile/ 92340 Bourg-la-Reine https://github.com/bstarynk France https://github.com/RefPerSys/RefPerSys
