Re: Not hitting some breakpoints with CLion macOS

[Anders Broman <a.broman58 () gmail com>]

Den lör 8 dec. 2018 02:44 skrev Jan Venekamp <jan () venekamp net>:

> Hi,
>
> Taking my first steps into Wireshark development, I have successfully
> made a first attempt at writing and running a dissector plugin.
>
> However, I am running into some problems while debugging. It seems that
> some breakpoint are not hit.
>
> First some observations:
> Wireshark #332df92, CLion 2018.3.1, macOS 10.13.6.
> In order to successfully build I have to:
> - Dissable these in CMakeLists.txt: -Wextra-semi -Wcomma
> - Add the following option to cmake (using qt5 from Homebrew):
> -DCMAKE_CXX_FLAGS:STRING=-I/usr/local/opt/qt5/include
> Full cmake command:
> /Applications/CLion.app/Contents/bin/cmake/mac/bin/cmake
> -DCMAKE_BUILD_TYPE=Debug
> -DCMAKE_CXX_FLAGS:STRING=-I/usr/local/opt/qt5/include -G "CodeBlocks -
> Unix Makefiles" /Users/jan/ews/c/wireshark
>
> Then I can build with with CLion and run the wireshark executable. When
> I put a breakpoint on the proto_register function of the plugin I am
> writing it hits just fine and I am able to step through the code. The
> same goes for other plugins. So for example a breakpoint in
> proto_register_wimax in plugins/epan/wimax/packet-wmx.c hits. Or setting
> a breakpoint in main in ui/qt/main.cpp will also hit.
>
> However, when I set a breakpoint in proto_register_ulp (or other
> functions) in epan/dissectors/packet-ulp.c it won't hit. I do not
> understand, Is there something I am missing here? I would really like to
> step through the code of some of these dissectors.
>
> Any help would be greatly appreciated.
>
> Kind regards,
> Jan Venekamp
Debugging the generated dissectors can be a pain. If I remember correctly
you can set breakpoints in the cnf or template file. You can also
regenerate the dissector with an option to not use line numbers relative to
the cnf file. Debug printfs or break points in the ber or per dissectors is
also alternatives.
Regards
Anders

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