"Run-Simulator", Compiler, Where can I suppress the error "...may be undefined [-Werror=sequence-point]"?

[Roger.ch]

TouchGFX 4.21.1

When compiling for "Run Simulator" I get the following error message:

Run Simulator

  Generate

    Wrote generated/simulator/gcc/Makefile

    Done

  Generate Assets

    make -f simulator/gcc/Makefile assets -j10 -Wno-error=sequence-point

    Reading ./application.config

    Reading ./target.config

    Done

  Post Generate

    touchgfx update_project --project-file=../EWARM/EVK101008AB.ewp --gui-group-name=Application/User/TouchGFX/gui --generated-group-name=Application/User/TouchGFX/generated && touchgfx update_project --project-file=simulator/msvs/Application.vcxproj && touchgfx update_project --project-file=../MDK-ARM/EVK101008AB.uvprojx --gui-group-name=Application/User/TouchGFX/gui --generated-group-name=Application/User/TouchGFX/generated

    Done

  Compile

    make -f simulator/gcc/Makefile -j10 -Wno-error=sequence-point

    Reading ./application.config

    Reading ./target.config

    Compiling gui/src/model/Model.cpp

    gui/src/model/Model.cpp: In member function 'void Model::tick()':

    gui/src/model/Model.cpp:26:13: error: operation on 'counter' may be undefined [-Werror=sequence-point]

       counter = (counter < COUNTER_PERIODE)?++counter:0;

       ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    cc1plus.exe: all warnings being treated as errors

    generated/simulator/gcc/Makefile:196: recipe for target 'build/MINGW32_NT-6.2/gui/src/model/Model.o' failed

    make[2]: *** [build/MINGW32_NT-6.2/gui/src/model/Model.o] Error 1

    make[2]: *** Waiting for unfinished jobs....

    generated/simulator/gcc/Makefile:155: recipe for target 'generate_assets' failed

    make[1]: *** [generate_assets] Error 2

    simulator/gcc/Makefile:32: recipe for target 'all' failed

    make: *** [all] Error 2

    Failed

  Failed

Where can I set the switch "-Wno-error=sequence-point" so that the compiler does not define this warning as an error and aborts?

I don't want to resolve the warning, I want the warning to not stop compiling.     

[gbm]

You mean you want to have an error in your code? Why not this (assuming that counter is not declared volatile)?

counter = (counter < COUNTER_PERIODE) ? counter + 1 : 0;

If it is volatile - rethink what you are doing.

[KnarfB]

Hope you understand that warning and better resolve it.

Look for a compiler option -Werror and remove that, or add -Wno-error=sequence-point.

See https://gcc.gnu.org/onlinedocs/gcc/Option-Summary.html for all details.

hth

KnarfB

[ferro · Accepted solution]

Try this

https://community.st.com/s/question/0D50X0000AcnZ20SQE/compiler-how-to-remove-warning-as-error

[Roger.ch]

Thank you very much ferro. 

I didn't feel like explaining to colleagues the difference between "++i", "i++", "i += 1" or "i = i + 1".

Sadly enough, GCC had to define a "warning" for this. 

You saved me a lot of time and effort with your competent and solution-oriented answer.

Thank you very much! 

[ferro]

Glad it helped !