Simulink code generation error in: rtwcg_modu​le_reuse_b​uffer_inse​rtion.cpp

Hello Community,

while generating C-Code from Simulink R2019b, I get the following error:

Code generation assertion 'index != -1' failed in 'b:\matlab\src\rtwcg\rtwcg_utils\rtwcg_module_reuse_buffer_insertion.cpp:354'.

Is there any idea what this message means, or, what I can do to avoid this error?

Thanks in advance

Answer 1

[Sourabh]

Hey Jannik,

This might be caused by some issue with internal optimization.

A simple workaround for you is to go to "Configuration parameters > Code Generation > Optimization", check "Specify custom optimizations" and turn off 'in-place bus assignment reuse', which is documented below:

• https://www.mathworks.com/help/releases/R2019b/rtw/ref/perform-inplace-updates-for-bus-assignment-blocks.html

This should not cause significant effect in the efficiency of your model and generated code.

Hope this helps!

[Jannik]

Hi Sourabh,

you are absolutly correct, this is the way to handle the error. Thanks for your time and thanks for sharing the solution with the community.

With best regards,

Jannik