When I run the C++ code generated by Matlab Coder, different errors ("invalid pointer," "invalid size," etc.) occur only under a small subset of chosen parameter values.

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Yueqian Liang
Yueqian Liang on 18 Mar 2025
Answered: Marie Anna NOVIELLO on 27 Mar 2025
When I run the C++ code generated by Matlab Coder, it works correctly most of the time.
However, when some parameter values are used, errors occur, and these errors are often different. Sometimes it is "munmap_chunk(): invalid pointer," sometimes it is "double free or corruption (out)," sometimes it is "segmentation fault," and sometimes it is "free(): invalid size."
The errors occur in a subfunction whose output consists of some cell arrays of variable sizes. In most cases when errors occur, the code can run to the end of this subfunction.
Why does this happen? What should I do to resolve this problem?

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Answers (1)

Marie Anna NOVIELLO
Marie Anna NOVIELLO on 27 Mar 2025
The errors you're encountering, such as "munmap_chunk(): invalid pointer", "double free or corruption (out)", "segmentation fault", and "free(): invalid size", typically indicate issues related to memory management in C++ code, particularly with how memory is allocated, deallocated, or accessed.
Check dynamic memory allocation or look at the generated C++ code.

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