MATLAB coder works in R2019b version but crashes in R2022b when I run a particular code. Assertion Detected error

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MATLAB Log File

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Assertion detected at 2023-11-22 13:41:14 +0100

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Configuration:

Crash Decoding : Disabled - No sandbox or build area path

Crash Mode : continue (default)

Default Encoding : UTF-8

Deployed : false

Desktop Environment : GNOME-Classic:GNOME

GNU C Library : 2.17 stable

Graphics Driver : Uninitialized software

Graphics card 1 : 0x15ad ( 0x15ad ) 0x405 Version 2.15.0.0 (0-0-0)

Java Version : Java 1.8.0_202-b08 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode

MATLAB Architecture : glnxa64

MATLAB Entitlement ID : 1837592

MATLAB Root : /share/giseh_de0_prod/matlab/R2022b/RedHatEL-7/x86_64

MATLAB Version : 9.13.0.2126072 (R2022b) Update 3

OpenGL : software

Operating System : "Red Hat Enterprise Linux Server release 7.9 (Maipo)"

Process ID : 31839

Processor ID : x86 Family 23 Model 49 Stepping 0, AuthenticAMD

Session Key : 0e4f58d6-84ce-4108-a721-9800435d848d

Static TLS mitigation : Enabled: Full

Window System : The X.Org Foundation (12004000), display :100

Fault Count: 1

Assertion in mxArray* {anonymous}::MxCreateStringNCharsT_safe<SourceType>::operator()(const char*, const SourceType*, size_t) const [with SourceType = char; mxArray = mxArray_tag; size_t = long unsigned int] at array2.cpp line 500:

mxCreateString called with non-UTF-8 input: 290�/4kts

Current Thread: 'MCR 0 interpret' id 140393463928576

Register State (captured):

RAX = 0000000000000000 RBX = 00007fb0308003a8

RCX = 0000000000000000 RDX = 00007fb0307ea008

RSP = 00007fafe68b5370 RBP = 00007fafe68b5750

RSI = 00007fb0307d02a2 RDI = 00007fafe68b5380

R8 = 0000000000000000 R9 = 00007fb030b539a0

R10 = 0000000000000000 R11 = 0000000000000000

R12 = 00007fafe68b6050 R13 = 00007fb0307f0328

R14 = 00007fb0308003a8 R15 = 00007fafe68b5bb0

RIP = 00007fb03077e8cf EFL = 0000000000000000

CS = 0000 FS = 0000 GS = 0000

Answer 1

[Shreeya]

Hello

From MATLAB R2022a onwards, calling a shared library from MATLAB expects UTF-8 encoded strings. Returning a string with non-UTF-8 encoded string causes MATLAB to crash due the above mentioned assertion error.

For example, to use an external library with MATLAB R2022a or later, modifcation of the source code is required such that the DLL always returns valid UTF-8 encoded strings.

Also refer to the below MATLAB Answers link to understand various other scenarios which may cause MATLAB to crash due to the same underlying cause:

https://www.mathworks.com/matlabcentral/answers/2003947-why-does-matlab-crash-with-the-message-mxcreatestring-called-with-non-utf-8-input-in-r2022a-and-ne