Debugging s-functions / MEX functions with GDB and VS-Code

Hello,

I'm trying ot debug mex functions. I have followed this tutorial strictly: https://blogs.mathworks.com/developer/2018/06/19/mex-debugging-vscode

However, I cannot seem to get all symbol data. So far I can debug and stop at breakpoints. But I cannot get information on local variables, or which line the program currently stopped at. This is the GDB output when reaching a breakpoint:

Program received signal SIGTRAP, Trace/breakpoint trap.

[Switching to Thread 5304.0x3a78]

0x00000001 in ?? ()

=thread-selected,id="1"

As can be seen, no information on code is presented, thus symbols are missing.

Local variables also cannot be printed using gdb commands.

I'm using MATLAB Version: 9.7.0.1586710 (R2019b) Update 8, and I tried using

MinGW64 4.9.1 (GDB 7.8.1)

MinGW64 4.9.1 (GDB 7.7.1)

MinGW64 6.3.0 (GDB 7.11.1)

MinGW64 8.1.0 (GDB 8.1)

without success.

Why are breakpoints loaded but not information about local variables? No stack information at all.

Any help is greatly appreciated!