MinGW 64 no output

Hello and thank you for contributing this code, which seems to be the most promising for bug reporting among all the ones I have searched for. In Windows 64-bit and MinGW64 (Obviously), I am not able to retrieve the function names using addr2line.exe.

I always get this kind of result:

```
[0] 0x00007ff6b8d385d9 ?? ??:0
[1] 0x00007ff6b8d38301 ?? ??:0
[2] 0x00007ff6b8d382ca ?? ??:0
[3] 0x00007ff6b8d384d5 ?? ??:0
[4] 0x00007ff6b8d34073 ?? ??:0
[5] 0x00007ff6b8d35692 ?? ??:0
[6] 0x00007ff6b8d31395 ?? ??:0
[7] 0x00007ff6b8d314c6 ?? ??:0
[8] 0x00007ffaa0bb257d ?? ??:0
[9] 0x00007ffaa226aa58 ?? ??:0
```

I am using the cygwin64 version, I have tried the version distributed on QT with MinGW and in no case does addr2line.exe return a value to me.
Question: Are memory values like 0x00007ffaa226aa58 (very high) correct?
Another question, why did you import it to work only in Release Mode and not in Debug mode?
I've been trying everything for 4 days but I can't see the light at the end of the tunnel.

Any help is absolutely welcome.

The issue names no repository files or tests. Start by reproducing the missing symbols with addr2line.exe under MinGW64 and compare the Release and Debug cases; done means function names and source locations are returned reliably for the reported stack addresses.

Written by the indexing model from the issue text.