1Bit on Nostr: any expert C programmers out here? I'm super stumped into this really strange bug, ...

any expert C programmers out here? I'm super stumped into this really strange bug, happening in Symantec C++ 6.0 (but I'm using std C here). details in this thread:
https://68kmla.org/bb/index.php?threads/something-escaping-my-grasp-about-memory-allocation-and-the-debugger.47875/