Could this explain the miscompilation I was experiencing on macOS some years ago where I forgot a `return` statement, the compiler didn't give a single fuck and

Could this explain the miscompilation I was experiencing on macOS some years ago where I forgot a `return` statement, the compiler didn't give a single fuck and spit out an executable anyway, and I spent hours in a debugger wondering how the hell I found myself in random completely invalid instructions for no reason? Took hours, perhaps even days to track down. I did it by spamming single-step until it stopped being able to find the line that was currently executing.