> Could you help me understand why this might be happening?
Presumably because you never used the global variable, so the compiler just optimised it out.
> Could you help me understand why this might be happening?
Presumably because you never used the global variable, so the compiler just optimised it out.
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.