First panel: Code compiles perfectly with no errors or warnings. Pure bliss! A mythical unicorn moment!
Second panel: "Let me just recompile without changing anything to make sure it wasn't a glitch in the Matrix..."
Third panel: Suddenly 8,191 errors and 16,383 warnings appear. Classic.
Fourth panel: Programmer's soul leaves body.
The compiler is basically gaslighting you. "It worked? That must be a mistake, let me fix that for you." Schrödinger's code - simultaneously working and catastrophically broken until you dare to observe it twice.