Around 26 years ago, I was working on some C code that was ported from assembler. It was too long ago to remember the actual bug, but I was stumped how a certai

Around 26 years ago, I was working on some C code that was ported from assembler. It was too long ago to remember the actual bug, but I was stumped how a certain variable "C" was getting set. I wasn't set explicitly anywhere in the code. It turns out that is was declared like this: int A, B, C; and it was being set something like this: int* pA = &A; // pointer to contents of "A" pA[2] = 3; // WTF? A,B, and C where assumed to be contiguous in memory and the code was treating "C" like the 3rd item in an array starting at "A".