Reverse Engineering for Beginners

CHAPTER 10. POINTERS CHAPTER 10. POINTERS

These variables are zeroed, because non-initialized data (fromBSS) is cleared before the execution begins: [ISO07, 6.7.8p10].
They reside in the data segment, we can verify this by pressing Alt-M and reviewing the memory map:

Figure 10.2:OllyDbg: memory map