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If we have variable names, assign some value to them. let say assign 10 to both. Now free both variables. If the memory has been allocated through heap it will lose value 10 and now contain some junk value. But the variable whose memory is allocated through stack will still contain 10 even after free since it do not affect memory locations on stack.
I have verified this using gcc on 32 bit system
Code snippet:
- Kartik March 09, 2013