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I’m trying to free up the memory I’ve allocated with malloc, but the free command doesn’t seem to do its job properly according to Eclipse’s debugger. How’s this possible?
Below is a screenshot of my debugger after it supposedly freed up seCurrent->student->year, which is clearly not the case. year was allocated using malloc.
free() does not normally change any values in your program – it just makes adjustments to the C runtime heap. This means that the values in the memory that was just freed are retained. However, attempts to access them from your code lead to undefined behaviour.