ALLOCATE questions

Standard says -
"2) If arithmetic-expression-1 evaluates to 0 or a negative value, the data
item referenced by data-name-2 is set to
the predefined address NULL."

No exception condition set ?


What is supposed to happen if a second ALLOCATE is done
for the same item (Without an intervening FREE) ?
(Implicit FREE/ReALLOCATE ?)

Roger


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