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ISRO2014-51

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Which of the following is NOT represented in a subroutine's activation record frame for a stack-based programming language?

  1. Values of local variables
  2. Return address
  3. Heap area
  4. Information needed to access non local variables
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3 Answers

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Answer is Heap Area since even if u dynamically allocate a memory region inside a function still that memory area won't be created inside the stack frame of that segment , it would be created in the heap region so even if u exit from the function without freeing the dynamically created node , it would be still persisting in the heap memory region .
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Answer (C)

Heap is a common area for the entire program and is shared across all subroutines / threads of a program.

Each invocation of a subroutine has a record associated with it at runtime, holding some or all of the following:

  • Arguments (parameters)
  • A link to the caller's stack frame (the dynamic link)
  • In a language with nested subroutines, a mechanism for accessing non-locals (Option - D), which could be one of:
    • A static link, or
    • A pointer to the most recent frame at this level, or
    • The whole display
  • The return address (Option - B)
  • Local variables  (Option - C)
  • Copies of callee-save registers, if needed
  • Temporaries
  • Spilled registers

Reference: http://cs.lmu.edu/~ray/notes/subroutineimplementation/

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