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echo: c_echo
to: Tom Torfs
from: Bill Birrell
date: 1998-10-01 07:56:02
subject: Tutorial questions?

Hi Tom,

    [storage of const objects]

    You said to John Gardeniers:-

 > Probably because it isn't true :-)

    But it is true, Tom, under certain circumstances which John may well
have taken for granted. See 6.5.3 note 97 of the standard.

"97  The implementation may place a const object that is not volatile in a
read-only region of storage. Moreover, the implementation need not allocate
storage for such an object if its address is never used."

    So John is not wrong there. An identifier type-qualified as const *in
C* does NOT require storage space unless its address is used.

Best wishes,
Bill.

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