J3/01-308

Date:    6 August 2001
To:      J3
From:    WG5 Members
Subject: Interp JP-04 (Construction of derived-type values)

WG5 members in London considered Interp JP-04 and recommend as
follows. The HISTORY mentions the action recommended by WG5.

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NUMBER: JP-04
TITLE: Construction of derived-type values
KEYWORDS:
DEFECT TYPE:
STATUS: J3 consideration in progress

QUESTION:
JP-4)
  4.4.4 Construction of derived-type values
  Before NOTE 4.34:

  "Where a component in the derived type is a pointer, the
   corresponding constructor expression shall evaluate to an object
   that would be an allowable target for such a pointer in a pointer
   assignment statement (7.5.2)."

  Change `an object' to `a result value'.  A value of an expression
  can not be an object, by definition.

ANSWER:   An edit is required but the proposed edit is not quite correct,
because the expression might yield a null pointer.

EDIT: Replace [45:7-9] by

  "Where a component in the derived type is a pointer,
   the corresponding constructor expression shall be an allowable <target>
for
   such a pointer in a pointer assignment statement (7.5.2)."

SUBMITTED BY: Japan
HISTORY: 99-208             Submitted
         99-221             Classed as Fortran 95 Interpretation.
         WG5-N1411          Draft answer
         00-260      m154   Passed by J3 meeting
         00-329      m155   Failed J3 letter ballot
         WG5-N1456          Accept Steidel's comment