topic Re: ifort cannot NULLIFY a pointer of the derived data type fun in Intel® Fortran Compiler

ifort cannot NULLIFY a pointer of the derived data type function

mckim — Mon, 22 Sep 2008 23:45:05 GMT

Compiling with ifort and executing the following code demonstrates ifort has a bug when a function returns a pointer for a derived data type.

PROGRAM BUG

TYPE T
INTEGER :: i
END TYPE T

TYPE( T ), POINTER :: get

get => Check()

CONTAINS

FUNCTION Check() RESULT ( n )

TYPE( T ), POINTER :: n

NULLIFY( n )

IF( ASSOCIATED( n ) ) print *, "ifort cannot NULLIFY a pointer of the derived data type function"

END FUNCTION

END PROGRAM

Re: ifort cannot NULLIFY a pointer of the derived data type fun

Steven_L_Intel1 — Tue, 23 Sep 2008 13:42:46 GMT

I can't reproduce this problem - which exact version of ifort are you using and what compile options?

Re: ifort cannot NULLIFY a pointer of the derived data type fun

mckim — Tue, 23 Sep 2008 22:16:28 GMT

It is Version 8.0, and compiled with

ifort -o run bug.f90

Thank you.

Re: ifort cannot NULLIFY a pointer of the derived data type fun

Steven_L_Intel1 — Wed, 24 Sep 2008 13:45:43 GMT

Version 8.0 is five years old. The current version is 10.1 and my test shows it works with your test case.