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From: "pault at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/104382] New: Finalization of parent components not
 compliant with standard
Date: Fri, 04 Feb 2022 12:49:30 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104382

            Bug ID: 104382
           Summary: Finalization of parent components not compliant with
                    standard
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pault at gcc dot gnu.org
  Target Milestone: ---

Created attachment 52349
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D52349&action=3Dedit
Testcase for the problems

With all branches that feature finalization, the attached testcase outputs:
 final_count after assignment =3D            0
 destructor4(complicated)   4.00000000       5.00000000=20=20=20=20
 destructor5 (simple2)          -1
 destructor5 (simple2)          -2
 destructor2(simple)           3           4
 final_count after deallocation =3D            4

Ifort, on the other hand, outputs:
 destructor4(complicated)   2.000000       2.000000=20=20=20=20
 destructor5 (simple2)           5
 destructor5 (simple2)           6
 destructor1(simple)           1
 destructor1(simple)           1
 final_count after assignment =3D            5
 destructor4(complicated)   4.000000       5.000000=20=20=20=20
 destructor5 (simple2)          -1
 destructor5 (simple2)          -2
 destructor1(simple)           3
 destructor1(simple)           4
 final_count after deallocation =3D           10

There are two problems:
(i) The finalization of 'var' prior to reallocation is not ocurring. This is
fixed by the patch that I posted to the list yesterday.

(ii) The parent component is not being treated as a component, as mandated =
by
F2018 7.5.6.2/1(3). Ifort is behaving correctly.

Paul=