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From: "info@ebner-markus.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/108180] New: [OpenMP] Passing a class member variable to
 firstprivate() erroneously calls its dtor
Date: Mon, 19 Dec 2022 17:41:15 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108180

            Bug ID: 108180
           Summary: [OpenMP] Passing a class member variable to
                    firstprivate() erroneously calls its dtor
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: info@ebner-markus.de
  Target Milestone: ---

Created attachment 54128
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D54128&action=3Dedit
Minimal example cpp

Following situation:
I have a class. This class has a member variable (itself of a complex type).
The class also has a member function in which an OpenMP loop (#pragma omp
parallel for) is used. This loop accesses the mentioned class member variab=
le
through the firstprivate() flag.
As far as I understood, this should copy the variable into every worker thr=
ead
by calling the copy constructor.
However, now upon leaving the class's member function, the dtor of the class
member variable is called.

Here is a code example: https://godbolt.org/z/oxb3Pq9he
The log shows, that the dtor of the mentioned class member variable is
erroneously called twice.=