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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/106856] [12/13 Regression][OOP] CLASS attribute
 handling / ICE in gfc_conv_expr_present, at fortran/trans-expr.cc:1977 since
 r12-4346-geb92cd57a1ebe7cd
Date: Sun, 05 Mar 2023 20:13:37 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106856

--- Comment #8 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Harald Anlauf <anlauf@gcc.gnu.org>:

https://gcc.gnu.org/g:6aa1f40a3263741d964ef4716e85a0df5cec83b6

commit r13-6497-g6aa1f40a3263741d964ef4716e85a0df5cec83b6
Author: Harald Anlauf <anlauf@gmx.de>
Date:   Thu Mar 2 22:37:14 2023 +0100

    Fortran: fix CLASS attribute handling [PR106856]

    gcc/fortran/ChangeLog:

            PR fortran/106856
            * class.cc (gfc_build_class_symbol): Handle update of attribute=
s of
            existing class container.
            (gfc_find_derived_vtab): Fix several memory leaks.
            (find_intrinsic_vtab): Ditto.
            * decl.cc (attr_decl1): Manage update of symbol attributes from
            CLASS attributes.
            * primary.cc (gfc_variable_attr): OPTIONAL shall not be taken or
            updated from the class container.
            * symbol.cc (free_old_symbol): Adjust management of symbol vers=
ions
            to not prematurely free array specs while working on the declat=
ion
            of CLASS variables.

    gcc/testsuite/ChangeLog:

            PR fortran/106856
            * gfortran.dg/interface_41.f90: Remove dg-pattern from valid
testcase.
            * gfortran.dg/class_74.f90: New test.
            * gfortran.dg/class_75.f90: New test.

    Co-authored-by: Tobias Burnus  <tobias@codesourcery.com>=