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From: "mscfd at gmx dot net" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/110623] New: Segfault if type-bound procedure function
 provided for an assumed rank class(*) argument
Date: Tue, 11 Jul 2023 06:51:57 +0000
X-Bugzilla-Reason: CC
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: fortran
X-Bugzilla-Version: 14.0
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X-Bugzilla-Severity: normal
X-Bugzilla-Who: mscfd at gmx dot net
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X-Bugzilla-Priority: P3
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110623

            Bug ID: 110623
           Summary: Segfault if type-bound procedure function provided for
                    an assumed rank class(*) argument
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: mscfd at gmx dot net
  Target Milestone: ---

Created attachment 55519
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D55519&action=3Dedit
testcase

The attached code aborts with a segfault (or some undefined behaviour) in t=
he
line "call p(y%get())". For "call p(x%get())" with x declared as type(t)
instead of class(t), everything seems fine.

This is a variation to bug 100961. I have checked with 13.1 and 14.0 (curre=
nt
master).

valgrind shows "conditional jump depends on uninitialised value" and "inval=
id
read" before it aborts.=