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From: "anlauf at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/99169] [9/10/11 Regression] Segfault when passing
 allocatable scalar into intent(out) dummy argument
Date: Fri, 19 Feb 2021 20:13:21 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99169

--- Comment #3 from anlauf at gcc dot gnu.org ---
A conservative solution simply disables the clobber:

diff --git a/gcc/fortran/trans-expr.c b/gcc/fortran/trans-expr.c
index 103cb31c664..ce7bfaa89e8 100644
--- a/gcc/fortran/trans-expr.c
+++ b/gcc/fortran/trans-expr.c
@@ -6082,6 +6084,7 @@ gfc_conv_procedure_call (gfc_se * se, gfc_symbol * sy=
m,
                        /* FIXME - PR 87395 and PR 41453  */
                        && e->symtree->n.sym->attr.save =3D=3D SAVE_NONE
                        && !e->symtree->n.sym->attr.associate_var
+                       && !e->symtree->n.sym->attr.allocatable
                        && e->ts.type !=3D BT_CHARACTER && e->ts.type !=3D
BT_DERIVED
                        && e->ts.type !=3D BT_CLASS && !sym->attr.elemental;

This should result only in a missed optimization.
Is there a way to get sth. like:

  *i =3D {CLOBBER};

so that we do not clobber the pointer but the pointer to?=