From 986bf9cc5abc51598609b16edc9242a87244571b Mon Sep 17 00:00:00 2001
From: Harald Anlauf <anlauf@gmx.de>
Date: Wed, 26 Oct 2022 21:00:44 +0200
Subject: [PATCH] Fortran: BOZ literal constants are not compatible to any type
[PR103413]
gcc/fortran/ChangeLog:
PR fortran/103413
* symbol.cc (gfc_type_compatible): A boz-literal-constant has no type
and thus is not considered compatible to any type.
gcc/testsuite/ChangeLog:
PR fortran/103413
* gfortran.dg/illegal_boz_arg_4.f90: New test.
---
gcc/fortran/symbol.cc | 4 ++++
gcc/testsuite/gfortran.dg/illegal_boz_arg_4.f90 | 13 +++++++++++++
2 files changed, 17 insertions(+)
create mode 100644 gcc/testsuite/gfortran.dg/illegal_boz_arg_4.f90
@@ -5139,6 +5139,10 @@ gfc_type_compatible (gfc_typespec *ts1, gfc_typespec *ts2)
bool is_union1 = (ts1->type == BT_UNION);
bool is_union2 = (ts2->type == BT_UNION);
+ /* A boz-literal-constant has no type. */
+ if (ts1->type == BT_BOZ || ts2->type == BT_BOZ)
+ return false;
+
if (is_class1
&& ts1->u.derived->components
&& ((ts1->u.derived->attr.is_class
new file mode 100644
@@ -0,0 +1,13 @@
+! { dg-do compile }
+! { dg-options "-std=f2018" }
+! PR fortran/103413
+! Contributed by G.Steinmetz
+
+program p
+ type t
+ class(*), allocatable :: a
+ end type
+ type(t) :: x
+ allocate (x%a, source=z'1') ! { dg-error "type incompatible" }
+ allocate (x%a, mold=z'1') ! { dg-error "type incompatible" }
+end
--
2.35.3