From 4db0aba8309a2c7e2c7ac95195621dff02e9796c Mon Sep 17 00:00:00 2001
From: Harald Anlauf <anlauf@gmx.de>
Date: Sun, 9 Oct 2022 20:43:32 +0200
Subject: [PATCH] Fortran: fix check of polymorphic elements in data transfers
[PR100971]
gcc/fortran/ChangeLog:
PR fortran/100971
* resolve.cc (resolve_transfer): Extend check for permissibility
of polymorphic elements in a data transfer to arrays.
gcc/testsuite/ChangeLog:
PR fortran/100971
* gfortran.dg/der_io_5.f90: New test.
---
gcc/fortran/resolve.cc | 5 +++++
gcc/testsuite/gfortran.dg/der_io_5.f90 | 17 +++++++++++++++++
2 files changed, 22 insertions(+)
create mode 100644 gcc/testsuite/gfortran.dg/der_io_5.f90
@@ -10017,6 +10017,7 @@ resolve_transfer (gfc_code *code)
if (exp == NULL || (exp->expr_type != EXPR_VARIABLE
&& exp->expr_type != EXPR_FUNCTION
+ && exp->expr_type != EXPR_ARRAY
&& exp->expr_type != EXPR_STRUCTURE))
return;
@@ -10030,6 +10031,7 @@ resolve_transfer (gfc_code *code)
const gfc_typespec *ts = exp->expr_type == EXPR_STRUCTURE
|| exp->expr_type == EXPR_FUNCTION
+ || exp->expr_type == EXPR_ARRAY
? &exp->ts : &exp->symtree->n.sym->ts;
/* Go to actual component transferred. */
@@ -10128,6 +10130,9 @@ resolve_transfer (gfc_code *code)
if (exp->expr_type == EXPR_STRUCTURE)
return;
+ if (exp->expr_type == EXPR_ARRAY)
+ return;
+
sym = exp->symtree->n.sym;
if (sym->as != NULL && sym->as->type == AS_ASSUMED_SIZE && exp->ref
new file mode 100644
@@ -0,0 +1,17 @@
+! { dg-do compile }
+! PR fortran/100971 - ICE: Bad IO basetype (7)
+! Contributed by G.Steinmetz
+
+program p
+ implicit none
+ type t
+ end type
+ class(t), allocatable :: a, b(:)
+ type(t) :: x, y(1)
+ integer :: i
+ allocate (a,b(1))
+ print *, [a] ! { dg-error "Data transfer element at .1. cannot be polymorphic" }
+ print *, [(b(i),i=1,1)] ! { dg-error "Data transfer element at .1. cannot be polymorphic" }
+ print *, [x]
+ print *, [(y(i),i=1,1)]
+end
--
2.35.3