From b8f124adcf258eccd29ffcec5cc3f8915cc2ca47 Mon Sep 17 00:00:00 2001
From: Harald Anlauf <anlauf@gmx.de>
Date: Tue, 1 Feb 2022 23:33:24 +0100
Subject: [PATCH] Fortran: reject simplifying TRANSFER for MOLD with storage
size 0
gcc/fortran/ChangeLog:
PR fortran/104311
* check.cc (gfc_calculate_transfer_sizes): Checks for case when
storage size of SOURCE is greater than zero while the storage size
of MOLD is zero and MOLD is an array shall not depend on SIZE.
gcc/testsuite/ChangeLog:
PR fortran/104311
* gfortran.dg/transfer_simplify_15.f90: New test.
---
gcc/fortran/check.cc | 2 +-
gcc/testsuite/gfortran.dg/transfer_simplify_15.f90 | 11 +++++++++++
2 files changed, 12 insertions(+), 1 deletion(-)
create mode 100644 gcc/testsuite/gfortran.dg/transfer_simplify_15.f90
@@ -6150,7 +6150,7 @@ gfc_calculate_transfer_sizes (gfc_expr *source, gfc_expr *mold, gfc_expr *size,
* representation is not shorter than that of SOURCE.
* If SIZE is present, the result is an array of rank one and size SIZE.
*/
- if (result_elt_size == 0 && *source_size > 0 && !size
+ if (result_elt_size == 0 && *source_size > 0
&& (mold->expr_type == EXPR_ARRAY || mold->rank))
{
gfc_error ("%<MOLD%> argument of %<TRANSFER%> intrinsic at %L is an "
new file mode 100644
@@ -0,0 +1,11 @@
+! { dg-do compile }
+! PR fortran/104311 - ICE out of memory
+! Contributed by G.Steinmetz
+
+program p
+ type t
+ end type
+ type(t) :: x(2)
+ print *, transfer(1,x,2) ! { dg-error "shall not have storage size 0" }
+ print *, transfer(1,x,huge(1)) ! { dg-error "shall not have storage size 0" }
+end
--
2.34.1