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Fortran: fix check of polymorphic elements in data transfers [PR100971]

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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.
This commit is contained in:
Harald Anlauf 2022-10-09 20:43:32 +02:00
parent b4a4c6382b
commit 89f20c9ae4
2 changed files with 22 additions and 0 deletions
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5
gcc/fortran/resolve.cc
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@ -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

17
gcc/testsuite/gfortran.dg/der_io_5.f90 Normal file
View File

@ -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