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re PR fortran/35339 (Improve translation of implied do loop in transfer)

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2018-02-19  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/35339
	* frontend-passes.c (traverse_io_block): Remove workaround for
	PR 80945.

2018-02-19  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/35339
	* gfortran.dg/implied_do_io_4.f90: New test.

From-SVN: r257814
This commit is contained in:
Thomas Koenig 2018-02-19 18:21:45 +00:00
parent 87e8aa3bd9
commit d48fc34a45
4 changed files with 33 additions and 7 deletions
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6
gcc/fortran/ChangeLog
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@ -1,3 +1,9 @@
2018-02-19 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/35339
* frontend-passes.c (traverse_io_block): Remove workaround for
PR 80945.
2018-02-19 Andre Vehreschild <vehre@gcc.gnu.org>
* gfortran.texi: Document additional src/dst_type. Fix some typos.

7
gcc/fortran/frontend-passes.c
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@ -1162,14 +1162,7 @@ traverse_io_block (gfc_code *code, bool *has_reached, gfc_code *prev)
gcc_assert (curr->op == EXEC_TRANSFER);
/* FIXME: Workaround for PR 80945 - array slices with deferred character
lenghts do not work. Remove this section when the PR is fixed. */
e = curr->expr1;
if (e->expr_type == EXPR_VARIABLE && e->ts.type == BT_CHARACTER
&& e->ts.deferred)
return false;
/* End of section to be removed. */
ref = e->ref;
if (!ref || ref->type != REF_ARRAY || ref->u.ar.codimen != 0 || ref->next)
return false;

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2018-02-19 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/35339
* gfortran.dg/implied_do_io_4.f90: New test.
2018-02-19 Andre Vehreschild <vehre@gcc.gnu.org>
* gfortran.dg/coarray_alloc_comp_6.f08: New test.

22
gcc/testsuite/gfortran.dg/implied_do_io_4.f90 Normal file
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@ -0,0 +1,22 @@
! { dg-do run }
! { dg-additional-options "-ffrontend-optimize -fdump-tree-original" }
! PR fortran/35339 - make sure that I/O of an implied DO loop
! of allocatable character arrays a) works and b) is converted
! to a transfer_array
program main
implicit none
integer:: i
integer, parameter:: N = 10
character(len=:), dimension(:),allocatable:: ca
allocate(character(len=N):: ca(3))
open(unit=10,status="scratch")
ca(1) = "foo"
ca(2) = "bar"
ca(3) = "xyzzy"
write (10, '(3A10)') (ca(i),i=1,3)
rewind (10)
ca(:) = ''
read (10, '(3A10)') (ca(i),i=1,3)
if (ca(1) /= 'foo' .or. ca(2) /= 'bar' .or. ca(3) /= 'xyzzy') call abort
end program
! { dg-final { scan-tree-dump-times "_gfortran_transfer_array" 2 "original" } }