binutils-gdb/gdb/testsuite/gdb.fortran/vla.f90
Jan Kratochvil ba881f505b testsuite: Fix false Fortran regressions with recent gcc
gcc-4.9.2-6.fc21.x86_64 -> gcc-5.3.1-2.fc23.x86_64

-PASS: gdb.fortran/vla-ptype.exp: ptype pvla not initialized
+FAIL: gdb.fortran/vla-ptype.exp: ptype pvla not initialized
-PASS: gdb.fortran/vla-history.exp: print vla1 allocated
+FAIL: gdb.fortran/vla-history.exp: print vla1 allocated
-PASS: gdb.fortran/vla-history.exp: print $2
+FAIL: gdb.fortran/vla-history.exp: print $2
-PASS: gdb.fortran/vla-value.exp: print undefined pvla
+FAIL: gdb.fortran/vla-value.exp: print undefined pvla
-PASS: gdb.fortran/vla-value.exp: print non-associated &pvla
+FAIL: gdb.fortran/vla-value.exp: print non-associated &pvla
-PASS: gdb.fortran/vla-value.exp: print undefined pvla(1,3,8)
+FAIL: gdb.fortran/vla-value.exp: print undefined pvla(1,3,8)

These issues get fixed (or removed if no longer applicable) by attached patch.

It is based on Googled:
	http://www.cs.rpi.edu/~szymansk/OOF90/bugs.html#5
	When a pointer is declared its status is undefined, and cannot be
	safely queried with the associated intrinsic.
	-> nullify(VARNAME)
+
	https://software.intel.com/en-us/forums/intel-fortran-compiler-for-linux-and-mac-os-x/topic/268786
	ALLOCATE is not supposed to initialize the array.
	-> Remove checks like an initial print is: \\( *0, *0, *0...\\)

These regressions remain:
	-PASS: gdb.fortran/library-module.exp: print var_i in lib
	+FAIL: gdb.fortran/library-module.exp: print var_i in lib
	-PASS: gdb.fortran/library-module.exp: print var_i in main
	+FAIL: gdb.fortran/library-module.exp: print var_i in main
I believe it is more a GDB bug (in a code contributed by me), filed:
	gdb.fortran/library-module.exp false regression on GCC upgrade
	https://sourceware.org/bugzilla/show_bug.cgi?id=19635

gdb/testsuite/ChangeLog
2016-02-14  Jan Kratochvil  <jan.kratochvil@redhat.com>

	Fix compatibility with recent gfortran-5.3.1.
	* gdb.fortran/vla-history.exp (print vla1 allocated)
	(print vla2 allocated, print $2, print $3): Remove
	(print $4): Rename to ...
	(print $2): ... here.
	(print $9): Rename to ...
	(print $5): ... here.
	(print $10): Rename to ...
	(print $6): ... here.
	* gdb.fortran/vla.f90: Add pvla initialization.
2016-02-14 09:21:18 +01:00

58 lines
1.7 KiB
Fortran

! Copyright 2015-2016 Free Software Foundation, Inc.
!
! This program is free software; you can redistribute it and/or modify
! it under the terms of the GNU General Public License as published by
! the Free Software Foundation; either version 3 of the License, or
! (at your option) any later version.
!
! This program is distributed in the hope that it will be useful,
! but WITHOUT ANY WARRANTY; without even the implied warranty of
! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
! GNU General Public License for more details.
!
! You should have received a copy of the GNU General Public License
! along with this program. If not, see <http://www.gnu.org/licenses/>.
program vla
real, target, allocatable :: vla1 (:, :, :)
real, target, allocatable :: vla2 (:, :, :)
real, target, allocatable :: vla3 (:, :)
real, pointer :: pvla (:, :, :)
logical :: l
nullify(pvla)
allocate (vla1 (10,10,10)) ! vla1-init
l = allocated(vla1)
allocate (vla2 (1:7,42:50,13:35)) ! vla1-allocated
l = allocated(vla2)
vla1(:, :, :) = 1311 ! vla2-allocated
vla1(3, 6, 9) = 42
vla1(1, 3, 8) = 1001
vla1(6, 2, 7) = 13
vla2(:, :, :) = 1311 ! vla1-filled
vla2(5, 45, 20) = 42
pvla => vla1 ! vla2-filled
l = associated(pvla)
pvla => vla2 ! pvla-associated
l = associated(pvla)
pvla(5, 45, 20) = 1
pvla(7, 45, 14) = 2
pvla => null() ! pvla-re-associated
l = associated(pvla)
deallocate (vla1) ! pvla-deassociated
l = allocated(vla1)
deallocate (vla2) ! vla1-deallocated
l = allocated(vla2)
allocate (vla3 (2,2)) ! vla2-deallocated
vla3(:,:) = 13
end program vla