old-cross-binutils/gdb/testsuite/gdb.fortran/vla-history.exp
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These issues get fixed (or removed if no longer applicable) by attached patch.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

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# 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/>.
standard_testfile "vla.f90"
if { [prepare_for_testing ${testfile}.exp ${testfile} ${srcfile} \
{debug f90 quiet}] } {
return -1
}
if ![runto_main] {
untested "could not run to main"
return -1
}
# Set some breakpoints and print complete vla.
gdb_breakpoint [gdb_get_line_number "vla1-init"]
gdb_continue_to_breakpoint "vla1-init"
gdb_test "print vla1" " = <not allocated>" "print non-allocated vla1"
gdb_breakpoint [gdb_get_line_number "vla2-allocated"]
gdb_continue_to_breakpoint "vla2-allocated"
gdb_breakpoint [gdb_get_line_number "vla1-filled"]
gdb_continue_to_breakpoint "vla1-filled"
gdb_test "print vla1" \
" = \\( *\\( *\\( *1311, *1311, *1311,\[()1311, .\]*\\)" \
"print vla1 filled"
# Try to access history values for full vla prints.
gdb_test "print \$1" " = <not allocated>" "print \$1"
gdb_test "print \$2" \
" = \\( *\\( *\\( *1311, *1311, *1311,\[()1311, .\]*\\)" "print \$2"
gdb_breakpoint [gdb_get_line_number "vla2-filled"]
gdb_continue_to_breakpoint "vla2-filled"
gdb_test "print vla2(1,43,20)" " = 1311" "print vla2(1,43,20)"
gdb_test "print vla1(1,3,8)" " = 1001" "print vla2(1,3,8)"
# Try to access history values for vla values.
gdb_test "print \$5" " = 1311" "print \$5"
gdb_test "print \$6" " = 1001" "print \$6"