gdb/testsuite/gdb.ada/call_pn.exp

# Copyright 2010-2021 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/>.

load_lib "ada.exp"

if { [skip_ada_tests] } { return -1 }

standard_ada_testfile foo

if {[gdb_compile_ada "${srcfile}" "${binfile}" executable [list debug ]] != "" } {
  return -1
}

clean_restart ${testfile}

set bp_location [gdb_get_line_number "STOP" ${testdir}/foo.adb]
if ![runto "foo.adb:$bp_location" ] then {
  perror "Couldn't run ${testfile}"
  return
}

# The xfail mentioned below triggers for the "after" print, but may not
# trigger for the "before" print, though it will for -readnow.  This is
# related to PR25764 - "LOC_UNRESOLVED symbol missing from partial symtab".
# Stabilize test results by ensuring that the xfail triggers for the "before"
# print.
gdb_test_no_output "maint expand-symtabs"

# The xfail is for PR gcc/94469, which occurs with target board
# unix/-flto/-O0/-flto-partition=none/-ffat-lto-objects and gcc-8 and later.
# Note: We don't check for the filename in xfail_re because it might be
# wrong, filed as gdb PR25771.
set xfail_re \
    [multi_line \
	 "Multiple matches for last_node_id" \
	 "\\\[0\\\] cancel" \
	 "\\\[1\\\] pck\.last_node_id at .*.adb:17" \
	 "\\\[2\\\] pck\.last_node_id at .*.adb:17" \
	 "> $"]

# Make sure that last_node_id is set to zero...
gdb_test_multiple "print last_node_id" "print last_node_id before calling pn" {
    -re $xfail_re {
	xfail $gdb_test_name
	# One of the choices will print the correct value, the other one
	# <optimized out>.  Since we don't known which one to choose to get
	# the correct value, cancel.
	gdb_test_multiple "0" "cancel after xfail 1" {
	    -re -wrap "cancelled" {
	    }
	}
    }
    -re -wrap "= 0" {
	pass $gdb_test_name
    }
}

# Now, call procedure Pn, which should set Last_Node_Id to the value
# of the parameter used in the function call.  Verify that we can print
# the returned value correctly, while we're at it.
gdb_test "print pn(4321)" "= 4321"

# Make sure that last_node_id now has the correct value...
gdb_test_multiple "print last_node_id" "print last_node_id after calling pn" {
    -re $xfail_re {
	xfail $gdb_test_name
	# Cancel
	gdb_test_multiple "0" "cancel after xfail 2" {
	    -re -wrap "cancelled" {
	    }
	}
    }
    -re -wrap "= 4321" {
	pass $gdb_test_name
    }
}