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# Tests for anonymous union support.
# Copyright 1998, 1999, 2003, 2004, 2007, 2008, 2009, 2010
# 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/>.
# Written by Satish Pai <pai@apollo.hp.com> 1997-08-19
# This file is part of the gdb testsuite
if $tracelevel then {
strace $tracelevel
}
#
# test running programs
#
if { [skip_cplus_tests] } { continue }
set testfile "anon-union"
set srcfile ${testfile}.cc
set binfile ${objdir}/${subdir}/${testfile}
if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug c++}] != "" } {
perror "Testcase compile failed" 0
continue
}
# Start with a fresh gdb
gdb_exit
gdb_start
gdb_reinitialize_dir $srcdir/$subdir
gdb_load ${binfile}
if ![runto_main] then {
perror "couldn't run to breakpoint"
continue
}
gdb_test_no_output "set width 0"
#send_gdb "ptype foo\n"
#gdb_expect {
# -re "\r\n$gdb_prompt $" {
# pass "ptype foo"
# }
# -re ".*$gdb_prompt $" { fail "ptype foo" }
# timeout { fail "(timeout) ptype foo" }
#}
#send_gdb "ptype bar\n"
#gdb_expect {
# -re "\r\n$gdb_prompt $" {
# pass "ptype foo"
# }
# -re ".*$gdb_prompt $" { fail "ptype foo" }
# timeout { fail "(timeout) ptype foo" }
#}
# NOTE: Add -- ptype foo.x, etc. when things are working
#Initialize foo
gdb_test "next" "40\[ \t\]*foo.paper = 33;" "next 1"
# Print out the big anon union.
gdb_test "print foo" \
"\\$\[0-9\]* = \{num1 = \{zero = 0, one = 0\}, \{pebble = 0, x = \{rock = 0, rock2 = 0\}, \{qux = 0, mux = 0\}, boulder = 0\}, \{paper = 0, cloth = 0\}, num2 = \{two = 0, three = 0\}\}" \
"print foo 1"
# Step over assignment to member
gdb_test "next" "41\[ \t\]*foo.pebble = 44;" "next 2"
# Now print out anon union again
gdb_test "print foo" \
"\\$\[0-9\]* = \{num1 = \{zero = 0, one = 0\}, \{pebble = 0, x = \{rock = 0, rock2 = 0\}, \{qux = 0, mux = 0\}, boulder = 0\}, \{paper = 33, cloth = 33\}, num2 = \{two = 0, three = 0\}\}" \
"print foo 2"
# Modify the member just set
gdb_test_no_output "set var foo.cloth = 35" "set var foo.cloth"
# Now print out anon union again to see if the right member was set
gdb_test "print foo" \
"\\$\[0-9\]* = \{num1 = \{zero = 0, one = 0\}, \{pebble = 0, x = \{rock = 0, rock2 = 0\}, \{qux = 0, mux = 0\}, boulder = 0\}, \{paper = 35, cloth = 35\}, num2 = \{two = 0, three = 0\}\}" \
"print foo 3"
# Step over next assignment to member
gdb_test "next" "42\[ \t\]*foo.mux = 55;" "next 3"
# Now print out anon union again
gdb_test "print foo" \
"\\$\[0-9\]* = \{num1 = \{zero = 0, one = 0\}, \{pebble = 44, x = \{rock = 44, rock2 = 0\}, \{qux = 44, mux = 44\}, boulder = 44\}, \{paper = 35, cloth = 35\}, num2 = \{two = 0, three = 0\}\}" \
"print foo 4"
# Modify the member just set
gdb_test_no_output "set var foo.pebble = 45" "set var foo.pebble"
# Now print out anon union again to see if the right member was set
gdb_test "print foo" \
"\\$\[0-9\]* = \{num1 = \{zero = 0, one = 0\}, \{pebble = 45, x = \{rock = 45, rock2 = 0\}, \{qux = 45, mux = 45\}, boulder = 45\}, \{paper = 35, cloth = 35\}, num2 = \{two = 0, three = 0\}\}" \
"print foo 5"
# Modify another member at a different level
gdb_test_no_output "set var foo.qux = 46" "set var foo.qux"
# Now print out anon union again to see if the right member was set
gdb_test "print foo" \
"\\$\[0-9\]* = \{num1 = \{zero = 0, one = 0\}, \{pebble = 46, x = \{rock = 46, rock2 = 0\}, \{qux = 46, mux = 46\}, boulder = 46\}, \{paper = 35, cloth = 35\}, num2 = \{two = 0, three = 0\}\}" \
"print foo 6"
# Modify the member at another level, but not the first one in the union
gdb_test_no_output "set var foo.mux = 47" "set var foo.mux"
# Now print out anon union again to see if things worked
gdb_test "print foo" \
"\\$\[0-9\]* = \{num1 = \{zero = 0, one = 0\}, \{pebble = 47, x = \{rock = 47, rock2 = 0\}, \{qux = 47, mux = 47\}, boulder = 47\}, \{paper = 35, cloth = 35\}, num2 = \{two = 0, three = 0\}\}" \
"print foo 7"
# Modify a member of a struct in an anon union
gdb_test_no_output "set var foo.x.rock = 48" "set var foo.x.rock"
# Now print out anon union again to see if things worked
gdb_test "print foo" \
"\\$\[0-9\]* = \{num1 = \{zero = 0, one = 0\}, \{pebble = 48, x = \{rock = 48, rock2 = 0\}, \{qux = 48, mux = 48\}, boulder = 48\}, \{paper = 35, cloth = 35\}, num2 = \{two = 0, three = 0\}\}" \
"print foo 8"
# Modify a member of a struct in an anon union, but something
# that doesn't alias to some other union member
gdb_test_no_output "set var foo.x.rock2 = 49" "set var foo.x.rock2"
# Now print out anon union again to see if things worked
gdb_test "print foo" \
"\\$\[0-9\]* = \{num1 = \{zero = 0, one = 0\}, \{pebble = 48, x = \{rock = 48, rock2 = 49\}, \{qux = 48, mux = 48\}, boulder = 48\}, \{paper = 35, cloth = 35\}, num2 = \{two = 0, three = 0\}\}" \
"print foo 9"
# Step over next four assignments
gdb_test "next 4" "53\[ \t\]*w = 45;" "next 4"
# Tests for anon unions that are not members of a class or struct
gdb_test "print w" "\\$\[0-9\]* = 0" "print w 1"
gdb_test "print z" "\\$\[0-9\]* = 0" "print z 1"
# Step over next assignment to w
gdb_test "next" "55\[ \t\]*int j = 0;" "next 5"
# See if the change in value is noticed
gdb_test "print w" "\\$\[0-9\]* = 45" "print w 2"
# See if z shows the same value
gdb_test "print z" "\\$\[0-9\]* = 45" "print z 2"
# Set the anon union member
gdb_test_no_output "set var z = 27" "set var z"
# See if the change in value is noticed
gdb_test "print w" "\\$\[0-9\]* = 27" "print w 3"
# See if z shows the same value
gdb_test "print z" "\\$\[0-9\]* = 27" "print z 3"