testsuite/gdb.cp/ambiguous.exp

# Copyright 1998-2020 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/>.

# This file is part of the gdb testsuite

# tests relating to ambiguous class members
# Written by Satish Pai <pai@apollo.hp.com> 1997-07-28

# This file is part of the gdb testsuite

#
# test running programs
#


if { [skip_cplus_tests] } { continue }

standard_testfile .cc

if [get_compiler_info "c++"] {
    unsupported "couldn't find a valid c++ compiler"
    return -1
}

set additional_flags ""
if {[test_compiler_info {gcc-[0-9]-*}]} {
    # GCCs prior to 10.1 do not support -Wno-inaccessible-base.
    set additional_flags "additional_flags=-w"
} elseif {[test_compiler_info gcc*] || [test_compiler_info clang*]} {
    set additional_flags "additional_flags=-Wno-inaccessible-base"
}

if {[prepare_for_testing "failed to prepare" $testfile $srcfile \
     [list debug c++ $additional_flags]]} {
    return -1
}

#
# set it up at a breakpoint so we can play with the variable values
#
if ![runto_main] then {
    perror "couldn't run to breakpoint"
    continue
}

send_gdb "break marker1\n" ; gdb_expect -re ".*$gdb_prompt $"
    send_gdb "cont\n"
    gdb_expect {
        -re "Break.* marker1 \\(\\) at .*:$decimal.*$gdb_prompt $" {
            send_gdb "up\n"
            gdb_expect {
                -re ".*$gdb_prompt $" { pass "up from marker1" }
                timeout { fail "up from marker1" }
            }
        }
        -re "$gdb_prompt $" { fail "continue to marker1"  }
        timeout { fail "(timeout) continue to marker1"  }
    }

# print out various class objects' members.  The values aren't
# important, just check that the warning is emitted at the
# right times.

# X is derived from A1 and A2; both A1 and A2 have a member 'x'
setup_kfail gdb/26602 *-*-*
send_gdb "print x.x\n"
gdb_expect {
   -re "warning: x ambiguous; using X::A2::x. Use a cast to disambiguate.\r\n\\$\[0-9\]* = \[-\]*\[0-9\]*\r\n$gdb_prompt $" {
       pass "print x.x"
   }
   -re "warning: x ambiguous; using X::A1::x. Use a cast to disambiguate.\r\n\\$\[0-9\]* = \[-\]*\[0-9\]*\r\n$gdb_prompt $" {
       pass "print x.x"
   }
   -re ".*$gdb_prompt $" { fail "print x.x" }
   timeout { fail "(timeout) print x.x" }
}


# N is derived from A1 and A2, but not immediately -- two steps
# up in the hierarchy. Both A1 and A2 have a member 'x'.
setup_kfail gdb/26602 *-*-*
send_gdb "print n.x\n"
gdb_expect {
   -re "warning: x ambiguous; using N::M::A2::x. Use a cast to disambiguate.\r\n\\$\[0-9\]* = \[-\]*\[0-9\]*\r\n$gdb_prompt $" {
       pass "print n.x"
   }
   -re "warning: x ambiguous; using N::L::A1::x. Use a cast to disambiguate.\r\n\\$\[0-9\]* = \[-\]*\[0-9\]*\r\n$gdb_prompt $" {
       pass "print n.x"
   }
   -re ".*$gdb_prompt $" { fail "print n.x" }
   timeout { fail "(timeout) print n.x" }
}

# J is derived from A1 twice.  A1 has a member x.
setup_kfail gdb/26602 *-*-*
send_gdb "print j.x\n"
gdb_expect {
   -re "warning: x ambiguous; using J::L::A1::x. Use a cast to disambiguate.\r\n\\$\[0-9\]* = \[-\]*\[0-9\]*\r\n$gdb_prompt $" {
       pass "print j.x"
   }
   -re "warning: x ambiguous; using J::K::A1::x. Use a cast to disambiguate.\r\n\\$\[0-9\]* = \[-\]*\[0-9\]*\r\n$gdb_prompt $" {
       pass "print j.x"
   }
   -re ".*$gdb_prompt $" { fail "print j.x" }
   timeout { fail "(timeout) print j.x" }
}

# JV is derived from A1 but A1 is a virtual base. Should not
# report an ambiguity in this case.
send_gdb "print jv.x\n"
gdb_expect {
   -re "warning: x ambiguous.*Use a cast to disambiguate.\r\n\\$\[0-9\]* = \[-\]*\[0-9\]*\r\n$gdb_prompt $" {
       fail "print jv.x (ambiguity reported)"
   }
   -re "\\$\[0-9\]* = \[-\]*\[0-9\]*\r\n$gdb_prompt $" { pass "print jv.x" }
   -re ".*$gdb_prompt $" { fail "print jv.x (??)" }
   timeout { fail "(timeout) print jv.x" }
}

# JVA1 is derived from A1; A1 occurs as a virtual base in two
# ancestors, and as a non-virtual immediate base. Ambiguity must
# be reported.
setup_kfail gdb/26602 *-*-*
send_gdb "print jva1.x\n"
gdb_expect {
   -re "warning: x ambiguous; using JVA1::A1::x. Use a cast to disambiguate.\r\n\\$\[0-9\]* = \[-\]*\[0-9\]*\r\n$gdb_prompt $" {
       pass "print jva1.x"
   }
   -re "warning: x ambiguous; using JVA1::KV::A1::x. Use a cast to disambiguate.\r\n\\$\[0-9\]* = \[-\]*\[0-9\]*\r\n$gdb_prompt $" {
       pass "print jva1.x"
   }
   -re ".*$gdb_prompt $" { fail "print jva1.x" }
   timeout { fail "(timeout) print jva1.x" }
}

# JVA2 is derived from A1 & A2; A1 occurs as a virtual base in two
# ancestors, and A2 is a non-virtual immediate base. Ambiguity must
# be reported as A1 and A2 both have a member 'x'.
setup_kfail gdb/26602 *-*-*
send_gdb "print jva2.x\n"
gdb_expect {
   -re "warning: x ambiguous; using JVA2::A2::x. Use a cast to disambiguate.\r\n\\$\[0-9\]* = \[-\]*\[0-9\]*\r\n$gdb_prompt $" {
       pass "print jva2.x"
   }
   -re "warning: x ambiguous; using JVA2::KV::A1::x. Use a cast to disambiguate.\r\n\\$\[0-9\]* = \[-\]*\[0-9\]*\r\n$gdb_prompt $" {
       pass "print jva2.x"
   }
   -re ".*$gdb_prompt $" { fail "print jva2.x" }
   timeout { fail "(timeout) print jva2.x" }
}

# JVA1V is derived from A1; A1 occurs as a virtual base in two
# ancestors, and also as a virtual immediate base. Ambiguity must
# not be reported.
send_gdb "print jva1v.x\n"
gdb_expect {
   -re "warning: x ambiguous.*Use a cast to disambiguate.\r\n\\$\[0-9\]* = \[-\]*\[0-9\]*\r\n$gdb_prompt $" {
       fail "print jva1v.x (ambiguity reported)"
   }
   -re "\\$\[0-9\]* = \[-\]*\[0-9\]*\r\n$gdb_prompt $" { pass "print jva1v.x" }
   -re ".*$gdb_prompt $" { fail "print jva1v.x (??)" }
   timeout { fail "(timeout) print jva1v.x" }
}

# Now check for ambiguous bases.

# J is derived from A1 twice; report ambiguity if a J is
# cast to an A1.
setup_kfail gdb/26602 *-*-*
send_gdb "print (A1)j\n"
gdb_expect {
   -re "warning: A1 ambiguous; using J::L::A1. Use a cast to disambiguate.\r\n\\$\[0-9\]* = \{x = \[-\]*\[0-9\]*, y = \[-\]*\[0-9\]*\}\r\n$gdb_prompt $" {
       pass "print (A1)j"
   }
   -re "warning: A1 ambiguous; using J::K::A1. Use a cast to disambiguate.\r\n\\$\[0-9\]* = \{x = \[-\]*\[0-9\]*, y = \[-\]*\[0-9\]*\}\r\n$gdb_prompt $" {
       pass "print (A1)j"
   }
   -re ".*$gdb_prompt $" { fail "print (A1)j" }
   timeout { fail "(timeout) print (A1)j" }
}

# JV is derived from A1 twice, but A1 is a virtual base; should
# not report ambiguity when a JV is cast to an A1.
send_gdb "print (A1)jv\n"
gdb_expect {
   -re "warning: A1 ambiguous.*Use a cast to disambiguate.\r\n\\$\[0-9\]* = \{x = \[-\]*\[0-9\]*, y = \[-\]*\[0-9\]*\}\r\n$gdb_prompt $" {
       fail "print (A1)jv (ambiguity reported)"
   }
   -re "\\$\[0-9\]* = \{x = \[-\]*\[0-9\]*, y = \[-\]*\[0-9\]*\}\r\n$gdb_prompt $" { pass "print (A1)jv" }
   -re ".*$gdb_prompt $" { fail "print (A1)jv (??)" }
   timeout { fail "(timeout) print (A1)jv" }
}

# JVA1 is derived from A1; A1 is a virtual base and also a
# non-virtual base.  Must report ambiguity if a JVA1 is cast to an A1.
setup_kfail gdb/26602 *-*-*
send_gdb "print (A1)jva1\n"
gdb_expect {
   -re "warning: A1 ambiguous; using JVA1::A1. Use a cast to disambiguate.\r\n\\$\[0-9\]* = \{x = \[-\]*\[0-9\]*, y = \[-\]*\[0-9\]*\}\r\n$gdb_prompt $" {
       pass "print (A1)jva1"
   }
   -re "warning: A1 ambiguous; using JVA1::KV::A1. Use a cast to disambiguate.\r\n\\$\[0-9\]* = \{x = \[-\]*\[0-9\]*, y = \[-\]*\[0-9\]*\}\r\n$gdb_prompt $" {
       pass "print (A1)jva1"
   }
   -re ".*$gdb_prompt $" { fail "print (A1)jva1" }
   timeout { fail "(timeout) print (A1)jva1" }
}

# JVA1V is derived from A1; A1 is a virtual base indirectly
# and also directly; must not report ambiguity when a JVA1V is cast to an A1.
send_gdb "print (A1)jva1v\n"
gdb_expect {
   -re "warning: A1 ambiguous.*Use a cast to disambiguate.\r\n\\$\[0-9\]* = \{x = \[-\]*\[0-9\]*, y = \[-\]*\[0-9\]*\}\r\n$gdb_prompt $" {
       fail "print (A1)jva1v (ambiguity reported)"
   }
   -re "\\$\[0-9\]* = \{x = \[-\]*\[0-9\]*, y = \[-\]*\[0-9\]*\}\r\n$gdb_prompt $" { pass "print (A1)jva1v"
   }
   -re ".*$gdb_prompt $" { fail "print (A1)jva1v (??)" }
   timeout { fail "(timeout) print (A1)jva1v" }
}