gdb/testsuite/gdb.cp/virtbase.exp

   1 # Copyright 2010-2012 Free Software Foundation, Inc.
   2
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 # This file is part of the gdb testsuite.
  17
  18 if { [skip_cplus_tests] } { continue }
  19
  20 set testfile "virtbase"
  21 set srcfile ${testfile}.cc
  22 set binfile ${objdir}/${subdir}/${testfile}
  23
  24 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug c++}] != "" } {
  25      untested virtbase.exp
  26      return -1
  27 }
  28
  29 gdb_exit
  30 gdb_start
  31 gdb_reinitialize_dir $srcdir/$subdir
  32 gdb_load ${binfile}
  33
  34 if {![runto_main]} then {
  35     perror "couldn't run to breakpoint"
  36     continue
  37 }
  38
  39 gdb_breakpoint [gdb_get_line_number "breakpoint 1"]
  40 gdb_continue_to_breakpoint "first breakpoint"
  41
  42 # In PR 11226, we failed to print x correctly in the "print *this"
  43 # case.
  44 gdb_test "print *this" " = {<mc::Base> = {x = 2}, _vptr.Middle = $hex, y = 3}"
  45 gdb_test "print x" " = 2" "print x in get_y"
  46
  47 gdb_breakpoint [gdb_get_line_number "breakpoint 2"]
  48 gdb_continue_to_breakpoint "second breakpoint"
  49
  50 # In PR 11226, we could not find x here.
  51 gdb_test "print x" " = 2" "print x in get_z"
  52
  53 gdb_breakpoint [gdb_get_line_number "breakpoint 3"]
  54 gdb_continue_to_breakpoint "third breakpoint"
  55
  56 # In PR 9629, we failed to print v correctly here.
  57 gdb_test "print *(D *) e" " = {<C> = {v = 11}, _vptr.D = $hex}"
  58
  59 # A regression test reported to Red Hat bugzilla, see:
  60 # https://bugzilla.redhat.com/show_bug.cgi?id=560741
  61 gdb_test_no_output "set print object on"
  62 gdb_test "print/x b->mA" " = 0xaaaaaaaa"
  63
  64 # A regression test reported to Red Hat bugzilla, see:
  65 # https://bugzilla.redhat.com/show_bug.cgi?id=606660
  66 # `set print object on' is expected.
  67 gdb_test "print rtti_data" " = .*, data = 1\}"
  68
  69 # Printing a pointer into a virtual base of a larger object used to do
  70 # pointer adjusment directly into the value being printed, in-place
  71 # (and did it wrong, too).  Print the pointer, and then access the
  72 # value history to check the pointer value is not changed.  If it had
  73 # been changed, then we'd not be able to find the real type anymore.
  74 gdb_test "print virtual_middle_b" \
  75     " = \\(Virtual \\*\\) $hex <virtual_o>" \
  76     "print pointer to virtual base at non-zero offset of larger object"
  77 gdb_test "print $" \
  78     " = \\(Virtual \\*\\) $hex <virtual_o>" \
  79     "print same pointer from history value"
  80 gdb_test "print *$$" \
  81     " = \\(Virtual\\) {<VirtualMiddleA> = {<VirtualBase> = {_vptr.VirtualBase = ${hex}( <vtable for Virtual.*>)?, x = 0}, _vptr.VirtualMiddleA = ${hex}( <vtable for Virtual.*>)?, y = \\{0 <repeats 300 times>\\}}, <VirtualMiddleB> = {_vptr.VirtualMiddleB = ${hex}( <vtable for Virtual.*>)?, y = 0}, _vptr.Virtual = ${hex}( <vtable for Virtual.*>)?, z = 0}" \
  82     "print whole pointed-to object, starting from the virtual base pointer"