gdb/testsuite/gdb.cp/empty-enum.exp

   1 # Copyright 2023 Free Software Foundation, Inc.
   2 # This program is free software; you can redistribute it and/or modify
   3 # it under the terms of the GNU General Public License as published by
   4 # the Free Software Foundation; either version 3 of the License, or
   5 # (at your option) any later version.
   6 #
   7 # This program is distributed in the hope that it will be useful,
   8 # but WITHOUT ANY WARRANTY; without even the implied warranty of
   9 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10 # GNU General Public License for more details.
  11 #
  12 # You should have received a copy of the GNU General Public License
  13 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  14
  15 # Test how GDB displays empty enums.  At one point an enum with no
  16 # enumeration values would be considered a flag enum, and, as a
  17 # consequence any value with that type would display like:
  18 #
  19 #   (gdb) print enum_var
  20 #   $1 = (unknown: 0x8)
  21 #
  22 # Which resulted in a lot of noise.  Now GDB treats empty enums as a
  23 # non-flag enum, and should print them like this:
  24 #
  25 #   (gdb) print enum_var
  26 #   $1 = 8
  27 #
  28 # This test checks this behaviour.
  29
  30 standard_testfile .cc
  31
  32 if {[prepare_for_testing "failed to prepare" $testfile $srcfile]} {
  33     return -1
  34 }
  35
  36 if {![runto_main]} {
  37     return -1
  38 }
  39
  40 gdb_breakpoint "breakpt"
  41 gdb_continue_to_breakpoint "stop in breakpt"
  42
  43
  44 gdb_test "print arg1" " = 8"
  45 gdb_test "print arg2" " = 4"
  46
  47 gdb_test "ptype arg1" "type = enum enum1 : unsigned int \\{\\}"
  48 gdb_test "ptype arg2" "type = enum class enum2 : unsigned char \\{\\}"