gdb/testsuite/gdb.base/vla-struct-fields.exp

   1 # Copyright 2014-2021 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 standard_testfile
  17
  18 # Clang says it will never support variable length arrays in structures.
  19 if {[test_compiler_info clang*]} {
  20     unsupported "compiler does not support variable length arrays in structure"
  21     return
  22 }
  23
  24 if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile}] } {
  25     return -1
  26 }
  27
  28 if ![runto_main] {
  29     return -1
  30 }
  31
  32 gdb_breakpoint [gdb_get_line_number "vlas_filled"]
  33 gdb_continue_to_breakpoint "vlas_filled"
  34
  35 # Check the values of VLA's.
  36 gdb_test "print vla_struct_object" \
  37     "\\\{something = 5, vla_field = \\\{0, 2, 4, 6, 8\\\}\\\}"
  38 gdb_test "print vla_union_object" \
  39     "\\\{vla_field = \\\{0, 2, 4, 6, 8\\\}\\\}"
  40 gdb_test "print vla_struct_typedef_struct_member_object" \
  41     "\\\{something = 10, vla_object = \\\{something = 15, vla_field = \\\{0, 3, 6, 9, 12\\\}\\\}\\\}"
  42 gdb_test "print vla_struct_typedef_union_member_object" \
  43     "\\\{something = 6, vla_object = \\\{something = 6, vla_field = \\\{-1, 2, 5, 8, 11\\\}\\\}\\\}"
  44
  45 # Check whatis of VLA's.
  46 gdb_test "whatis vla_struct_object" "type = vla_struct_typedef"
  47 gdb_test "whatis vla_union_object" "type = union vla_union"
  48
  49 # Check ptype of VLA's.
  50 gdb_test "ptype vla_struct_object" \
  51     "type = struct vla_struct {\r\n\\s+int something;\r\n\\s+int vla_field\\\[5\\\];\r\n}"
  52 gdb_test "ptype vla_union_object" \
  53     "type = union vla_union {\r\n\\s+int vla_field\\\[5\\\];\r\n}"
  54
  55 # Check the size of the VLA's.
  56 gdb_breakpoint [gdb_get_line_number "break_end_of_vla_factory"]
  57 gdb_continue_to_breakpoint "break_end_of_vla_factory"
  58 gdb_test "print vla_struct_object_size == sizeof(vla_struct_object)" \
  59     " = 1" "size of vla_struct_object"
  60 gdb_test "print vla_union_object_size == sizeof(vla_union_object)" \
  61     " = 1" "size of vla_union_object"
  62
  63 # Fails due to incorrect debugging information generated by GCC.
  64 setup_xfail "*-*-*"
  65 gdb_test \
  66     "print inner_vla_struct_object_size == sizeof(inner_vla_struct_object)" \
  67     " = 1" "size of inner_vla_struct_object"