gdb/testsuite/gdb.dwarf2/dw2-weird-type-len.exp

   1 # Copyright 2021-2023 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 load_lib dwarf.exp
  17
  18 # This test can only be run on x86-64 targets.  It checks for a bug
  19 # that existed in amd64-tdep.c, and depends on an error being produced
  20 # from within that file.
  21 if {![istarget x86_64-*] || ![is_lp64_target]} {
  22     return 0
  23 }
  24
  25 # This test can only be run on targets which support DWARF-2 and use gas.
  26 if {![dwarf2_support]} {
  27     return 0
  28 }
  29
  30 standard_testfile .c -dw.S
  31
  32 # Make some DWARF for the test.
  33 set asm_file [standard_output_file $srcfile2]
  34 Dwarf::assemble $asm_file {
  35     global srcfile
  36
  37     get_func_info main
  38     get_func_info get_bar
  39
  40     cu {} {
  41         DW_TAG_compile_unit {
  42             {DW_AT_language @DW_LANG_C}
  43             {DW_AT_name     $srcfile}
  44             {DW_AT_comp_dir /tmp}
  45         } {
  46             declare_labels integer_label foo_t_label bar_t_label
  47
  48             foo_t_label: DW_TAG_structure_type {
  49                 {name foo_t}
  50                 {byte_size 3 DW_FORM_sdata}
  51             } {
  52                 member {
  53                     {name field}
  54                     {type :$integer_label}
  55                     {data_member_location 0 DW_FORM_sdata}
  56                 }
  57             }
  58
  59             integer_label: DW_TAG_base_type {
  60                 {DW_AT_byte_size 3 DW_FORM_sdata}
  61                 {DW_AT_encoding  @DW_ATE_signed}
  62                 {DW_AT_name      integer}
  63             }
  64
  65             bar_t_label: DW_TAG_structure_type {
  66                 {name bar_t}
  67                 {byte_size 3 DW_FORM_sdata}
  68             } {
  69                 member {
  70                     {name f}
  71                     {type :$foo_t_label}
  72                     {data_member_location 0 DW_FORM_sdata}
  73                 }
  74             }
  75
  76             DW_TAG_subprogram {
  77                 {name main}
  78                 {low_pc $main_start addr}
  79                 {high_pc $main_len data8}
  80                 {DW_AT_type :$integer_label}
  81             }
  82
  83             DW_TAG_subprogram {
  84                 {name get_bar}
  85                 {low_pc $get_bar_start addr}
  86                 {high_pc $get_bar_len data8}
  87                 {DW_AT_type :$bar_t_label}
  88             }
  89         }
  90     }
  91 }
  92
  93 if { [prepare_for_testing "failed to prepare" ${testfile} \
  94           [list $srcfile $asm_file] {nodebug}] } {
  95     return -1
  96 }
  97
  98 if ![runto_main] {
  99     return -1
 100 }
 101
 102 # At one point this would trigger a divide by zero inside GDB.  Now we
 103 # just get an error message.
 104 gdb_test "print get_bar ()" "could not determine alignment of type"
 105
 106 # Check GDB is still running.
 107 gdb_test "p 1 + 2" " = 3"