gdb/testsuite/gdb.dwarf2/debug-names-missing-cu.exp

   1 # Copyright 2022-2024 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 targets which support DWARF-2 and use gas.
  19 require dwarf2_support
  20
  21 standard_testfile _start.c debug-names.S
  22
  23 set func_info_vars \
  24     [get_func_info _start [list debug additional_flags=-nostartfiles]]
  25
  26 # Create the DWARF.
  27 set asm_file [standard_output_file $srcfile2]
  28 Dwarf::assemble {
  29     filename $asm_file
  30     add_dummy_cus 0
  31 } {
  32     global func_info_vars
  33     foreach var $func_info_vars {
  34         global $var
  35     }
  36
  37     cu { label cu_label } {
  38         compile_unit {{language @DW_LANG_C}} {
  39             subprogram {
  40                 {DW_AT_name _start}
  41                 {DW_AT_low_pc $_start_start DW_FORM_addr}
  42                 {DW_AT_high_pc $_start_end DW_FORM_addr}
  43             }
  44             base_type {
  45                 {name int}
  46                 {byte_size 4 sdata}
  47                 {encoding @DW_ATE_signed}
  48             }
  49         }
  50     }
  51
  52     # This CU is missing from the cu list in .debug_names.
  53     cu {} {
  54     }
  55
  56     debug_names {} {
  57         cu cu_label
  58         name _start subprogram cu_label 0xEDDB6232
  59         name int base_type cu_label 0xB888030
  60     }
  61 }
  62
  63 if [prepare_for_testing "failed to prepare" $testfile "${asm_file} ${srcfile}" \
  64         [list additional_flags=-nostartfiles]] {
  65     return -1
  66 }
  67
  68 # Verify that .debug_names section is not ignored.
  69 set index [have_index $binfile]
  70 gdb_assert { [string equal $index ""] } ".debug_names not used"
  71
  72 # Verify that initially no symtab is expanded.
  73 gdb_test_no_output "maint info symtabs"
  74
  75 # Verify that _start is found in the debuginfo, rather than in the minimal
  76 # symbols, which would result instead in:
  77 #   $1 = {<text variable, no debug info>} $hex <_start>
  78 gdb_test "print _start" " = {void \\(\\)} $hex <_start>"