gdb/testsuite/gdb.dwarf2/implptr-optimized-out.exp

   1 # Copyright 2011-2022 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 load_lib dwarf.exp
  16
  17 # This test can only be run on targets which support DWARF-2 and use gas.
  18 if {![dwarf2_support]} {
  19     return 0
  20 }
  21
  22 standard_testfile main.c .S
  23 set executable ${testfile}
  24
  25 # Create the DWARF.
  26 set asm_file [standard_output_file $srcfile2]
  27 Dwarf::assemble $asm_file {
  28     cu { version 3 addr_size 4 } {
  29         compile_unit {
  30             {producer "GNU C 4.4.3"}
  31             {language @DW_LANG_C89}
  32             {name 1.c}
  33         } {
  34             declare_labels int_label struct_label pointer_label variable_label
  35
  36             int_label: base_type {
  37                 {byte_size 4 sdata}
  38                 {encoding @DW_ATE_signed}
  39                 {name int}
  40             }
  41
  42             struct_label: structure_type {
  43                 {name s}
  44                 {byte_size 4 sdata}
  45             } {
  46                 member {
  47                     {name f}
  48                     {type :$int_label}
  49                     {data_member_location 0 data1}
  50                 }
  51             }
  52
  53             subprogram {
  54                 {MACRO_AT_func { main }}
  55                 {type :$int_label}
  56                 {external 1 flag}
  57             } {
  58                 pointer_label: pointer_type {
  59                     {byte_size 4 sdata}
  60                     {type :$struct_label}
  61                 }
  62
  63                 variable_label: DW_TAG_variable {
  64                     {name v}
  65                     {location {} DW_FORM_block1}
  66                     {type :$struct_label}
  67                 }
  68
  69                 DW_TAG_variable {
  70                     {name p}
  71                     {location {
  72                         GNU_implicit_pointer $variable_label 0
  73                     } SPECIAL_expr}
  74                     {type :$pointer_label}
  75                 }
  76             }
  77         }
  78     }
  79 }
  80
  81 if [prepare_for_testing "failed to prepare" $executable "${asm_file} ${srcfile}" {}] {
  82     return -1
  83 }
  84
  85 # DW_OP_GNU_implicit_pointer implementation requires a valid frame.
  86 if ![runto_main] {
  87     return -1
  88 }
  89
  90 gdb_test "p p->f" " = <optimized out>"