gdb/testsuite/gdb.dwarf2/typedef-void-finish.exp

   1 # Copyright 2019-2022 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
  16 # PR gdb/21855 concerns a crash in "finish" where the function's
  17 # return type is a typedef of void.
  18
  19 load_lib dwarf.exp
  20 load_lib gdb-python.exp
  21
  22 # This test can only be run on targets which support DWARF-2 and use gas.
  23 if {![dwarf2_support]} {
  24     return 0
  25 }
  26
  27 standard_testfile void-type.c .S
  28
  29 # Make some DWARF for the test.
  30 set asm_file [standard_output_file $srcfile2]
  31 Dwarf::assemble $asm_file {
  32     global srcfile
  33
  34     cu {} {
  35         DW_TAG_compile_unit {
  36                 {DW_AT_producer "GNU C 8.1"}
  37                 {DW_AT_language @DW_LANG_C}
  38                 {DW_AT_name     $srcfile}
  39                 {DW_AT_comp_dir /tmp}
  40         } {
  41             declare_labels main_type void_typedef
  42
  43             main_type: DW_TAG_base_type {
  44                 {DW_AT_byte_size 4 DW_FORM_sdata}
  45                 {DW_AT_encoding  @DW_ATE_signed}
  46             }
  47
  48             void_typedef: DW_TAG_typedef {
  49                 {name foo}
  50             }
  51
  52             DW_TAG_subprogram {
  53                 {MACRO_AT_func {func}}
  54                 {type :$void_typedef}
  55             }
  56             DW_TAG_subprogram {
  57                 {MACRO_AT_func {main}}
  58                 {type :$main_type}
  59             }
  60         }
  61     }
  62 }
  63
  64 if { [prepare_for_testing "failed to prepare" ${testfile} \
  65           [list $srcfile $asm_file] {nodebug}] } {
  66     return -1
  67 }
  68
  69 if {![runto_main]} {
  70     return -1
  71 }
  72
  73 gdb_test "break func" "Breakpoint .*" \
  74     "set breakpoint in func"
  75 gdb_continue_to_breakpoint "continue to func"
  76
  77 set skip_python [skip_python_tests]
  78 if {!$skip_python} {
  79     gdb_test "python finishbp = gdb.FinishBreakpoint()" \
  80         "Temporary breakpoint.*" "set FinishBreakpoint"
  81 }
  82
  83 gdb_test "finish" [multi_line \
  84                        "Run till exit from #0  $hex in func \\\(\\\)" \
  85                        ".*$hex in main \\\(\\\)"]
  86
  87 if {!$skip_python} {
  88     gdb_test "python print (finishbp.return_value)" "None" \
  89         "check that return_value is None"
  90 }