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

   1 # Copyright 2019-2020 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 typedef-void-finish.S
  28
  29 # Make some DWARF for the test.
  30 set asm_file [standard_output_file $srcfile2]
  31 Dwarf::assemble $asm_file {
  32     global srcdir subdir srcfile
  33
  34     set func_result [function_range func ${srcdir}/${subdir}/${srcfile}]
  35     set func_start [lindex $func_result 0]
  36     set func_length [lindex $func_result 1]
  37
  38     set main_result [function_range main ${srcdir}/${subdir}/${srcfile}]
  39     set main_start [lindex $main_result 0]
  40     set main_length [lindex $main_result 1]
  41
  42     cu {} {
  43         DW_TAG_compile_unit {
  44                 {DW_AT_producer "GNU C 8.1"}
  45                 {DW_AT_language @DW_LANG_C}
  46                 {DW_AT_name     void-type.c}
  47                 {DW_AT_comp_dir /tmp}
  48         } {
  49             declare_labels main_type void_typedef
  50
  51             main_type: DW_TAG_base_type {
  52                 {DW_AT_byte_size 4 DW_FORM_sdata}
  53                 {DW_AT_encoding  @DW_ATE_signed}
  54             }
  55
  56             void_typedef: DW_TAG_typedef {
  57                 {name foo}
  58             }
  59
  60             DW_TAG_subprogram {
  61                 {name func}
  62                 {low_pc $func_start addr}
  63                 {high_pc "$func_start + $func_length" addr}
  64                 {type :$void_typedef}
  65             }
  66             DW_TAG_subprogram {
  67                 {name main}
  68                 {low_pc $main_start addr}
  69                 {high_pc "$main_start + $main_length" addr}
  70                 {type :$main_type}
  71             }
  72         }
  73     }
  74 }
  75
  76 if { [prepare_for_testing "failed to prepare" ${testfile} \
  77           [list $srcfile $asm_file] {nodebug}] } {
  78     return -1
  79 }
  80
  81 if {![runto_main]} {
  82     return -1
  83 }
  84
  85 gdb_test "break func" "Breakpoint .*" \
  86     "set breakpoint in func"
  87 gdb_continue_to_breakpoint "continue to func"
  88
  89 set skip_python [skip_python_tests]
  90 if {!$skip_python} {
  91     gdb_test "python finishbp = gdb.FinishBreakpoint()" \
  92         "Temporary breakpoint.*" "set FinishBreakpoint"
  93 }
  94
  95 gdb_test "finish" [multi_line \
  96                        "Run till exit from #0  $hex in func \\\(\\\)" \
  97                        ".*$hex in main \\\(\\\)"]
  98
  99 if {!$skip_python} {
 100     gdb_test "python print (finishbp.return_value)" "None" \
 101         "check that return_value is None"
 102 }