projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| bd360d30 AB |
1 | # Copyright 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 | # Some compilers give anonymous structures a linkage name, and that | |
| 17 | # linkage name doesn't demangle (within GDB calling gdb_demangle | |
| 18 | # return NULL). At one point this caused GDB to crash due to | |
| 19 | # dereferencing a NULL pointer. | |
| 20 | ||
| 21 | load_lib dwarf.exp | |
| 22 | ||
| 23 | # This test can only be run on targets which support DWARF-2 and use gas. | |
| 24 | if {![dwarf2_support]} { | |
| 25 | return 0 | |
| 26 | } | |
| 27 | ||
| 28 | standard_testfile cpp-linkage-name.c cpp-linkage-name-debug.S | |
| 29 | ||
| 30 | # Set up the DWARF for the test. | |
| 31 | set asm_file [standard_output_file $srcfile2] | |
| 32 | Dwarf::assemble $asm_file { | |
| 33 | global srcdir subdir srcfile | |
| 34 | ||
| 35 | lassign [function_range main ${srcdir}/${subdir}/${srcfile}] \ | |
| 36 | main_start main_length | |
| 37 | ||
| 38 | cu {} { | |
| 39 | DW_TAG_compile_unit { | |
| 40 | {DW_AT_language @DW_LANG_C_plus_plus} | |
| 41 | {DW_AT_name ada-linkage-name.c} | |
| 42 | {DW_AT_comp_dir /tmp} | |
| 43 | ||
| 44 | } { | |
| 45 | declare_labels a_l b_l | |
| 46 | ||
| 47 | a_l: DW_TAG_base_type { | |
| 48 | {DW_AT_byte_size 4 DW_FORM_sdata} | |
| 49 | {DW_AT_encoding @DW_ATE_signed} | |
| 50 | {DW_AT_name int} | |
| 51 | } | |
| 52 | ||
| 53 | # To expose the bug that existed at one point this | |
| 54 | # structure must have a linkage name, but no name, and the | |
| 55 | # linkage name is something that doesn't demangle. | |
| 56 | b_l: DW_TAG_structure_type { | |
| 57 | {DW_AT_byte_size 8 DW_FORM_sdata} | |
| 58 | {DW_AT_encoding @DW_ATE_signed} | |
| 59 | {DW_AT_linkage_name <anon>} | |
| 60 | } { | |
| 61 | member { | |
| 62 | {name x} | |
| 63 | {type :$a_l} | |
| 64 | {data_member_location 0 data1} | |
| 65 | } | |
| 66 | member { | |
| 67 | {name y} | |
| 68 | {type :$a_l} | |
| 69 | {data_member_location 0 data1} | |
| 70 | } | |
| 71 | } | |
| 72 | DW_TAG_subprogram { | |
| 73 | {name "main"} | |
| 74 | {low_pc $main_start addr} | |
| 75 | {high_pc "$main_start + $main_length" addr} | |
| 76 | {type :$a_l} | |
| 77 | } | |
| 78 | DW_TAG_variable { | |
| 79 | {type :$b_l} | |
| 80 | {external 1 flag} | |
| 81 | {DW_AT_name global_var} | |
| 82 | {DW_AT_location { | |
| 83 | DW_OP_addr [gdb_target_symbol global_var] | |
| 84 | } SPECIAL_expr} | |
| 85 | } | |
| 86 | } | |
| 87 | } | |
| 88 | } | |
| 89 | ||
| 90 | if { [prepare_for_testing "failed to prepare" ${testfile} \ | |
| 91 | [list $srcfile $asm_file] {nodebug}] } { | |
| 92 | return -1 | |
| 93 | } | |
| 94 | ||
| 95 | gdb_assert [runto_main] "run to main" | |
| 96 | gdb_test "p global_var" " = {x = 0, y = 0}" |