1# Copyright 2020-2023 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# Test to reproduce the crash described in PR 26813. 17# 18# When reading a list in any table in the .debug_rnglists section, GDB would 19# read the header at offset 0 in the section (the header of the first table). 20# When the index of the list we read was greater than the number of lists of 21# the first table, GDB would erroneously report that the index is invalid. 22# 23# So this test creates a .debug_rnglists section with two tables. The second 24# table has more lists than the first one and we try to read a high index in 25# the second table. 26 27load_lib dwarf.exp 28 29if {![dwarf2_support]} { 30 return 0 31} 32 33# Test with 32-bit and 64-bit DWARF. 34foreach_with_prefix is_64 {false true} { 35 if { $is_64 } { 36 standard_testfile main.c -dw64.S 37 set testfile ${testfile}-dw64 38 } else { 39 standard_testfile main.c -dw32.S 40 set testfile ${testfile}-dw32 41 } 42 43 set asm_file [standard_output_file $srcfile2] 44 Dwarf::assemble $asm_file { 45 global is_64 46 47 # The CU uses the DW_FORM_rnglistx form to refer to the .debug_rnglists 48 # section. 49 cu { 50 version 5 51 is_64 $is_64 52 } { 53 DW_TAG_compile_unit { 54 {DW_AT_ranges 1 DW_FORM_rnglistx} 55 {DW_AT_rnglists_base cu_table DW_FORM_sec_offset} 56 } { 57 # This tests a DW_AT_ranges attribute of form DW_FORM_rnglistx on a 58 # function, which was buggy at some point. 59 DW_TAG_subprogram { 60 {DW_AT_name "foo"} 61 {DW_AT_ranges 2 DW_FORM_rnglistx} 62 } 63 } 64 } 65 66 rnglists {is-64 $is_64} { 67 # This table is unused, but exists so that the used table is not at 68 # the beginning of the section. 69 table {} { 70 list_ { 71 start_end 0x1000 0x2000 72 } 73 } 74 75 # The lists in this table are accessed by index (DW_FORM_rnglistx). 76 table {post-header-label cu_table} { 77 # This list is unused, but exists to offset the next ones. 78 list_ { 79 start_end 0x2000 0x3000 80 } 81 82 # For the CU. 83 list_ { 84 start_end 0x3000 0x4000 85 } 86 87 # For function foo. 88 list_ { 89 start_end 0x3000 0x3010 90 } 91 } 92 } 93 } 94 95 if { [prepare_for_testing "failed to prepare" ${testfile} \ 96 [list $srcfile $asm_file] {nodebug}] } { 97 return -1 98 } 99 100 # Sanity checks to make sure GDB slurped the symbols correctly. 101 gdb_test "p/x &foo" " = 0x3000" 102} 103