| # Copyright 2020 Free Software Foundation, Inc. |
| |
| # This program is free software; you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as published by |
| # the Free Software Foundation; either version 3 of the License, or |
| # (at your option) any later version. |
| # |
| # This program is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| |
| # Test to reproduce the crash described in PR 26813. |
| # |
| # When reading a list in any table in the .debug_rnglists section, GDB would |
| # read the header at offset 0 in the section (the header of the first table). |
| # When the index of the list we read was greater than the number of lists of |
| # the first table, GDB would erroneously report that the index is invalid. |
| # |
| # So this test creates a .debug_rnglists section with two tables. The second |
| # table has more lists than the first one and we try to read a high index in |
| # the second table. |
| |
| load_lib dwarf.exp |
| |
| if {![dwarf2_support]} { |
| return 0 |
| } |
| |
| # Test with 32-bit and 64-bit DWARF. |
| foreach_with_prefix is_64 {false true} { |
| if { $is_64 } { |
| standard_testfile main.c -dw64.S |
| set testfile ${testfile}-dw64 |
| } else { |
| standard_testfile main.c -dw32.S |
| set testfile ${testfile}-dw32 |
| } |
| |
| set asm_file [standard_output_file $srcfile2] |
| Dwarf::assemble $asm_file { |
| global is_64 |
| |
| # The CU uses the DW_FORM_rnglistx form to refer to the .debug_rnglists |
| # section. |
| cu { |
| version 5 |
| is_64 $is_64 |
| } { |
| DW_TAG_compile_unit { |
| {DW_AT_ranges 1 DW_FORM_rnglistx} |
| {DW_AT_rnglists_base cu_table DW_FORM_sec_offset} |
| } { |
| # This tests a DW_AT_ranges attribute of form DW_FORM_rnglistx on a |
| # function, which was buggy at some point. |
| DW_TAG_subprogram { |
| {DW_AT_name "foo"} |
| {DW_AT_ranges 2 DW_FORM_rnglistx} |
| } |
| } |
| } |
| |
| rnglists {is-64 $is_64} { |
| # This table is unused, but exists so that the used table is not at |
| # the beginning of the section. |
| table {} { |
| list_ { |
| start_end 0x1000 0x2000 |
| } |
| } |
| |
| # The lists in this table are accessed by index (DW_FORM_rnglistx). |
| table {post-header-label cu_table} { |
| # This list is unused, but exists to offset the next ones. |
| list_ { |
| start_end 0x2000 0x3000 |
| } |
| |
| # For the CU. |
| list_ { |
| start_end 0x3000 0x4000 |
| } |
| |
| # For function foo. |
| list_ { |
| start_end 0x3000 0x3010 |
| } |
| } |
| } |
| } |
| |
| if { [prepare_for_testing "failed to prepare" ${testfile} \ |
| [list $srcfile $asm_file] {nodebug}] } { |
| return -1 |
| } |
| |
| # Sanity checks to make sure GDB slurped the symbols correctly. |
| gdb_test "p/x &foo" " = 0x3000" |
| } |