| # Copyright 2020-2021 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/>. |
| |
| # Check for an issue in GDB where buildsym_compunit::record_line was |
| # removing duplicate line table entries, but skip_prologue_using_sal |
| # depends on these duplicates to spot the end of the prologue. |
| # |
| # When the de-duplication was added this regression was not spotted as |
| # it requires a particular combination of a (very) small function |
| # being inlined into an also very small outer function. |
| # |
| # This test recreates the exact combination of line table entries that |
| # were seen in the original test using the Dejagnu DWARF compiler. |
| |
| load_lib dwarf.exp |
| |
| # This test can only be run on targets which support DWARF-2 and use gas. |
| if {![dwarf2_support]} { |
| return 0 |
| } |
| |
| # The .c files use __attribute__. |
| if [get_compiler_info] { |
| return -1 |
| } |
| if !$gcc_compiled { |
| return 0 |
| } |
| |
| standard_testfile -lbls.c .S \ |
| .c .h |
| |
| set asm_file [standard_output_file $srcfile2] |
| Dwarf::assemble $asm_file { |
| global srcdir subdir srcfile srcfile3 srcfile4 |
| declare_labels lines_label callee_subprog_label |
| |
| get_func_info main {debug optimize=-O1} |
| |
| cu {} { |
| # It is important that the producer here be 'clang' as, at the |
| # time of writing this, GCC for x86-64 doesn't make use of |
| # skip_prologue_using_sal, while clang does. |
| compile_unit { |
| {producer "clang xxxx" } |
| {language @DW_LANG_C} |
| {name ${srcfile3}} |
| {low_pc 0 addr} |
| {stmt_list ${lines_label} DW_FORM_sec_offset} |
| } { |
| callee_subprog_label: subprogram { |
| {external 1 flag} |
| {name callee} |
| {inline 3 data1} |
| } |
| subprogram { |
| {external 1 flag} |
| {name main} |
| {low_pc $main_start addr} |
| {high_pc "$main_start + $main_len" addr} |
| } { |
| inlined_subroutine { |
| {abstract_origin %$callee_subprog_label} |
| {low_pc line_label_1 addr} |
| {high_pc line_label_2 addr} |
| {call_file 1 data1} |
| {call_line 21 data1} |
| } |
| } |
| } |
| } |
| |
| lines {version 2 default_is_stmt 1} lines_label { |
| include_dir "${srcdir}/${subdir}" |
| file_name "$srcfile3" 1 |
| file_name "$srcfile4" 1 |
| |
| set f1_l1 [gdb_get_line_number "caller: before call" $srcfile3] |
| set f1_l2 [gdb_get_line_number "caller: the call" $srcfile3] |
| set f1_l3 [gdb_get_line_number "caller: after call" $srcfile3] |
| |
| set f2_l1 [gdb_get_line_number "callee: body" $srcfile4] |
| |
| program { |
| {DW_LNE_set_address line_label_1} |
| {line $f1_l1} |
| {DW_LNS_copy} |
| |
| {line ${f1_l2}} |
| {DW_LNS_copy} |
| |
| {DW_LNS_set_file 2} |
| {line ${f2_l1}} |
| {DW_LNS_copy} |
| |
| {DW_LNS_negate_stmt} |
| {DW_LNS_copy} |
| |
| {DW_LNS_set_file 1} |
| {DW_LNE_set_address line_label_2} |
| {line ${f1_l3}} |
| {DW_LNS_copy} |
| |
| {DW_LNE_set_address line_label_3} |
| {DW_LNS_copy} |
| {DW_LNE_end_sequence} |
| } |
| } |
| } |
| |
| if { [prepare_for_testing "failed to prepare" ${testfile} \ |
| [list $srcfile $asm_file] {nodebug optimize=-O1}] } { |
| return -1 |
| } |
| |
| if ![runto_main] { |
| return -1 |
| } |
| |
| # Delete all breakpoints so that the output of "info breakpoints" |
| # below will only contain a single breakpoint. |
| delete_breakpoints |
| |
| # Place a breakpoint within the function in the header file. |
| set linenum [gdb_get_line_number "callee: body" $srcfile4] |
| gdb_breakpoint "${srcfile4}:${linenum}" |
| |
| # Check that the breakpoint was placed where we expected. It should |
| # appear at the requested line. When the bug in GDB was present the |
| # breakpoint would be placed on one of the following lines instead. |
| gdb_test "info breakpoints" \ |
| ".* in callee at \[^\r\n\]+${srcfile4}:${linenum}\\y.*" |