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# 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/>.
# Setup a line table where:
#
# | | | | | Inline | Inline |
# | Addr | File | Line | Stmt | Rng A | Rng B |
# |------|------|------|------|--------|--------|
# | 1 | 1 | 16 | Y | | |
# | 2 | 1 | 17 | Y | | |
# | 3 | 2 | 21 | Y | X | |
# | 4 | 2 | 22 | Y | X | |
# | 4 | 1 | 18 | N | X | |
# | 5 | 2 | 23 | N | X | X |
# | 6 | 1 | 24 | Y | | |
# | 7 | 1 | END | Y | | |
# |------|------|------|------|--------|--------|
#
# Places a brekpoint at file 2, line 22. Previously GDB would discard
# the line table entry for this line due to switching files for the
# file 1, line 18 non-statement line. After patching however, GDB now
# discards the file 1, line 18 entry instead, and the breakpoint at
# line 22 should succeed.
#
# The two inlined subroutine ranges 'A' and 'B' represent two possible
# ways that a compiler might represent this siuatio in the DWARF.
#
# Range 'B' is something that has been seen in the wild using GCC 8.2.
# In this case the compilers range information is clearly wrong, but
# this shouldn't impact the main point of the test.
#
# Range 'A' is a hypothetical case of how the compiler might choose to
# represent this range, this has never been seen in the wild, but is
# an improved debug experiece over range 'B'. However, if we ever run
# in to the situation where GDB can support the range 'A' test, or
# support some real DWARF seen in the wild, then the range 'A' case
# should be dropped in favour of supporting real world cases. This is
# included here as it "just worked" once the range 'B' case was
# working.
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 !$gcc_compiled {
return 0
}
# Prepare and run the test.
proc do_test { start_label func_name tag } {
global srcfile srcfile2 srcfile3 srcfile4 testfile
standard_testfile dw2-inline-header-lbls.c dw2-inline-header-${tag}.S \
dw2-inline-header.c dw2-inline-header.h
set build_options {nodebug optimize=-O1}
set asm_file [standard_output_file $srcfile2]
Dwarf::assemble $asm_file {
global srcdir subdir srcfile srcfile3 srcfile4 testfile
upvar build_options build_options
upvar start_label start_label
declare_labels lines_label callee_subprog_label
get_func_info main $build_options
cu {} {
compile_unit {
{producer "gcc" }
{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 $start_label addr}
{high_pc line_label_6 addr}
{call_file 1 data1}
{call_line 18 data1}
}
}
}
}
lines {version 2 default_is_stmt 1} lines_label {
include_dir "${srcdir}/${subdir}"
file_name "$srcfile3" 1
file_name "$srcfile4" 1
program {
{DW_LNE_set_address line_label_1}
{DW_LNS_advance_line 15}
{DW_LNS_copy}
{DW_LNE_set_address line_label_2}
{DW_LNS_advance_line 1}
{DW_LNS_copy}
{DW_LNS_set_file 2}
{DW_LNE_set_address line_label_3}
{DW_LNS_advance_line 4}
{DW_LNS_copy}
{DW_LNE_set_address line_label_4}
{DW_LNS_advance_line 1}
{DW_LNS_copy}
{DW_LNS_advance_line -4}
{DW_LNS_set_file 1}
{DW_LNS_negate_stmt}
{DW_LNS_copy}
{DW_LNS_set_file 2}
{DW_LNE_set_address line_label_5}
{DW_LNS_advance_line 5}
{DW_LNS_copy}
{DW_LNS_negate_stmt}
{DW_LNS_set_file 1}
{DW_LNE_set_address line_label_6}
{DW_LNS_advance_line 1}
{DW_LNS_copy}
{DW_LNE_set_address line_label_7}
{DW_LNE_end_sequence}
}
}
}
if { [prepare_for_testing "failed to prepare" ${testfile}-${tag} \
[list $srcfile $asm_file] $build_options] } {
return -1
}
if ![runto_main] {
return -1
}
# Delete all breakpoints so that the output of "info breakpoints"
# below will only contain a single breakpoint.
delete_breakpoints
# Place a breakpoint within the function in the header file.
gdb_breakpoint "${srcfile4}:22"
# 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 $func_name at \[^\r\n\]+${srcfile4}:22\\y.*" \
"info breakpoints, $tag"
}
do_test line_label_3 "callee" "range-a"
do_test line_label_5 "main" "range-b"
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