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# This testcase is part of GDB, the GNU debugger.
# Copyright 2022-2025 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/>.
# Generate binaries imitating different ways source file paths can be passed to
# compilers. Test printing macros from those binaries.
#
# The entry points for this test are in the various
# gdb.dwarf2/macro-source-path-*.exp files.
load_lib dwarf.exp
require dwarf2_support
standard_testfile macro-source-path.c
lassign [function_range main $srcdir/$subdir/$srcfile] \
main_start main_len
# Run one test.
#
# - TEST_NAME is the name of the test, used to differentiate the binaries.
# - LINES_VERSION is the version of the version of the .debug_line section to
# generate.
# - DW_AT_NAME is the string to put in the compilation unit's DW_AT_name
# attribute.
# - MAIN_FILE_IDX is the file index the .debug_line and .debug_macro sections
# will use to refer to the main file.
# - DIRECTORIES is a list of directories to put in the .debug_line section
# header
# - FILE_NAMES is a list of {name, directory index} pairs describing the files
# names to put in the .debug_line section header.
proc do_test { test_name lines_version DW_AT_name main_file_idx directories
file_names } {
with_test_prefix "test_name=$test_name" {
foreach_with_prefix is_64 {true false} {
# So we can access them in Dwarf::assemble...
set ::lines_version $lines_version
set ::DW_AT_name $DW_AT_name
set ::main_file_idx $main_file_idx
set ::directories $directories
set ::file_names $file_names
set ::is_64 $is_64
set 32_or_64 [expr $is_64 ? 64 : 32]
set asm_file [standard_output_file ${::testfile}-${test_name}-${32_or_64}.S]
Dwarf::assemble $asm_file {
declare_labels Llines cu_macros
# DW_AT_comp_dir is always the current working directory
# from which the compiler was invoked. We pretend the compiler was
# always launched from /tmp/cwd.
set comp_dir "/tmp/cwd"
cu {} {
DW_TAG_compile_unit {
{DW_AT_producer "My C Compiler"}
{DW_AT_language @DW_LANG_C11}
{DW_AT_name $::DW_AT_name}
{DW_AT_comp_dir $comp_dir}
{DW_AT_stmt_list $Llines DW_FORM_sec_offset}
{DW_AT_macros $cu_macros DW_FORM_sec_offset}
} {
declare_labels int_type
int_type: DW_TAG_base_type {
{DW_AT_byte_size 4 DW_FORM_sdata}
{DW_AT_encoding @DW_ATE_signed}
{DW_AT_name int}
}
DW_TAG_subprogram {
{MACRO_AT_func {main}}
{type :$int_type}
}
}
}
# Define the .debug_line section.
lines [list version $::lines_version] "Llines" {
foreach directory $::directories {
include_dir $directory
}
foreach file_name $::file_names {
lassign $file_name name dir_index
file_name $name $dir_index
}
# A line number program just good enough so that GDB can
# figure out we are stopped in main.
program {
DW_LNS_set_file $::main_file_idx
DW_LNE_set_address $::main_start
line 10
DW_LNS_copy
DW_LNE_set_address "$::main_start + $::main_len"
DW_LNE_end_sequence
}
}
# Define the .debug_macro section.
macro {
cu_macros: unit {
"debug-line-offset-label" $Llines
"is-64" $::is_64
} {
# A macro defined outside the main file, as if it was defined
# on the command line with -D.
#
# Clang has this bug where it puts the macros defined on
# the command-line after the main file portion (see
# PR 29034). We're not trying to replicate that here,
# this is not in the scope of this test.
define 0 "ONE 1"
define_strp 0 "THREE 3"
start_file 0 $::main_file_idx
# A macro defined at line 1 of the main file.
define 1 "TWO 2"
end_file
}
}
}
if { [prepare_for_testing "failed to prepare" ${::testfile}-${test_name}-${32_or_64} \
[list $::srcfile $asm_file] {nodebug}] } {
return
}
with_complaints 5 {
gdb_test_multiple "print main" "no complaints" {
-wrap -re "During symbol reading: .*" {
fail $gdb_test_name
}
-wrap -re "" {
pass $gdb_test_name
}
}
}
if ![runto_main] {
return
}
gdb_test "print ONE" " = 1"
gdb_test "print TWO" " = 2"
gdb_test "print THREE" " = 3"
}
}
}
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