gdb/testsuite/gdb.dwarf2/clang-cli-macro.exp

# This testcase is part of GDB, the GNU debugger.

# Copyright 2022-2024 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/>.

# Clang has this bug where it puts the macros defined on the command-line
# after the main file portion (see PR 29034 and
# https://github.com/llvm/llvm-project/issues/54506 )
# Test that GDB is still able to print macros in clang versions that
# have this bug.

load_lib dwarf.exp

require dwarf2_support

standard_testfile .c .S

lassign [function_range main $srcdir/$subdir/$srcfile] \
    main_start main_len

set asm_file [standard_output_file $srcfile2]

Dwarf::assemble $asm_file {
    declare_labels L cu_macros

    cu {} {
	DW_TAG_compile_unit {
	    {DW_AT_producer "clang version 15.0.0"}
	    {DW_AT_language @DW_LANG_C11}
	    {DW_AT_name $::srcfile}
	    {DW_AT_macros $cu_macros DW_FORM_sec_offset}
	    {DW_AT_stmt_list $L 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}
	    }
	}
    }
    lines {version 2} L {
	file_name $::srcfile 1
	program {
	    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" $L
	} {
	    start_file 0 1
		# A macro defined at line 1 of the main file.
		define 1 "TWO 2"
	    end_file
	    define 0 "ONE 1"
	}
    }
}

if {[prepare_for_testing "failed to prepare" $testfile [list $srcfile $asm_file] {nodebug}]} {
    return
}

if {![runto_main]} {
    return
}

gdb_test "print TWO" "= 2" "print simple macro"
gdb_test "print ONE" "= 1" "print defined from CLI"