gdb/testsuite/gdb.dwarf2/dw2-step-out-of-function-no-stmt.exp

# Copyright 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 whether stepping out of a function works, in case:
# - the first insn after the call has an is-stmt=no entry
# - the next insn has an is-stmt=yes entry, for the same line number
#
# This sort of thing can occur in optimized code, f.i. here a slightly more
# elaborate case with another is-stmt=no entry (the one with line number 12)
# inbetween:
# INDEX  LINE   ADDRESS            IS-STMT
# 12     13     0x00000000004003ed
# 13     12     0x00000000004003f2
# 14     13     0x00000000004003f4 Y

load_lib dwarf.exp

# This test can only be run on targets which support DWARF-2 and use gas.
if {![dwarf2_support]} {
    verbose "Skipping $gdb_test_file_name."
    return 0
}

# The .c files use __attribute__.
if [get_compiler_info] {
    return -1
}
if !$gcc_compiled {
    verbose "Skipping $gdb_test_file_name."
    return 0
}

standard_testfile .c -dw.S

set asm_file [standard_output_file $srcfile2]
Dwarf::assemble $asm_file {
    declare_labels Llines
    global srcdir subdir srcfile

    lassign [function_range main [list ${srcdir}/${subdir}/$srcfile]] \
	main_start main_len
    set main_end "$main_start + $main_len"

    lassign [function_range main [list ${srcdir}/${subdir}/$srcfile]] \
	bar_start bar_len
    set bar_end "$bar_start + $bar_len"

    cu {} {
	compile_unit {
	    {language @DW_LANG_C}
	    {name $srcfile}
	    {stmt_list $Llines DW_FORM_sec_offset}
	} {
	    subprogram {
		{external 1 flag}
		{MACRO_AT_func {main}}
	    }
	    subprogram {
		{external 1 flag}
		{MACRO_AT_func {bar}}
	    }
	}
    }

    lines {version 2} Llines {
	include_dir "${srcdir}/${subdir}"
	file_name "$srcfile" 1

	program {
	    {DW_LNE_set_address bar_label}
	    {line 26}
	    {DW_LNS_copy}

	    {DW_LNE_set_address $bar_end}
	    {DW_LNE_end_sequence}

	    {DW_LNE_set_address main_label}
	    {line 32}
	    {DW_LNS_copy}

	    {DW_LNE_set_address main_label_2}
	    {line 36}
	    {DW_LNS_negate_stmt}
	    {DW_LNS_copy}
	    {DW_LNS_negate_stmt}

	    {DW_LNE_set_address main_label_3}
	    {line 36}
	    {DW_LNS_copy}

	    {DW_LNE_set_address $main_end}
	    {DW_LNE_end_sequence}
	}
    }
}

if { [prepare_for_testing "failed to prepare" ${testfile} \
	  [list $srcfile $asm_file] {nodebug}] } {
    return -1
}

if ![runto_main] {
    return -1
}

# Step into bar.
gdb_breakpoint "bar"
gdb_continue_to_breakpoint "bar"

# Step out of bar.
gdb_test "step" [multi_line \
		     "main \\(\\) at \[^\r\n\]*$srcfile:36" \
		     "36\t\[^\r\n\]*"]