# Copyright 2016-2021 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/>.

standard_testfile .c

if { [build_executable "failed to build" $testfile $srcfile { debug }] == -1 } {
    untested "couldn't compile ${srcfile}"
    return -1
}

# See if we have target board readnow.exp or similar.
if { [lsearch -exact $GDBFLAGS -readnow] != -1 \
	 || [lsearch -exact $GDBFLAGS --readnow] != -1 } {
    untested "--readnever not allowed in combination with --readnow"
    return -1
}

save_vars { GDBFLAGS } {
    append GDBFLAGS " --readnever"
    if { [clean_restart ${binfile}] == -1 } {
       return -1
    }
}

if ![runto_main] then {
    perror "couldn't run to breakpoint"
    continue
}

gdb_test "break fun_three" \
         "Breakpoint $decimal at $hex"

gdb_test "continue" \
         "Breakpoint $decimal, $hex in fun_three \\(\\)"

gdb_test "backtrace" \
         [multi_line "#0  $hex in fun_three \\(\\)" \
                     "#1  $hex in fun_two \\(\\)" \
                     "#2  $hex in fun_one \\(\\)" \
                     "#3  $hex in main \\(\\)" ]

gdb_test_no_output "maint info symtabs" \
    "maint info symtabs no output for --readnever"
gdb_test_no_output "maint info psymtabs" \
    "maint info psymtabs no output for --readnever"

# Test invalid combination of flags.
save_vars { GDBFLAGS } {
    append GDBFLAGS " --readnever --readnow"
    gdb_exit
    gdb_spawn

    set test "test readnow and readnever at the same time"
    gdb_test_multiple "" $test {
	"'--readnow' and '--readnever' cannot be specified simultaneously" {
	    pass $test
	    set test "expect eof after failure"
	    gdb_test_multiple "" $test {
		eof {
		    pass $test
		}
	    }
	}
    }
}


# Test symbol-file's -readnever option.

# Restart GDB without the --readnever option.
gdb_exit
gdb_start
gdb_test "symbol-file ${binfile}0.o -readnever" \
    "Reading symbols from ${binfile}0\.o\.\.\.\r\n\\\(No debugging symbols found in .*\\\)" \
    "use symbol-file -readnever"

gdb_test_no_output "maint info symtabs" \
    "maint info symtabs no output for symbol-file -readnever"
gdb_test_no_output "maint info psymtabs" \
    "maint info psymtabs no output for symbol-file -readnever"