testsuite/gdb.base/scope.exp

# Copyright 1992-2023 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/>.

# This file was written by Fred Fish. (fnf (at) cygnus.com)


standard_testfile scope0.c scope1.c

if {[build_executable "failed to build" ${testfile} \
	 [list $srcfile $srcfile2] {debug}]} {
    return -1
}

# Test locating various things when stopped just inside main, after
# running init0().  To prevent cascading of errors, we report the
# first one and quit.  If all pass, then we print the pass results.

proc_with_prefix test_at_main {} {
    global gdb_prompt
    global decimal
    global det_file
    global srcdir
    global subdir

    # skip past init0.
    # This used to do an extra "next" if the first one didn't get us
    # over the call to init0, to handle calls to __main in the
    # prologue, etc.  But if a breakpoint at main doesn't leave us on
    # the first line of real code in the function, that's a GDB bug.
    gdb_test "next" "$decimal.*foo \\(\\);" "next over init0() in main"

    # Print scope0.c::filelocal, which is 1
    gdb_test "print filelocal" "\\\$$decimal = 1"
    gdb_test "print 'scope0.c'::filelocal" "\\\$$decimal = 1" "print 'scope0.c'::filelocal at main"

    # Print scope0.c::filelocal_bss, which is 101
    gdb_test "print filelocal_bss" "\\\$$decimal = 101"
    gdb_test "print 'scope0.c'::filelocal_bss" "\\\$$decimal = 101" "print 'scope0.c'::filelocal_bss in test_at_main"

    # Print scope0.c::filelocal_ro, which is 201

    # No clue why the rs6000 fails this test.
    if {[test_compiler_info gcc-*-*]} { setup_xfail "rs6000-*-*" }
    gdb_test "print filelocal_ro" "\\\$$decimal = 201" "print filelocal_ro in test_at_main"

    if {[test_compiler_info gcc-*-*]} { setup_xfail "rs6000-*-*" }
    gdb_test "print 'scope0.c'::filelocal_ro" "\\\$$decimal = 201" "print 'scope0.c'::filelocal_ro"

    # Print scope1.c::filelocal, which is 2
    if {[test_compiler_info gcc-*-*]} { setup_xfail "rs6000-*-*" }
    gdb_test "print 'scope1.c'::filelocal" "\\\$$decimal = 2" "print 'scope1.c'::filelocal"

    # Print scope1.c::filelocal_bss, which is 102
    if {[test_compiler_info gcc-*-*]} { setup_xfail "rs6000-*-*" }
    gdb_test "print 'scope1.c'::filelocal_bss" "\\\$$decimal = 102" "print 'scope1.c'::filelocal_bss"

    # Print scope1.c::filelocal_ro, which is 202
    if {[test_compiler_info gcc-*-*]} { setup_xfail "rs6000-*-*" }
    gdb_test "print 'scope1.c'::filelocal_ro" "\\\$$decimal = 202" "print 'scope1.c'::filelocal_ro"

    # Print scope1.c::foo::funclocal, which is 3
    gdb_test "print foo::funclocal" "\\\$$decimal = 3"

    if {[test_compiler_info gcc-*-*]} { setup_xfail "rs6000-*-*" }
    gdb_test "print 'scope1.c'::foo::funclocal" "\\\$$decimal = 3" "print 'scope1.c'::foo::funclocal"

    # Print scope1.c::foo::funclocal_ro, which is 203
    gdb_test "print foo::funclocal_ro" "\\\$$decimal = 203"

    if {[test_compiler_info gcc-*-*]} { setup_xfail "rs6000-*-*" }
    gdb_test "print 'scope1.c'::foo::funclocal_ro" "\\\$$decimal = 203" "print 'scope1.c'::foo::funclocal_ro"

    # Print scope1.c::bar::funclocal, which is 4
    gdb_test "print bar::funclocal" "\\\$$decimal = 4"

    if {[test_compiler_info gcc-*-*]} { setup_xfail "rs6000-*-*" }
    gdb_test "print 'scope1.c'::bar::funclocal" "\\\$$decimal = 4" "print 'scope1.c'::bar::funclocal"
}

proc_with_prefix test_at_foo {} {
    global gdb_prompt
    global decimal
    global det_file
    global srcdir
    global subdir

    gdb_test "next" ".*bar \\(\\);"

    # Print scope0.c::filelocal, which is 1
    gdb_test "print 'scope0.c'::filelocal" "\\\$$decimal = 1" "print 'scope0.c'::filelocal at foo"

    # Print scope0.c::filelocal_bss, which is 101
    gdb_test "print 'scope0.c'::filelocal_bss" "\\\$$decimal = 101" "print 'scope0.c'::filelocal_bss in test_at_foo"

    # Print scope0.c::filelocal_ro, which is 201
    if {[test_compiler_info gcc-*-*]} { setup_xfail "rs6000-*-*" }
    gdb_test "print 'scope0.c'::filelocal_ro" "\\\$$decimal = 201" "print 'scope0.c'::filelocal_ro"


    # Print scope1.c::filelocal, which is 2
    gdb_test "print filelocal" "\\\$$decimal = 2" "print filelocal at foo"

    if {[test_compiler_info gcc-*-*]} { setup_xfail "rs6000-*-*" }
    gdb_test "print 'scope1.c'::filelocal" "\\\$$decimal = 2" "print 'scope1.c'::filelocal at foo"

    gdb_test "print filelocal_bss" "\\\$$decimal = 102" \
	"print filelocal_bss at foo"

    if {[test_compiler_info gcc-*-*]} { setup_xfail "rs6000-*-*" }
    gdb_test "print 'scope1.c'::filelocal_bss" "\\\$$decimal = 102" "print 'scope1.c'::filelocal_bss at foo"


    gdb_test "print filelocal_ro" "\\\$$decimal = 202" \
	"print filelocal_ro at foo"

    if {[test_compiler_info gcc-*-*]} { setup_xfail "rs6000-*-*" }
    gdb_test "print 'scope1.c'::filelocal_ro" "\\\$$decimal = 202" "print 'scope1.c'::filelocal_ro at foo"


    # Print scope1.c::foo::funclocal, which is 3

    gdb_test "print funclocal" "\\\$$decimal = 3" "print funclocal at foo"

    gdb_test "print foo::funclocal" "\\\$$decimal = 3" \
	"print foo::funclocal at foo"

    if {[test_compiler_info gcc-*-*]} { setup_xfail "rs6000-*-*" }
    gdb_test "print 'scope1.c'::foo::funclocal" "\\\$$decimal = 3" "print 'scope1.c'::foo::funclocal at foo"


    # Print scope1.c::foo::funclocal_bss, which is 103

    gdb_test "print funclocal_bss" "\\\$$decimal = 103" \
	"print funclocal_bss at foo"

    gdb_test "print foo::funclocal_bss" "\\\$$decimal = 103" \
	"print foo::funclocal_bss at foo"

    if {[test_compiler_info gcc-*-*]} { setup_xfail "rs6000-*-*" }
    gdb_test "print 'scope1.c'::foo::funclocal_bss" "\\\$$decimal = 103" "print 'scope1.c'::foo::funclocal_bss at foo"


    # Print scope1.c::foo::funclocal_ro, which is 203

    gdb_test "print funclocal_ro" "\\\$$decimal = 203" \
	"print funclocal_ro at foo"

    gdb_test "print foo::funclocal_ro" "\\\$$decimal = 203" \
	"print foo::funclocal_ro at foo"

    if {[test_compiler_info gcc-*-*]} { setup_xfail "rs6000-*-*" }
    gdb_test "print 'scope1.c'::foo::funclocal_ro" "\\\$$decimal = 203" "print 'scope1.c'::foo::funclocal_ro at foo"


    # Print scope1.c::bar::funclocal, which is 4

    gdb_test "print bar::funclocal" "\\\$$decimal = 4" \
	"print bar::funclocal at foo"

    if {[test_compiler_info gcc-*-*]} { setup_xfail "rs6000-*-*" }
    gdb_test "print 'scope1.c'::bar::funclocal" "\\\$$decimal = 4" "print 'scope1.c'::bar::funclocal at foo"

}

proc_with_prefix test_at_bar {} {
    global gdb_prompt
    global decimal
    global det_file
    global srcdir
    global subdir

    gdb_test "next"

    # Print scope0.c::filelocal, which is 1
    gdb_test "print 'scope0.c'::filelocal" "\\\$$decimal = 1" "print 'scope0.c'::filelocal at bar"

    # Print scope0.c::filelocal_bss, which is 101
    gdb_test "print 'scope0.c'::filelocal_bss" "\\\$$decimal = 101" "print 'scope0.c'::filelocal_bss in test_at_bar"

    # Print scope0.c::filelocal_ro, which is 201
    if {[test_compiler_info gcc-*-*]} { setup_xfail "rs6000-*-*" }
    gdb_test "print 'scope0.c'::filelocal_ro" "\\\$$decimal = 201" "print 'scope0.c'::filelocal_ro at bar"

    # Print scope1.c::filelocal, which is 2
    gdb_test "print filelocal" "\\\$$decimal = 2" "print filelocal at bar"

    if {[test_compiler_info gcc-*-*]} { setup_xfail "rs6000-*-*" }
    gdb_test "print 'scope1.c'::filelocal" "\\\$$decimal = 2" "print 'scope1.c'::filelocal at bar"

    # Print scope1.c::filelocal_bss, which is 102
    gdb_test "print filelocal_bss" "\\\$$decimal = 102" "print filelocal_bss at bar"

    if {[test_compiler_info gcc-*-*]} { setup_xfail "rs6000-*-*" }
    gdb_test "print 'scope1.c'::filelocal_bss" "\\\$$decimal = 102" "print 'scope1.c'::filelocal_bss at bar"

    # Print scope1.c::filelocal_ro, which is 202
    gdb_test "print filelocal_ro" "\\\$$decimal = 202" "print filelocal_ro in test_at_bar"

    if {[test_compiler_info gcc-*-*]} { setup_xfail "rs6000-*-*" }
    gdb_test "print 'scope1.c'::filelocal_ro" "\\\$$decimal = 202" "print 'scope1.c'::filelocal_ro at bar"

    # Print scope1.c::foo::funclocal, which is 3
    gdb_test "print foo::funclocal" "\\\$$decimal = 3" "print foo::funclocal at bar"

    if {[test_compiler_info gcc-*-*]} { setup_xfail "rs6000-*-*" }
    gdb_test "print 'scope1.c'::foo::funclocal" "\\\$$decimal = 3" "print 'scope1.c'::foo::funclocal at bar"

    # Print scope1.c::foo::funclocal_bss, which is 103
    gdb_test "print foo::funclocal_bss" "\\\$$decimal = 103" "print foo::funclocal_bss at bar"

    if {[test_compiler_info gcc-*-*]} { setup_xfail "rs6000-*-*" }
    gdb_test "print 'scope1.c'::foo::funclocal_bss" "\\\$$decimal = 103" "print 'scope1.c'::foo::funclocal_bss at bar"

    # Print scope1.c::foo::funclocal_ro, which is 203
    gdb_test "print foo::funclocal_ro" "\\\$$decimal = 203" "print foo::funclocal_ro at bar"

    if {[test_compiler_info gcc-*-*]} { setup_xfail "rs6000-*-*" }
    gdb_test "print 'scope1.c'::foo::funclocal_ro" "\\\$$decimal = 203" "print 'scope1.c'::foo::funclocal_ro at bar"

    # Print scope1.c::bar::funclocal, which is 4
    gdb_test "print funclocal" "\\\$$decimal = 4" "print funclocal at bar"
    gdb_test "print bar::funclocal" "\\\$$decimal = 4" "print bar::funclocal at bar"

    if {[test_compiler_info gcc-*-*]} { setup_xfail "rs6000-*-*" }
    gdb_test "print 'scope1.c'::bar::funclocal" "\\\$$decimal = 4" "print 'scope1.c'::bar::funclocal at bar"

    # Print scope1.c::bar::funclocal_bss, which is 104
    gdb_test "print funclocal_bss" "\\\$$decimal = 104" "print funclocal_bss at bar"
    gdb_test "print bar::funclocal_bss" "\\\$$decimal = 104" "print bar::funclocal_bss at bar"

    if {[test_compiler_info gcc-*-*]} { setup_xfail "rs6000-*-*" }
    gdb_test "print 'scope1.c'::bar::funclocal_bss" "\\\$$decimal = 104" "print 'scope1.c'::bar::funclocal_bss at bar"
}

# This test has little to do with local scopes, but it is in scope.exp anyway.
# That's life.

proc_with_prefix test_at_autovars {} {
    global gdb_prompt
    global decimal
    global hex
    global srcfile

    # Test symbol table lookup with 100 local (auto) variables.

    gdb_breakpoint marker1

    gdb_test "cont" "Break.* marker1 \\(\\) at .*:$decimal.*" "continue to marker1"
    gdb_test "up" ".*autovars.*" "up from marker1"

    set count 0
    while {$count < 100} {
	gdb_test "print i$count" ".* = $count" ""
	set count [expr $count+1]
    }
    clear_xfail "*-*-*"
    pass "$count auto variables correctly initialized"

    # Test that block variable sorting is not screwing us.
    gdb_test "frame" "#.*autovars \\(bcd=5, abc=6\\).*" "args in correct order"
}

proc_with_prefix test_at_localscopes {} {
    global gdb_prompt
    global decimal
    global hex
    global srcfile

    gdb_breakpoint marker2
    gdb_breakpoint marker3
    gdb_breakpoint marker4

    gdb_test "cont" "Break.* marker2 \\(\\) at .*:$decimal.*" "continue to marker2"
    gdb_test "up" ".*localscopes.*" "up from marker2"

    # Should be at first (outermost) scope.  Check values.

    gdb_test "print localval" " = 10" "print localval, outer scope"
    gdb_test "print localval1" " = 11" "print localval1, outer scope"
    gdb_test "print localval2" "No symbol \"localval2\" in current context." \
	"print localval2, outer scope"
    gdb_test "print localval3" "No symbol \"localval3\" in current context." \
	"print localval3, outer scope"

    gdb_test "cont" "Break.* marker3 \\(\\) at .*:$decimal.*" \
	"continue to marker3"
    gdb_test "up" ".*localscopes.*" "up from marker3"

    # Should be at next (first nested) scope.  Check values.

    gdb_test "print localval" " = 20" \
	"print localval, first nested scope"
    gdb_test "print localval1" " = 11" "print localval1, first nested scope"
    gdb_test "print localval2" " = 12" "print localval2, first nested scope"
    gdb_test "print localval3" "No symbol \"localval3\" in current context." \
	"print localval3, first nested scope"

    # This test will only fail if the file was compiled by gcc, but
    # there's no way to check that.
    gdb_test "cont" "Break.* marker4.*at .*:$decimal.*" \
	"continue to marker4"
    gdb_test "up" ".*localscopes.*" "up from marker4"

    gdb_test "print localval" " = 30" "print localval, innermost scope"
    gdb_test "print localval1" " = 11" "print localval1, innermost scope"
    gdb_test "print localval2" " = 12" "print localval2, innermost scope"
    gdb_test "print localval3" " = 13" "print localval3, innermost scope"
}

# Note, we don't pass a binfile to clean_restart because we need to
# avoid gdb_load here.  With remote targets, gdb_load connects to the
# remote target, and we specificaly want the following tests to run
# before the program is started.
clean_restart
gdb_file_cmd $binfile

# Test that variables in various segments print out correctly before
# the program is run.

# AIX--sections get mapped to the same address so we can't get the right one.
setup_xfail "rs6000-*-*"

gdb_test "print 'scope0.c'::filelocal_ro" "= 201"

# Check that gdb can access bss memory if the inferior is not running.
#
# Note the care above about avoiding gdb_load.  Otherwise, for
# embedded stub-like boards, this test would randomly fail.  If we'd
# already put target remote on the target stack, we'd read memory from
# the board instead of the program's binary, and we would have
# connected before crt0.o had had a chance to clear bss.
gdb_test "print 'scope0.c'::filelocal_bss" "= 0" \
    "print 'scope0.c'::filelocal_bss before run"

gdb_test "print 'scope0.c'::filelocal" "= 1" \
    "print 'scope0.c'::filelocal before run"

if {[runto_main]} { test_at_main }
if {[runto foo]} { test_at_foo }
if {[runto bar]} { test_at_bar }
if {[runto localscopes]} { test_at_localscopes }
if {[runto autovars]} { test_at_autovars }