gdb/testsuite/gdb.dwarf2/implptr.exp

# Copyright 2010, 2011 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/>.
load_lib dwarf.exp

# Test DW_OP_GNU_implicit_pointer.

# This test can only be run on targets which support DWARF-2 and use gas.
if {![dwarf2_support]} {
    return 0  
}
# This test can only be run on x86 targets.
if {![is_x86_like_target]} {
    return 0  
}

set testfile "implptr"
set srcfile ${testfile}.S
set csrcfile ${testfile}.c
set binfile ${objdir}/${subdir}/${testfile}.x

if {[prepare_for_testing ${testfile}.exp ${testfile}.x $srcfile]} {
    return -1
}

if ![runto_main] {
    return -1
}

# Test various pointer depths in bar.
proc implptr_test_bar {} {
    global csrcfile
    set line [gdb_get_line_number "bar breakpoint" $csrcfile]
    gdb_test "break implptr.c:$line" "Breakpoint 2.*" \
       "set bar breakpoint for implptr"
    gdb_continue_to_breakpoint "continue to bar breakpoint for implptr"
    gdb_test "print j" " = .int .. <synthetic pointer>" "print j in implptr:bar"
    gdb_test "print *j" " = 5" "print *j in implptr:bar"
    gdb_test "print **k" " = 5" "print **k in implptr:bar"
    gdb_test "print ***l" " = 5" "print ***l in implptr:bar"
}

# Test some values in foo.
proc implptr_test_foo {} {
    global csrcfile
    set line [gdb_get_line_number "foo breakpoint" $csrcfile]
    gdb_test "break implptr.c:$line" "Breakpoint 3.*" \
	"set foo breakpoint for implptr"
    gdb_continue_to_breakpoint "continue to foo breakpoint for implptr"
    gdb_test "print p\[0].x" " = .int .. <synthetic pointer>" \
	"print p\[0].x in implptr:foo"
    gdb_test "print *p\[0].x" " = 69" \
	"print *p\[0].x in implptr:foo"
    gdb_test "print/d *(((char *) p\[0].x) + 1)" " = 0" \
	"print byte inside *p\[0].x in implptr:foo"
    gdb_test "print *(p\[0].x + 10)" \
	"access outside bounds of object referenced via synthetic pointer" \
	"print invalid offset from *p\[0].x in implptr:foo"
    gdb_test "print j" " = 69" \
	"print j in implptr:foo"
}

implptr_test_bar
implptr_test_foo