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# Copyright 2010-2024 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/>.
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.
require dwarf2_support
# This test can only be run on x86 targets.
require is_x86_like_target
standard_testfile .S
set csrcfile ${testfile}.c
set opts {}
lappend opts nopie
if [info exists COMPILE] {
# make check RUNTESTFLAGS='gdb.dwarf2/implptr.exp COMPILE=1 CC_FOR_TARGET=gcc\ -m32'
set srcfile ${csrcfile}
lappend opts debug optimize=-O2
}
if {[prepare_for_testing "failed to prepare" ${testfile} $srcfile $opts]} {
return -1
}
# Additional test to verify the referenced CU is not aged out.
gdb_test_no_output "maintenance set dwarf max-cache-age 0"
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" " = \\(intp\\) <synthetic pointer>" "print j in implptr:bar"
gdb_test {print sizeof (j[0])} " = 4" {print sizeof (j[0]) 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 implicit pointer offset.
proc implptr_test_baz {} {
global csrcfile
set line [gdb_get_line_number "baz breakpoint" $csrcfile]
gdb_test "break implptr.c:$line" "Breakpoint 3.*" \
"set baz breakpoint for implptr"
gdb_continue_to_breakpoint "continue to baz breakpoint for implptr"
# We are breaking in an inlined function. GDB should appear to
# have stopped "in" the inlined function.
gdb_test "up" "#1 foo .*"
gdb_test {p p[0].y} " = 92" "sanity check element 0"
gdb_test {p p[1].y} " = 46" "sanity check element 1"
gdb_test "down" "#0 add .*"
gdb_test "p a->y" " = 92" "check element 0 for the offset"
gdb_test "p b->y" " = 46" "check element 1 for the offset"
gdb_continue_to_breakpoint "ignore the second baz breakpoint"
}
# 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 4.*" \
"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_baz
implptr_test_foo
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