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# Copyright 2007-2022 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/>.
#
# Test that varobj are invalidated after the shlib they point to goes
# away.
load_lib mi-support.exp
set MIFLAGS "-i=mi"
if { [skip_shlib_tests] } {
return 0
}
standard_testfile .c -lib.c
set shlib_path [standard_output_file ${testfile}-lib.so]
if { [gdb_compile_shlib $srcdir/$subdir/$srcfile2 $shlib_path {debug}] != "" } {
untested "failed to compile"
return -1
}
set opts [list shlib_load debug additional_flags=-DSHLIB_PATH="${shlib_path}"]
if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable $opts] != "" } {
untested "failed to compile"
return -1
}
proc do_test { separate_debuginfo } {
if { [mi_clean_restart] } {
unsupported "failed to start GDB"
return
}
# Start the process once and create varobjs referencing the loaded objfiles.
with_test_prefix "setup" {
mi_load_shlibs $::shlib_path
if { $separate_debuginfo } {
mi_load_shlibs ${::shlib_path}.debug
}
mi_delete_breakpoints
mi_gdb_reinitialize_dir $::srcdir/$::subdir
mi_gdb_load $::binfile
mi_runto foo -pending
mi_create_varobj global_var global_var "create global global_var"
mi_create_varobj global_shlib_var global_shlib_var "create global gloal_shlib_var"
mi_create_floating_varobj floating_local local_var "create floating local_var"
# Advance to a point where the shlib's objfile have been deleted.
mi_continue_to "no_varobj_in_scope"
}
with_test_prefix "after objfile deleted" {
# The global shlib var was invalidated when the objfile got unloaded.
mi_gdb_test "-var-update global_shlib_var" \
"\\^done,changelist=\\\[\{name=\"global_shlib_var\",in_scope=\"invalid\",has_more=\"0\"\}\]" \
"global_shlib_var invalidated"
# The floating var is still valid but not in scope.
mi_gdb_test "-var-update floating_local" \
"\\^done,changelist=\\\[{name=\"floating_local\",in_scope=\"false\",type_changed=\"false\",has_more=\"0\"}\\\]" \
"floating_local still valid but not in scope"
mi_gdb_test "-var-update global_var" \
"\\^done,changelist=\\\[\\\]" \
"global_var still valid"
# The varobj can be re-evaluated if the expression is valid in the current
# frame.
mi_continue_to "floating_varobj_in_scope"
mi_gdb_test "-var-update floating_local" \
"\\^done,changelist=\\\[{name=\"floating_local\",in_scope=\"true\",type_changed=\"true\",new_type=\"int\",new_num_children=\"0\",has_more=\"0\"}\\\]" \
"floating_local in scope with new type and value"
}
# Reload the entire process
with_test_prefix "restart process" {
mi_delete_breakpoints
mi_gdb_load ${::binfile}
mi_runto_main
}
with_test_prefix "in new process" {
# When reloading the symbol file, only the var for the global in the main
# executable is re-created.
mi_gdb_test "-var-update global_var" \
"\\^done,changelist=\\\[\\\]" \
"global_var recreated"
mi_gdb_test "-var-update global_shlib_var" \
"\\^done,changelist=\\\[{name=\"global_shlib_var\",in_scope=\"invalid\",has_more=\"0\"}\\\]" \
"global_shlib_var invalid"
# Floating varobj should still be valid, but out of scope at the moment.
mi_gdb_test "-var-update floating_local" \
"\\^done,changelist=\\\[{name=\"floating_local\",in_scope=\"false\",type_changed=\"false\",has_more=\"0\"}\\\]" \
"floating_local still valid but not in scope"
# Continue inside foo
mi_gdb_test "299-break-insert -f -t foo" \
"&\"Function \\\\\"foo\\\\\" not defined.\\\\n\"\r\n299\\^done,[mi_make_breakpoint_pending -type breakpoint -disp del -pending foo]"
mi_send_resuming_command "exec-continue" "continue to foo"
mi_expect_stop "breakpoint-hit" foo ".*" ".*" "\[0-9\]+" { "" "disp=\"del\"" } "arrived at foo"
# Floating varobj is still valid, and now in scope.
mi_gdb_test "-var-update floating_local" \
"\\^done,changelist=\\\[{name=\"floating_local\",in_scope=\"true\",type_changed=\"true\",new_type=\"struct bar\",new_num_children=\"2\",has_more=\"0\"}\\\]" \
"floating_local still valid and in scope"
# The var for the global in the shlib stays invalid even after reloading the shlib.
mi_gdb_test "-var-update global_shlib_var" \
"\\^done,changelist=\\\[{name=\"global_shlib_var\",in_scope=\"invalid\",has_more=\"0\"}\\\]" \
"global_shlib_var invalid after shlib loaded"
}
}
proc_with_prefix local_not_invalidated { separate_debuginfo } {
if { [mi_clean_restart] } {
unsupported "failed to start GDB"
return
}
# Start the process once and create varobjs referencing the loaded objfiles.
with_test_prefix "setup" {
mi_load_shlibs $::shlib_path
if { $separate_debuginfo } {
mi_load_shlibs ${::shlib_path}.debug
}
mi_gdb_reinitialize_dir $::srcdir/$::subdir
mi_gdb_load $::binfile
mi_runto foo -pending
mi_next "next"
mi_create_varobj local_var local_var "create local varobj"
}
# At this point we are stopped in the shared library. If we reload symbols
# for the main binary, symbols for the shared library remain valid. A
# varobj tracking variables in the scope of the shared library only should
# not be invalidated.
mi_gdb_load ${::binfile}
mi_gdb_test "-var-update local_var" \
"\\^done,changelist=\\\[\\\]" \
"local_var preserved"
}
foreach_with_prefix separate_debuginfo {0 1} {
if { $separate_debuginfo } {
gdb_gnu_strip_debug $::shlib_path
}
do_test $separate_debuginfo
local_not_invalidated $separate_debuginfo
}
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