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# Copyright 2012-2021 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/>.
# Test that on Linux, we don't warn about not finding the vDSO. E.g.:
#
# warning: Could not load shared library symbols for linux-vdso.so.1.
standard_testfile
if { [prepare_for_testing "failed to prepare" ${testfile} $srcfile] } {
return -1
}
with_test_prefix "setup" {
gdb_breakpoint "main"
# At least some versions of Fedora/RHEL glibc have local patches that
# hide the vDSO. This lines re-exposes it. See PR libc/13097,
# comment 2. There's no support for passing environment variables in
# the remote protocol, but that's OK -- if we're testing against a
# glibc that doesn't list the vDSO without this, the test should still
# pass.
gdb_test_no_output "set environment LD_DEBUG=unused"
}
proc test_no_vdso {command} {
global srcfile
global gdb_prompt
set message "startup"
gdb_test_multiple "$command" $message {
-re "Could not load shared library symbols .*\r\n$gdb_prompt $" {
fail $message
}
-re "main \\(\\) at .*$srcfile.*\r\n$gdb_prompt $" {
pass $message
}
}
# Extra testing in case the warning changes and we miss updating
# the above.
set test "no vdso without symbols is listed"
gdb_test_multiple "info shared" $test {
-re "No\[^\r\n\]+linux-(vdso|gate).*$gdb_prompt $" {
fail $test
}
-re "$gdb_prompt $" {
pass $test
}
}
}
# First, try a live process.
with_test_prefix "run" {
gdb_run_cmd
test_no_vdso ""
}
# Now, dump a core, and reload it.
with_test_prefix "core" {
set corefile [standard_output_file $testfile.core]
set core_supported [gdb_gcore_cmd "$corefile" "save a corefile"]
if {!$core_supported} {
return -1
}
clean_restart ${testfile}
test_no_vdso "core-file $corefile"
}
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