85 lines
2.5 KiB
Plaintext
85 lines
2.5 KiB
Plaintext
# Copyright 2017-2018 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 is part of the gdb testsuite.
|
|
|
|
# Test that GDB tolerates being started with libSegFault.so preloaded
|
|
# with LD_PRELOAD, and that GDB warns about a custom SIGSEGV custom
|
|
# handler. See PR gdb/18653
|
|
# <https://sourceware.org/bugzilla/show_bug.cgi?id=18653#c7>.
|
|
|
|
# We cannot expect remote hosts to see environment variables set on
|
|
# the local machine.
|
|
if { [is_remote host] } {
|
|
unsupported "can't set environment variables on remote host"
|
|
return -1
|
|
}
|
|
|
|
# Spawn GDB with LIB preloaded with LD_PRELOAD. CMDLINE_OPTS are
|
|
# command line options passed to GDB.
|
|
|
|
proc gdb_spawn_with_ld_preload {lib cmdline_opts} {
|
|
global env
|
|
|
|
save_vars { env(LD_PRELOAD) } {
|
|
if { ![info exists env(LD_PRELOAD) ]
|
|
|| $env(LD_PRELOAD) == "" } {
|
|
set env(LD_PRELOAD) "$lib"
|
|
} else {
|
|
append env(LD_PRELOAD) ":$lib"
|
|
}
|
|
|
|
gdb_spawn_with_cmdline_opts $cmdline_opts
|
|
}
|
|
}
|
|
|
|
proc test_libsegfault {} {
|
|
global gdb_prompt
|
|
|
|
set libsegfault "libSegFault.so"
|
|
|
|
# When started normally, if libSegFault.so is preloaded, GDB
|
|
# should warn about not being able to propagate the signal
|
|
# disposition of SIGSEGV.
|
|
gdb_exit
|
|
gdb_spawn_with_ld_preload $libsegfault ""
|
|
|
|
set test "gdb emits custom handler warning"
|
|
gdb_test_multiple "" $test {
|
|
-re "cannot be preloaded.*\r\n$gdb_prompt $" {
|
|
# Glibc 2.22 outputs:
|
|
# ERROR: ld.so: object 'libSegFault.so' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
|
|
untested "cannot preload libSegFault.so"
|
|
return
|
|
}
|
|
-re "Found custom handler.*won't be propagated.*\r\n$gdb_prompt $" {
|
|
pass $test
|
|
}
|
|
}
|
|
|
|
# "-q" should disable the warning, though.
|
|
gdb_exit
|
|
gdb_spawn_with_ld_preload $libsegfault "-q"
|
|
|
|
set test "quiet suppresses custom handler warning"
|
|
gdb_test_multiple "" $test {
|
|
-re "^$gdb_prompt $" {
|
|
pass $test
|
|
}
|
|
}
|
|
}
|
|
|
|
test_libsegfault
|