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https://sourceware.org/git/binutils-gdb.git
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136 lines
3.6 KiB
Plaintext
136 lines
3.6 KiB
Plaintext
# Copyright (C) 2015-2020 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# This test spawns a few threads that constantly trip on a breakpoint
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# that does not cause a user-visible stop. While one of those
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# breakpoints is being handled, the main thread exits the whole
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# process. The result is that the current thread for which GDB is
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# handling the event disappears too and any attempt to access
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# register/memory now errors out. GDB and GDBserver should be able to
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# handle this scenario gracefully.
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#
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# See https://sourceware.org/bugzilla/show_bug.cgi?id=18749
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standard_testfile
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set linenum [gdb_get_line_number "set break here"]
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if {[build_executable "failed to prepare" $testfile $srcfile {debug pthreads}] == -1} {
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return -1
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}
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# The test proper. If COND_BP_TARGET is true, then test with
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# conditional breakpoints evaluated on the target side, if possible.
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proc do_test { non_stop cond_bp_target } {
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global GDBFLAGS
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global gdb_prompt
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global binfile
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global linenum
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set saved_gdbflags $GDBFLAGS
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set GDBFLAGS [concat $GDBFLAGS " -ex \"set non-stop $non_stop\""]
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clean_restart $binfile
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set GDBFLAGS $saved_gdbflags
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if ![runto_main] then {
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fail "can't run to main"
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return 0
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}
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# Whether it's known that the test fails.
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set should_kfail 0
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if {![gdb_is_target_remote]} {
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set should_kfail 1
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} else {
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if {!$cond_bp_target} {
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# Leaving breakpoint evaluation to GDB exposes failures
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# similar to native debugging.
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gdb_test_no_output "set remote conditional-breakpoints-packet off"
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set should_kfail 1
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} else {
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set test "show remote conditional-breakpoints-packet"
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gdb_test_multiple $test $test {
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-re "currently enabled\.\r\n$gdb_prompt $" {
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pass $test
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}
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-re "currently disabled\.\r\n$gdb_prompt $" {
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unsupported "no support for target-side conditional breakpoints"
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return
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}
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}
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set should_kfail 1
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}
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}
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gdb_test "break $linenum if zero == 1" \
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"Breakpoint .*" \
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"set breakpoint that evals false"
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set test "continue &"
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gdb_test_multiple $test $test {
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-re "$gdb_prompt " {
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pass $test
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}
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}
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set ok 0
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# Setup the kfail upfront in order to also catch GDB internal
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# errors.
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if {$should_kfail} {
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setup_kfail "gdb/18749" "*-*-*"
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}
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set test "inferior 1 exited"
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gdb_test_multiple "" $test {
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-re "Inferior 1 \(\[^\r\n\]+\) exited normally" {
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set ok 1
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# Clear the kfail to avoid a PASS -> KPASS dance across
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# runs.
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clear_kfail "*-*-linux*"
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pass $test
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}
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-re "$gdb_prompt " {
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# Several errors end up at the top level, and printing the
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# prompt.
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fail "$test (prompt)"
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}
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-re "Cannot access memory" {
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fail "$test (memory error)"
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}
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eof {
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fail "$test (GDB died)"
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}
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}
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if {!$ok} {
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# No use testing further.
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return
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}
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gdb_test "info threads" "No threads\." \
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"no threads left"
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}
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foreach_with_prefix non_stop {"on" "off"} {
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foreach_with_prefix cond_bp_target {1 0} {
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do_test $non_stop $cond_bp_target
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}
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}
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