b8b91e982e
The code in gdb.threads/staticthreads.exp about checking the value of tlsvar in main thread is racy, because when child thread hits breakpoint, the main thread may not go into pthread_join yet, and may not be unwind to main. This patch is to move the line setting breakpoint on after sem_wait, so that the child thread will hit breakpoint after main thread calls sem_post. IOW, when child thread hits breakpoint, the main thread is in either sem_post or pthread_join. "up 10" can unwind main thread to main. gdb/testsuite: 2014-06-06 Yao Qi <yao@codesourcery.com> * gdb.threads/staticthreads.c (thread_function): Move the line setting breakpoint on forward. * gdb.threads/staticthreads.exp: Update comments.
111 lines
2.7 KiB
Text
111 lines
2.7 KiB
Text
# static.exp -- test script, for GDB, the GNU debugger.
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# Copyright 2004-2014 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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# Based on manythreads written by Jeff Johnston, contributed by Red
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# Hat.
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standard_testfile
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set static_flag "-static"
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foreach have_tls { "-DHAVE_TLS" "" } {
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if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" \
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executable \
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[list debug "additional_flags=${static_flag} ${have_tls}" \
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]] == "" } {
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break
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}
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if { $have_tls == "" } {
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return -1
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}
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}
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clean_restart ${binfile}
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gdb_test_no_output "set print sevenbit-strings"
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# See if the static multi-threaded program runs.
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runto_main
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gdb_test "break sem_post"
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set test "Continue to main's call of sem_post"
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gdb_test_multiple "continue" "$test" {
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-re "Breakpoint .*, .*sem_post .*$gdb_prompt " {
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pass "$test"
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}
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-re "Program received signal .*$gdb_prompt " {
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kfail gdb/1328 "$test"
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}
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}
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# See if handle SIG32 helps (a little) with a static multi-threaded
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# program.
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set sig "SIG32"
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# SIGRTMIN is 37 on hppa-linux and hpux
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if [istarget hppa*-*-*] {
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set sig "SIG37"
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}
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rerun_to_main
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gdb_test "handle $sig nostop noprint pass"
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set test "Handle $sig helps"
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gdb_test "continue" " .*sem_post .*" "handle $sig helps"
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# See if info threads produces anything approaching a thread list.
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set test "info threads"
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gdb_test_multiple "info threads" "$test" {
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-re " Thread .*$gdb_prompt " {
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pass "$test"
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}
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-re "$gdb_prompt " {
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kfail gdb/1328 "$test"
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}
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}
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# Check that the program can be quit.
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set test "GDB exits with static thread program"
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gdb_test_multiple "quit" "$test" {
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-re "Quit anyway\\? \\(y or n\\) $" {
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send_gdb "y\n"
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exp_continue
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}
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eof {
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pass "$test"
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}
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}
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clean_restart ${binfile}
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if { "$have_tls" != "" } {
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if ![runto_main] {
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return -1
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}
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gdb_breakpoint [gdb_get_line_number "tlsvar-is-set"]
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gdb_continue_to_breakpoint "tlsvar-is-set" ".* tlsvar-is-set .*"
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gdb_test "p tlsvar" " = 2" "tlsvar in thread"
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gdb_test "thread 1" ".*"
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# Unwind to main.
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gdb_test "up 10" " in main .*"
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gdb_test "p tlsvar" " = 1" "tlsvar in main"
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}
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