1 # Copyright (C) 2011-2015 Free Software Foundation, Inc.
3 # This program is free software; you can redistribute it and/or modify
4 # it under the terms of the GNU General Public License as published by
5 # the Free Software Foundation; either version 3 of the License, or
6 # (at your option) any later version.
8 # This program is distributed in the hope that it will be useful,
9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 # GNU General Public License for more details.
13 # You should have received a copy of the GNU General Public License
14 # along with this program. If not, see <http://www.gnu.org/licenses/>.
16 # Test that GDB doesn't inadvertently resume the stepped thread when a
17 # signal arrives while stepping over the breakpoint that last caused a
18 # stop, when the thread that hit that breakpoint is not the stepped
22 set executable ${testfile}
24 if [target_info exists gdb,nosignals] {
25 verbose "Skipping ${testfile}.exp because of nosignals."
29 if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" \
30 executable [list debug "incdir=${objdir}"]] != "" } {
34 proc get_value {var test} {
40 gdb_test_multiple "print $var" "$test" {
41 -re ".*= ($decimal).*\r\n$gdb_prompt $" {
42 set value $expect_out(1,string)
49 # Start with a fresh gdb.
51 clean_restart $executable
57 gdb_breakpoint [gdb_get_line_number "set wait-thread-2 breakpoint here"]
58 gdb_continue_to_breakpoint "run to wait-thread-2 breakpoint"
59 gdb_test "info threads" "" "info threads with thread 2"
61 gdb_breakpoint [gdb_get_line_number "set wait-thread-3 breakpoint here"]
62 gdb_continue_to_breakpoint "run to breakpoint"
63 gdb_test "info threads" "" "info threads with thread 3"
65 gdb_test "set scheduler-locking on"
67 gdb_breakpoint [gdb_get_line_number "set breakpoint child_two here"]
68 gdb_breakpoint [gdb_get_line_number "set breakpoint child_one here"]
70 gdb_test "thread 3" "" "switch to thread 3 to run to its breakpoint"
71 gdb_continue_to_breakpoint "run to breakpoint in thread 3"
73 gdb_test "thread 2" "" "switch to thread 2 to run to its breakpoint"
74 gdb_continue_to_breakpoint "run to breakpoint in thread 2"
78 gdb_test "b *\$pc" "" "set breakpoint to be stepped over"
79 # Make sure the first loop breaks without hitting the breakpoint
81 gdb_test "p *myp = 0" " = 0" "force loop break in thread 2"
83 # We want "print" to make sure the target reports the signal to the
85 gdb_test "handle SIGUSR1 print nostop pass" "" ""
87 gdb_test "thread 1" "" "switch to thread 1 to queue signal in thread 2"
88 gdb_test "next 2" "pthread_join .*" "queue signal in thread 2"
90 gdb_test "thread 3" "" "switch to thread 3 for stepping"
91 set my_number [get_value "my_number" "get my_number"]
92 set cnt_before [get_value "args\[$my_number\]" "get count before step"]
93 gdb_test "set scheduler-locking off"
95 # Make sure we're exercising the paths we want to.
96 gdb_test "set debug infrun 1"
99 gdb_test_sequence $test $test {
102 "signal arrived while stepping over breakpoint"
103 "switching back to stepped thread"
104 "stepped to a different line"
108 set cnt_after [get_value "args\[$my_number\]" "get count after step"]
110 # Test that GDB doesn't inadvertently resume the stepped thread when a
111 # signal arrives while stepping over a breakpoint in another thread.
113 gdb_assert { $cnt_before + 1 == $cnt_after } "stepped thread under control"