1# Copyright (C) 2011-2017 Free Software Foundation, Inc.
2
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.
7#
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.
12#
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/>.
15
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
19# thread.
20
21standard_testfile
22set executable ${testfile}
23
24if [target_info exists gdb,nosignals] {
25    verbose "Skipping ${testfile}.exp because of nosignals."
26    return -1
27}
28
29if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" \
30	 executable [list debug "incdir=${objdir}"]] != "" } {
31    return -1
32}
33
34proc get_value {var test} {
35    global expect_out
36    global gdb_prompt
37    global decimal
38
39    set value -1
40    gdb_test_multiple "print $var" "$test" {
41	-re ".*= ($decimal).*\r\n$gdb_prompt $" {
42	    set value $expect_out(1,string)
43	    pass "$test"
44        }
45    }
46    return ${value}
47}
48
49# Start with a fresh gdb.
50
51clean_restart $executable
52
53if ![runto_main] {
54    return -1
55}
56
57gdb_breakpoint [gdb_get_line_number "set wait-thread-2 breakpoint here"]
58gdb_continue_to_breakpoint "run to wait-thread-2 breakpoint"
59gdb_test "info threads" "" "info threads with thread 2"
60
61gdb_breakpoint [gdb_get_line_number "set wait-thread-3 breakpoint here"]
62gdb_continue_to_breakpoint "run to breakpoint"
63gdb_test "info threads" "" "info threads with thread 3"
64
65gdb_test "set scheduler-locking on"
66
67gdb_breakpoint [gdb_get_line_number "set breakpoint child_two here"]
68gdb_breakpoint [gdb_get_line_number "set breakpoint child_one here"]
69
70gdb_test "thread 3" "" "switch to thread 3 to run to its breakpoint"
71gdb_continue_to_breakpoint "run to breakpoint in thread 3"
72
73gdb_test "thread 2" "" "switch to thread 2 to run to its breakpoint"
74gdb_continue_to_breakpoint "run to breakpoint in thread 2"
75
76delete_breakpoints
77
78gdb_test "b *\$pc" "" "set breakpoint to be stepped over"
79# Make sure the first loop breaks without hitting the breakpoint
80# again.
81gdb_test "p *myp = 0" " = 0" "force loop break in thread 2"
82
83# We want "print" to make sure the target reports the signal to the
84# core.
85gdb_test "handle SIGUSR1 print nostop pass" "" ""
86
87gdb_test "thread 1" "" "switch to thread 1 to queue signal in thread 2"
88gdb_test "next 2" "pthread_join .*" "queue signal in thread 2"
89
90gdb_test "thread 3" "" "switch to thread 3 for stepping"
91set my_number [get_value "my_number" "get my_number"]
92set cnt_before [get_value "args\[$my_number\]" "get count before step"]
93gdb_test "set scheduler-locking off"
94
95# Make sure we're exercising the paths we want to.
96gdb_test "set debug infrun 1"
97
98set test "step"
99gdb_test_sequence $test $test {
100    "need to step-over"
101    "resume \\(step=1"
102    "signal arrived while stepping over breakpoint"
103    "stepped to a different line"
104    "callme"
105}
106
107set cnt_after [get_value "args\[$my_number\]" "get count after step"]
108
109# Test that GDB doesn't inadvertently resume the stepped thread when a
110# signal arrives while stepping over a breakpoint in another thread.
111
112gdb_assert { $cnt_before + 1 == $cnt_after } "stepped thread under control"
113