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# Copyright 2021-2023 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/>.
# Test running into vfork while "detach-on-fork" is off and "follow-fork-mode"
# is parent. This shows a "Can not resume the parent process..." message. If
# the user wants to resume execution, they have to use either "set
# schedule-multiple on" or "set detach-on-fork on". Test these two resolution
# methods.
standard_testfile
if { [build_executable "failed to prepare" \
${testfile} ${srcfile}] } {
return
}
# Test running to the "Can not resume the parent..." message. Then, resolve
# the situation using the method in RESOLUTION_METHOD, either "detach-on-fork"
# or "schedule-multiple" (the two alternatives the message suggests to the
# user).
proc do_test { resolution_method } {
clean_restart $::binfile
gdb_test_no_output "set detach-on-fork off"
if { ![runto_main] } {
return
}
gdb_test "break break_parent"
gdb_test "continue" \
"Can not resume the parent process over vfork .*" \
"continue to vfork"
# Try to continue again from there, expecting the same message. It
# exercises a different code path in GDB.
gdb_test "continue" \
"Can not resume the parent process over vfork .*" \
"try to continue from vfork"
# Unblock the execution using the specified resolution method.
if { $resolution_method == "detach-on-fork" } {
# Make GDB detach the child.
gdb_test "set detach-on-fork on"
gdb_test "print unblock_parent = 1" " = 1"
} elseif { $resolution_method == "schedule-multiple" } {
# Make GDB resume both inferiors. The parent is blocked while the
# children executes, so the continue will make the child reach the
# end.
gdb_test "set schedule-multiple on"
gdb_test "continue" "$::inferior_exited_re normally.*" \
"continue to end of inferior 2"
gdb_test "inferior 1" ".*Switching to inferior 1.*"
gdb_test "print unblock_parent = 1" " = 1"
} else {
error "invalid resolution method: $resolution_method"
}
# Continue from the vfork call to the breakpoint.
gdb_test "continue" "Breakpoint $::decimal, break_parent .*" \
"continue to break_parent"
}
foreach_with_prefix resolution_method {detach-on-fork schedule-multiple} {
do_test $resolution_method
}
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