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"""Test GDB's follow-fork-mode child.
SPDX-License-Identifier: GPL-2.0-or-later
"""
from test_gdbstub import main, report
def run_test():
"""Run through the tests one by one"""
gdb.execute("set follow-fork-mode child")
# Check that the parent breakpoints are unset.
gdb.execute("break break_after_fork")
# Check that the parent syscall catchpoints are unset.
# Skip this check on the architectures that don't have them.
have_fork_syscall = False
for fork_syscall in ("fork", "clone", "clone2", "clone3"):
try:
gdb.execute("catch syscall {}".format(fork_syscall))
except gdb.error:
pass
else:
have_fork_syscall = True
gdb.execute("continue")
for i in range(42):
if have_fork_syscall:
# syscall entry.
if i % 2 == 0:
# Check that the parent single-stepping is turned off.
gdb.execute("si")
else:
gdb.execute("continue")
# syscall exit.
gdb.execute("continue")
# break_after_fork()
gdb.execute("continue")
exitcode = int(gdb.parse_and_eval("$_exitcode"))
report(exitcode == 42, "{} == 42".format(exitcode))
main(run_test)
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