gdb/testsuite/gdb.threads/del-pending-thread-bp.exp

# Copyright 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/>.

# This test checks that pending thread-specific breakpoints are
# correctly deleted when the thread the breakpoint is for goes out of
# scope.
#
# We also check that we can't create a pending thread-specific
# breakpoint for a non-existent thread.

require allow_shlib_tests

standard_testfile

set libname $testfile-lib
set srcfile_lib $srcdir/$subdir/$libname.c
set binfile_lib [standard_output_file $libname.so]

if { [gdb_compile_shlib $srcfile_lib $binfile_lib {}] != "" } {
    untested "failed to compile shared library 1"
    return -1
}

set binfile_lib_target [gdb_download_shlib $binfile_lib]

if { [prepare_for_testing "failed to prepare" $testfile $srcfile \
	  [list debug \
	       additional_flags=-DSHLIB_NAME=\"$binfile_lib_target\" \
	       shlib_load pthreads]] } {
    return -1
}

gdb_locate_shlib $binfile_lib

if ![runto_main] {
    return 0
}

# Run until we have two threads.
gdb_breakpoint "breakpt"
gdb_continue_to_breakpoint "first breakpt call"

# Confirm that we have a thread '2'.
gdb_test "info threads" "\r\n\\s+2\\s+\[^\r\n\]+"

# Create a pending, thread-specific, breakpoint on 'foo'.
gdb_breakpoint "foo thread 2" allow-pending
set bpnum [get_integer_valueof "\$bpnum" "*INVALID*" \
	       "get breakpoint number"]

# Check we can't create a pending thread-specific breakpoint for a
# non-existent thread.
gdb_test "with breakpoint pending on -- break foo thread 99" \
    "Unknown thread 99\\."

# Continue to 'breakpt' again.  Don't use gdb_continue_to_breakpoint
# as we are looking for the thread exited and breakpoint deleted
# messages.
gdb_test "continue" \
    [multi_line \
	 "Continuing\\." \
	 "\\\[Thread \[^\r\n\]+ exited\\\]" \
	 "Thread-specific breakpoint $bpnum deleted - thread 2 no longer in the thread list\\." \
	 "" \
	 "Thread 1 \[^\r\n\]+, breakpt \\(\\) at \[^\r\n\]+" \
	 "$decimal\\s+\[^\r\n\]+"] \
    "second breakpt call"

# Confirm breakpoint has been deleted.
gdb_test "info breakpoints $bpnum" \
    "No breakpoint, watchpoint, tracepoint, or catchpoint matching '$bpnum'\\."

# Continue again.  This will pass through 'foo'.  We should not stop
# in 'foo', the breakpoint has been deleted.  We should next stop in
# breakpt again.
gdb_test "continue" \
    [multi_line \
	 "Continuing\\." \
	 "" \
	 "Thread 1 \[^\r\n\]+ hit Breakpoint $decimal, breakpt \\(\\) at \[^\r\n\]+" \
	 "$decimal\\s+\[^\r\n\]+"] \
    "third breakpt call"
gdb_test "bt 1" \
    [multi_line \
	 "#0\\s+breakpt \\(\\) at \[^\r\n\]+" \
	 "\\(More stack frames follow\\.\\.\\.\\)"]