gdb/testsuite/gdb.threads/infcall-from-bp-cond-single.exp

# Copyright 2022-2025 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 reprocuces bug gdb/28942, performing an inferior function
# call from a breakpoint condition in a multi-threaded inferior.
#
# The important part of this test is that, when the conditional
# breakpoint is hit, and the condition (which includes an inferior
# function call) is evaluated, the other threads are running.

standard_testfile

if { [build_executable "failed to prepare" ${binfile} "${srcfile}" \
	  {debug pthreads}] == -1 } {
    return
}

set cond_bp_line [gdb_get_line_number "Conditional breakpoint here"]
set final_bp_line [gdb_get_line_number "Stop marker"]

# Start GDB based on TARGET_ASYNC and TARGET_NON_STOP, and then runto main.
proc start_gdb_and_runto_main { target_async target_non_stop } {
    save_vars { ::GDBFLAGS } {
	append ::GDBFLAGS \
	    " -ex \"maint set target-non-stop $target_non_stop\""
	append ::GDBFLAGS \
	    " -ex \"maintenance set target-async ${target_async}\""

	clean_restart ${::testfile}
    }

    if { ![runto_main] } {
	return -1
    }

    return 0
}

# Run a test of GDB's conditional breakpoints, where the conditions include
# inferior function calls.
#
# TARGET_ASYNC and TARGET_NON_STOP are used when starting up GDB.
#
# When STOP_AT_COND is true the breakpoint condtion will evaluate to
# true, and GDB will stop at the breakpoint.  Otherwise, the
# breakpoint condition will evaluate to false and GDB will not stop at
# the breakpoint.
proc run_condition_test { stop_at_cond \
			      target_async target_non_stop } {
    if { [start_gdb_and_runto_main $target_async \
	      $target_non_stop] == -1 } {
	return
    }

    # Setup the conditional breakpoint.
    if { $stop_at_cond } {
	set cond_func "return_true"
    } else {
	set cond_func "return_false"
    }
    gdb_breakpoint \
	"${::srcfile}:${::cond_bp_line} if (${cond_func} ())"
    set cond_bp_num [get_integer_valueof "\$bpnum" "*UNKNOWN*" \
			"get number for conditional breakpoint"]

    # And a breakpoint that we hit when the test is over, this one is
    # not conditional.
    gdb_breakpoint "${::srcfile}:${::final_bp_line}"
    set final_bp_num [get_integer_valueof "\$bpnum" "*UNKNOWN*" \
			  "get number for final breakpoint"]

    if { $stop_at_cond } {
	# Continue.  The first breakpoint we hit should be the conditional
	# breakpoint.  The other thread will have hit its breakpoint, but
	# that will have been deferred until the conditional breakpoint is
	# reported.
	gdb_test "continue" \
	    [multi_line \
		 "Continuing\\." \
		 ".*" \
		 "" \
		 "Thread ${::decimal} \"\[^\"\r\n\]+\" hit Breakpoint ${cond_bp_num}, worker_func \[^\r\n\]+:${::cond_bp_line}" \
		 "${::decimal}\\s+\[^\r\n\]+Conditional breakpoint here\[^\r\n\]+"] \
	    "hit the conditional breakpoint"
    }

    # Run to the stop marker.
    gdb_test "continue" \
	[multi_line \
	     "Continuing\\." \
	     ".*" \
	     "" \
	     "Thread ${::decimal} \"\[^\"\r\n\]+\" hit Breakpoint ${final_bp_num}, stop_marker \[^\r\n\]+:${::final_bp_line}" \
	     "${::decimal}\\s+\[^\r\n\]+Stop marker\[^\r\n\]+"] \
	"hit the final breakpoint"
}

foreach_with_prefix target_async { "on" "off" } {
    foreach_with_prefix target_non_stop { "on" "off" } {
	foreach_with_prefix stop_at_cond { true false } {
	    run_condition_test $stop_at_cond \
		$target_async $target_non_stop
	}
    }
}