# Copyright 2023-2024 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 DAP 'bt' through a function without debuginfo.

require allow_dap_tests

load_lib dap-support.exp

standard_testfile bt-main.c bt-inner.c

if {[build_executable_from_specs $testfile.exp $testfile {} \
	 $srcfile debug \
	 $srcfile2 {}] == -1} {
    return
}

if {[dap_initialize] == ""} {
    return
}

set launch_id [dap_launch $testfile]

set obj [dap_check_request_and_response "set breakpoint on inner" \
	     setFunctionBreakpoints \
	     {o breakpoints [a [o name [s function_breakpoint_here]]]}]
set fn_bpno [dap_get_breakpoint_number $obj]

dap_check_request_and_response "configurationDone" configurationDone

dap_check_response "launch response" launch $launch_id

dap_wait_for_event_and_check "inferior started" thread "body reason" started

lassign [dap_wait_for_event_and_check "stopped at function breakpoint" stopped \
	    "body reason" breakpoint \
	    "body hitBreakpointIds" $fn_bpno] unused objs

# The bug was that this request would fail.
set obj [dap_check_request_and_response "backtrace" \
	     stackTrace {o threadId [i 1]}]
set frames [dict get [lindex $obj 0] body stackFrames]

gdb_assert {[llength $frames] == 3} "three frames"

gdb_assert {[dict get [lindex $frames 1] name] == "no_debug_info"} \
    "name of no-debug frame"

# Breakpoint can be set without source file information
set obj [dap_check_request_and_response "set breakpoint on no_debug_info" \
	    setFunctionBreakpoints \
	    {o breakpoints [a [o name [s no_debug_info]]]}]
set breakpoints [dict get [lindex $obj 0] body breakpoints]
gdb_assert {[dict exists [lindex $breakpoints 0] instructionReference]} \
    "breakpoint has instructionReference"

# instructionReference is specified as a string, but it's form is not
# otherwise given in the spec.  gdb always emits it as hex.  A bug
# slipped in that caused this to be incorrect, so we test both parts
# here; to test whether a string was given, we have to reach into the
# TON form.
set list_form [namespace eval ton::2list $last_ton]
set ref [namespace eval ton::2list {
    get $list_form body breakpoints 0 instructionReference
}]
gdb_assert {[regexp "^$hex\$" $ref]} \
    "instructionReference is a hex string"

dap_shutdown