gdb/testsuite/gdb.btrace/event-tracing-gap.exp

# This testcase is part of GDB, the GNU debugger.
#
# Copyright 2024-2025 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/>.

# Test event tracing with gaps.

require allow_btrace_pt_event_trace_tests

standard_testfile

if {[prepare_for_testing "failed to prepare" $testfile $srcfile]} {
    return -1
}

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

gdb_test_no_output "set record btrace pt event-tracing on"
gdb_test_no_output "record btrace pt"

set bp_1 [gdb_get_line_number "bp1"]
set bp_2 [gdb_get_line_number "bp2"]
gdb_breakpoint $bp_1
gdb_breakpoint $bp_2

gdb_test "next"

# Inferior calls and return commands will create gaps in the recording.
gdb_test "call square (3)" [multi_line \
    "" \
    "Breakpoint $decimal, square \\(num=3\\) at \[^\r\n\]+:$bp_1" \
    "$decimal.*bp1.*" \
    "The program being debugged stopped while in a function called from GDB\\." \
    "Evaluation of the expression containing the function" \
    "\\(square\\) will be abandoned\\." \
    "When the function is done executing, GDB will silently stop\\."]

gdb_test "return 9" "0.*main.*" \
    "return" \
    "Make.*return now\\? \\(y or n\\) " "y"

gdb_continue_to_breakpoint "break at bp_1" ".*$srcfile:$bp_1.*"
gdb_continue_to_breakpoint "break at bp_2" ".*$srcfile:$bp_2.*"

# We should have 2 gaps and events for each breakpoint we hit.
# Note that due to the asynchronous nature of certain events, we use
# gdb_test_sequence and check only for events that we can control.
gdb_test_sequence "record function-call-history" "function-call-history" {
    "\[0-9\]+\tmain"
    "\\\[iret(: ip = $hex)?\\\]"
    "\[0-9\]+\t\\\[non-contiguous\\\]"
    "\[0-9\]+\tsquare"
    "\\\[interrupt: vector = 0x3 \\\(#bp\\\)(, ip = 0x\[0-9a-fA-F\]+)?\\\]"
    "\\\[iret(: ip = $hex)?\\\]"
    "\[0-9\]+\t\\\[non-contiguous\\\]"
    "\[0-9\]+\tmain"
    "\[0-9\]+\tsquare"
    "\\\[interrupt: vector = 0x3 \\\(#bp\\\)(, ip = 0x\[0-9a-fA-F\]+)?\\\]"
    "\\\[iret(: ip = $hex)?\\\]"
    "\[0-9\]+\tmain"
}