gdb/testsuite/gdb.base/corefile3.exp

# Copyright 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/>.

# Create a core file with some mapped file regions, but ensure that
# the the kernel should write the regions into the core file (e.g. r/w
# file backed mapping).
#
# We then delete the file that backed the mapping and load the core
# file into GDB.
#
# GDB shouldn't warn about the file being missing.  It doesn't matter;
# the file contents can all be found in the core file itself.

require isnative
require {!is_remote host}

standard_testfile

if {[build_executable $testfile.exp $testfile $srcfile] == -1} {
    return
}

set corefile [core_find $binfile {}]
if {$corefile == ""} {
    return
}

# Move the coremap.data file out of the way, so it cannot be found
# when we later load the core file into GDB.  This file was generated
# by the inferior as it was running.
set data_filename \
    [standard_output_file coredir.[getpid]/coremmap.data]
set backup_filename \
    [standard_output_file coredir.[getpid]/coremmap.data.backup]
remote_exec host "mv ${data_filename} ${backup_filename}"

clean_restart $binfile

# Load the core file.  The 'coremap.data' file cannot be found by GDB,
# but all the mappings for that file are r/w and should be present in
# the core file, so we shouldn't get any warnings from GDB about it.
set warnings_seen 0
gdb_test_multiple "core-file $corefile" "core-file command" {
    -re "^warning: Can't open file \[^\r\n\]+ during file-backed mapping note processing\r\n" {
	incr warnings_seen
	exp_continue
    }
    -re "^$gdb_prompt $" {
	gdb_assert { $warnings_seen == 0 } $gdb_test_name
    }
    -re "^\[^\r\n\]*\r\n" {
	exp_continue
    }
}

# Check the mappings are all readable.
foreach label { rw_mapping malloc_buffer anon_mapping shm_mapping } {
    gdb_test "x/1wd $label" "^$hex:\\s+$decimal"
}