gdb/testsuite/gdb.base/huge.exp

# Copyright 2001-2024 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/>.

# This file was written by Michael Snyder (msnyder@redhat.com)


# Define if you want to skip this test
# (could be very time-consuming on remote targets with slow connection).
#
require {!target_info exists gdb,skip_huge_test}

standard_testfile .c

set max [expr 2 * 1024 * 1024]
set min 16

set opts {}
lappend opts debug

set compilation_succeeded 0
for { set size $max } { $size >= $min } { set size [expr $size / 2] } {
    set try_opts [concat $opts [list additional_flags=-DCRASH_GDB=$size]]
    if { [build_executable $testfile.exp $testfile $srcfile $try_opts] == -1 } {
	continue
    }

    set compilation_succeeded 1
    break
}
require {expr $compilation_succeeded}

# Start with a fresh gdb.
clean_restart ${binfile}

save_vars { timeout } {
    set timeout 30

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

    gdb_test_no_output "set max-value-size unlimited"

    gdb_test_no_output "maint set per-command space on"

    set re1 \
	[list \
	     [string_to_regexp $] \
	     $decimal \
	     " = " \
	     [string_to_regexp "{0 <repeats "] \
	     $decimal \
	     [string_to_regexp " times>}"]]
    set re2 \
	[list \
	     "Space used: $decimal" \
	     [string_to_regexp " (+"] \
	     "($decimal) for this command" \
	     [string_to_regexp ")"]]
    set re [multi_line [join $re1 ""]  [join $re2 ""]]
    set space_used -1
    gdb_test_multiple "print a" "print a very large data object" {
	-re -wrap $re {
	    set space_used $expect_out(1,string)
	    pass $gdb_test_name
	}
    }

    set test "not too much space used"
    if { $space_used == -1 } {
	unsupported $test
    } else {
	# At 56 passes with and without the fix, so use 55.
	gdb_assert {$space_used < [expr 55 * 4 * $size] } $test
    }
}