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# Copyright 2014-2022 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 that GDB isn't silent if it fails to remove a breakpoint from
# the main program, independently of whether the program was loaded
# with "file PROGRAM" or directly from the command line with "gdb
# PROGRAM".
standard_testfile
if {[build_executable "failed to prepare" $testfile $srcfile debug]} {
return -1
}
# Run the test proper. INITIAL_LOAD determines whether the program is
# initially loaded by the "file" command or by passing it to GDB on
# the command line.
proc test_remove_bp { initial_load } {
with_test_prefix "$initial_load" {
global srcdir subdir binfile
global gdb_prompt hex
global GDBFLAGS
gdb_exit
set saved_gdbflags $GDBFLAGS
# See "used to behave differently" further below.
if { $initial_load == "file" } {
gdb_start
gdb_file_cmd $binfile
} else {
global last_loaded_file
# gdb_file_cmd sets this. This is what gdb_reload
# implementations use as binary.
set last_loaded_file $binfile
set GDBFLAGS "$GDBFLAGS $binfile"
gdb_start
}
gdb_reinitialize_dir $srcdir/$subdir
gdb_reload
set GDBFLAGS $saved_gdbflags
if ![runto start] {
return
}
delete_breakpoints
# So we can easily control when are breakpoints removed.
gdb_test_no_output "set breakpoint always-inserted on"
set bp_addr ""
set test "break foo"
gdb_test_multiple $test $test {
-re "Breakpoint .* at ($hex).*$gdb_prompt $" {
set bp_addr $expect_out(1,string)
pass $test
}
}
if {$bp_addr == ""} {
unsupported "can't extract foo's address"
return
}
gdb_test "info break" "y.*$hex.*in foo at.*" \
"breakpoint is set"
# Now unmap the page where the breakpoint is set. Trying to
# remove the memory breakpoint afterwards should fail, and GDB
# should warn the user about it.
set pagesize [get_integer_valueof "pg_size" 0]
set align_addr [expr $bp_addr - $bp_addr % $pagesize]
set munmap_prototype "int (*) (void *, size_t)"
set munmap_expr "(($munmap_prototype) munmap) ($align_addr, $pagesize)"
set munmap [get_integer_valueof $munmap_expr -1]
if {$munmap != 0} {
unsupported "can't munmap foo's page"
return
}
gdb_test "delete \$bpnum" \
"warning: Error removing breakpoint .*" \
"failure to remove breakpoint warns"
}
}
foreach initial_load { "cmdline" "file" } {
test_remove_bp $initial_load
}
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