# Copyright 2007-2021 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 essential Machine interface (MI) operations
#
# Verify that once binary file has changed, GDB correctly handles
# previously defined MI variables.
#


load_lib mi-support.exp
set MIFLAGS "-i=mi"

gdb_exit
if [mi_gdb_start] {
    continue
}

standard_testfile var-cmd.c

if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
    untested "failed to compile"
    return -1
}
# Just change the output binary.
set binfile_bis [standard_output_file mi-var-invalidate_bis]
if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile_bis}" executable {debug}] != "" } {
    untested "failed to compile"
    return -1
}

set testfile2 "basics"
set srcfile2 ${testfile2}.c
set binfile2 [standard_output_file ${testfile2}]
if  { [gdb_compile "${srcdir}/${subdir}/${srcfile2}" "${binfile2}" executable {debug}] != "" } {
    untested "failed to compile"
    return -1
}

mi_delete_breakpoints
mi_gdb_reinitialize_dir $srcdir/$subdir
mi_gdb_load ${binfile}

# Desc:  Create global variable.
mi_create_varobj global_simple global_simple "create global variable"

mi_runto do_locals_tests

# Desc: create local variables
mi_create_varobj linteger linteger "create local variable linteger"

# Desc: create floating variable
mi_create_floating_varobj float_simple array "create floating variable"

#
# Reload the same binary.
# Global variable should remain, local should be invalidated.
#
mi_delete_breakpoints
mi_gdb_load ${binfile_bis}
mi_runto_main

# Change format of floating variable immediately after reload reveals a
# bug where gdb still uses a free'd pointer.
mi_gdb_test "-var-set-format float_simple hexadecimal" \
        "\\^done,format=\"hexadecimal\",value=\"\\\[-1\\\]\"" \
       "set format variable float_simple"

# Check local variable is "invalid".
mi_gdb_test "-var-update linteger" \
	"\\^done,changelist=\\\[\{name=\"linteger\",in_scope=\"invalid\",has_more=\"0\"\}\\\]" \
	"linteger not anymore in scope due to binary changes"

mi_gdb_test "-var-info-type linteger" \
	"\\^done,type=\"\"" \
	"no type for invalid variable linteger (1)"

# Check global variable is still correct.
mi_gdb_test "-var-update global_simple" \
	"\\^done,changelist=\\\[\]" \
	"global_simple still alive"

mi_gdb_test "-var-info-type global_simple" \
	"\\^done,type=\"simpleton\"" \
	"type simpleton for valid variable global_simple"


#
# Load an other binary.
# All variables must be invalidated.
#
mi_delete_breakpoints
mi_gdb_load ${binfile2}
# Check local variable are "invalid"
mi_gdb_test "-var-update linteger" \
	"\\^done,changelist=\\\[\{name=\"linteger\",in_scope=\"invalid\",has_more=\"0\"\}\\\]" \
	"linteger not valid anymore due to binary changes"

mi_gdb_test "-var-info-type linteger" \
	"\\^done,type=\"\"" \
	"no type for invalid variable linteger (2)"

# Check global variable are still correct.
mi_gdb_test "-var-update global_simple" \
	"\\^done,changelist=\\\[\{name=\"global_simple\",in_scope=\"invalid\",has_more=\"0\"\}\\\]" \
	"global_simple not anymore in scope due to binary changes"

mi_gdb_test "-var-info-type global_simple" \
	"\\^done,type=\"\"" \
	"no type for invalid variable global_simple"

mi_gdb_exit
return 0