gdb/testsuite/gdb.python/py-block.exp

# Copyright (C) 2010-2021 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/>.

# This file is part of the GDB testsuite.  It tests the mechanism
# exposing values to Python.

load_lib gdb-python.exp

standard_testfile

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

# Skip all tests if Python scripting is not enabled.
if { [skip_python_tests] } { continue }

if ![runto_main] then {
    return 0
}

global hex decimal
gdb_breakpoint [gdb_get_line_number "Block break here."]
gdb_continue_to_breakpoint "Block break here."

# Test initial innermost block.
gdb_py_test_silent_cmd "python frame = gdb.selected_frame()" "Get Frame" 0
gdb_py_test_silent_cmd "python block = frame.block()" \
    "Get block, initial innermost block" 0
gdb_test "python print (block)" "<gdb.Block object at $hex>" "check block not None"
gdb_test "python print (block.function)" "None" "first anonymous block"
gdb_test "python print (block.start)" "${decimal}" "check start not None"
gdb_test "python print (block.end)" "${decimal}" "check end not None"
gdb_test "python print (block\['f'\].name == 'f')" "True" "check variable access"
gdb_test "python print (block\['nonexistent'\])" ".*KeyError: 'nonexistent'.*" \
         "check nonexistent variable"
gdb_test "python print (block\[42\])" ".*TypeError: Expected a string.*" \
         "check non-string key"

# Test global/static blocks
gdb_py_test_silent_cmd "python frame = gdb.selected_frame()" "Get Frame" 0
gdb_py_test_silent_cmd "python block = frame.block()" \
    "Get block, frame.block" 0
gdb_test "python print (block.is_global)" "False" "not a global block"
gdb_test "python print (block.is_static)" "False" "not a static block"
gdb_py_test_silent_cmd "python gblock = block.global_block" \
    "Get block, global_block" 1
gdb_py_test_silent_cmd "python sblock = block.static_block" \
    "Get block, static_block" 1
gdb_test "python print (gblock.is_global)" "True" "is the global block"
gdb_test "python print (sblock.is_static)" "True" "is the static block"

# Move up superblock(s) until we reach function block_func.
gdb_test_no_output "python block = block.superblock" "get superblock"
gdb_test "python print (block.function)" "None" "second anonymous block"
gdb_test_no_output "python block = block.superblock" "get superblock 2"
gdb_test "python print (block.function)" "block_func" \
         "Print superblock 2 function"

# Switch frames, then test for main block.
gdb_test "up" ".*"
gdb_py_test_silent_cmd "python frame = gdb.selected_frame()" "Get Frame 2" 0
gdb_py_test_silent_cmd "python block = frame.block()" "Get Frame 2's block" 0
gdb_test "python print (block)" "<gdb.Block object at $hex>" \
         "Check Frame 2's block not None"
gdb_test "python print (block.function)" "main" "main block"


# Test Block is_valid.  This must always be the last test in this
# testcase as it unloads the object file.
delete_breakpoints
gdb_py_test_silent_cmd "python frame = gdb.selected_frame()" "Get Frame" 0
gdb_py_test_silent_cmd "python block = frame.block()" "Get Frame block" 0
gdb_py_test_silent_cmd "python block_iter = iter (block)" "Get Frame block" 0
gdb_test "python print (block.is_valid())" "True" \
         "Check block validity"
gdb_test "python print (block_iter.is_valid())" "True" \
         "Check block_iter validity"
gdb_unload
gdb_test "python print (block.is_valid())" "False" \
         "Check block validity after unload"
gdb_test "python print (block_iter.is_valid())" "False" \
         "Check block_iter validity after unload"