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

   1 # Copyright (C) 2010-2024 Free Software Foundation, Inc.
   2 #
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 # This file is part of the GDB testsuite.  It tests the mechanism
  17 # exposing values to Python.
  18
  19 load_lib gdb-python.exp
  20
  21 require allow_python_tests
  22
  23 standard_testfile
  24
  25 if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile}] } {
  26     return -1
  27 }
  28
  29 if {![runto_main]} {
  30     return 0
  31 }
  32
  33 global hex decimal
  34 gdb_breakpoint [gdb_get_line_number "Block break here."]
  35 gdb_continue_to_breakpoint "Block break here."
  36
  37 # Test initial innermost block.
  38 gdb_py_test_silent_cmd "python frame = gdb.selected_frame()" "Get Frame" 0
  39 gdb_py_test_silent_cmd "python block = frame.block()" \
  40     "Get block, initial innermost block" 0
  41 gdb_test "python print (block)" "<gdb.Block <anonymous> \{i, f, b\}>" \
  42     "check block not None"
  43 gdb_test "python print (block.function)" "None" "first anonymous block"
  44 gdb_test "python print (block.start)" "${decimal}" "check start not None"
  45 gdb_test "python print (block.end)" "${decimal}" "check end not None"
  46 gdb_test "python print (block\['f'\].name == 'f')" "True" "check variable access"
  47 gdb_test "python print (block\['nonexistent'\])" ".*KeyError.*: 'nonexistent'.*" \
  48          "check nonexistent variable"
  49 gdb_test "python print (block\[42\])" ".*TypeError.*: Expected a string.*" \
  50          "check non-string key"
  51
  52 # Test global/static blocks
  53 gdb_py_test_silent_cmd "python frame = gdb.selected_frame()" "Get Frame" 0
  54 gdb_py_test_silent_cmd "python block = frame.block()" \
  55     "Get block, frame.block" 0
  56 gdb_test "python print (block.is_global)" "False" "not a global block"
  57 gdb_test "python print (block.is_static)" "False" "not a static block"
  58 gdb_py_test_silent_cmd "python gblock = block.global_block" \
  59     "Get block, global_block" 1
  60 gdb_py_test_silent_cmd "python sblock = block.static_block" \
  61     "Get block, static_block" 1
  62 gdb_test "python print (gblock.is_global)" "True" "is the global block"
  63 gdb_test "python print (sblock.is_static)" "True" "is the static block"
  64
  65 # Move up superblock(s) until we reach function block_func.
  66 gdb_test_no_output "python block = block.superblock" "get superblock"
  67 gdb_test "python print (block.function)" "None" "second anonymous block"
  68 gdb_test_no_output "python block = block.superblock" "get superblock 2"
  69 gdb_test "python print (block.function)" "block_func" \
  70          "Print superblock 2 function"
  71
  72 # Switch frames, then test block for no_locals_func.
  73 gdb_test "continue" ".*" "continue to no_locals_func breakpoint"
  74 gdb_test "up" ".*" "up to no_locals_func"
  75 gdb_py_test_silent_cmd "python frame = gdb.selected_frame()" "Get Frame 2" 0
  76 gdb_py_test_silent_cmd "python block = frame.block()" "Get Frame 2's block" 0
  77 gdb_test "python print (repr (block))" "<gdb.Block no_locals_func \{\}>" \
  78     "Check block in no_locals_func"
  79 gdb_test "python print (block.function)" "no_locals_func" \
  80     "no_locals_func block"
  81
  82 # Switch frames, then test block for few_locals_func.
  83 gdb_test "continue" ".*" "continue to few_locals_func breakpoint"
  84 gdb_test "up" ".*" "up to few_locals_func"
  85 gdb_py_test_silent_cmd "python frame = gdb.selected_frame()" "Get Frame 2" 0
  86 gdb_py_test_silent_cmd "python block = frame.block()" "Get Frame 2's block" 0
  87 gdb_test "python print (repr (block))" \
  88     "<gdb.Block few_locals_func \{i, j, k, x, y\}>" \
  89     "Check block in few_locals_func"
  90 gdb_test "python print (block.function)" "few_locals_func" \
  91     "few_locals_func block"
  92
  93 # Switch frames, then test block for many_locals_func.
  94 gdb_test "continue" ".*" "continue to many_locals_func breakpoint"
  95 gdb_test "up" ".*" "up to many_locals_func"
  96 gdb_py_test_silent_cmd "python frame = gdb.selected_frame()" "Get Frame 2" 0
  97 gdb_py_test_silent_cmd "python block = frame.block()" "Get Frame 2's block" 0
  98 gdb_test "python print (repr (block))" \
  99     "<gdb.Block many_locals_func \{i, j, k, x, y, \\.\\.\\. \\(1 more symbol\\)\}>" \
 100     "Check block in many_locals_func"
 101 gdb_test "python print (block.function)" "many_locals_func" \
 102     "many_locals_func block"
 103
 104 # Switch frames, then test for main block.
 105 gdb_test "up" ".*"
 106 gdb_py_test_silent_cmd "python frame = gdb.selected_frame()" "Get Frame 2" 0
 107 gdb_py_test_silent_cmd "python block = frame.block()" "Get Frame 2's block" 0
 108 gdb_test "python print (repr (block))" "<gdb.Block main \{.*\}>" \
 109          "Check Frame 2's block not None"
 110 gdb_test "python print (block.function)" "main" "main block"
 111
 112 # Test Block is_valid.  This must always be the last test in this
 113 # testcase as it unloads the object file.
 114 delete_breakpoints
 115 gdb_py_test_silent_cmd "python frame = gdb.selected_frame()" "Get Frame" 0
 116 gdb_py_test_silent_cmd "python block = frame.block()" "Get Frame block" 0
 117 gdb_py_test_silent_cmd "python block_iter = iter (block)" "Get Frame block" 0
 118 gdb_test "python print (block.is_valid())" "True" \
 119          "Check block validity"
 120 gdb_test "python print (block_iter.is_valid())" "True" \
 121          "Check block_iter validity"
 122 gdb_test_no_output "python x = hash(block)" "block is hashable"
 123 gdb_test "python print (type (x))" "<class 'int'>" "block hash is integer"
 124 gdb_unload
 125 gdb_test "python print (block.is_valid())" "False" \
 126          "Check block validity after unload"
 127 gdb_test "python print (block_iter.is_valid())" "False" \
 128          "Check block_iter validity after unload"
 129 gdb_test "python print (hash (block) == x)" "True" \
 130     "block hash did not change"