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

   1 # Copyright (C) 2008-2021 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 Python-based
  17 # pretty-printing for the CLI.
  18
  19 load_lib gdb-python.exp
  20
  21 standard_testfile
  22
  23 # Start with a fresh gdb.
  24 gdb_exit
  25 gdb_start
  26
  27 # Skip all tests if Python scripting is not enabled.
  28 if { [skip_python_tests] } { continue }
  29
  30 proc run_lang_tests {exefile lang} {
  31     global srcdir subdir srcfile testfile hex
  32     if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${exefile}" executable "debug $lang"] != "" } {
  33         untested "failed to compile in $lang mode"
  34         return -1
  35     }
  36
  37     set nl "\[\r\n\]+"
  38
  39     # Start with a fresh gdb.
  40     gdb_exit
  41     gdb_start
  42     gdb_reinitialize_dir $srcdir/$subdir
  43     gdb_load ${exefile}
  44
  45     if ![runto_main ] then {
  46         perror "couldn't run to breakpoint"
  47         return
  48     }
  49
  50     gdb_test_no_output "set print pretty on"
  51
  52     gdb_breakpoint [gdb_get_line_number "break to inspect" ${testfile}.c]
  53     gdb_continue_to_breakpoint "break to inspect" ".*break to inspect.*"
  54
  55
  56     set remote_python_file [gdb_remote_download host \
  57                                 ${srcdir}/${subdir}/${testfile}.py]
  58
  59     gdb_test_no_output "source ${remote_python_file}" "load python file"
  60
  61     gdb_test "print ss" " = a=< a=<1> b=<$hex>> b=< a=<2> b=<$hex>>"
  62     gdb_test "print ssa\[1\]" " = a=< a=<5> b=<$hex>> b=< a=<6> b=<$hex>>"
  63     gdb_test "print ssa" " = {a=< a=<3> b=<$hex>> b=< a=<4> b=<$hex>>, a=< a=<5> b=<$hex>> b=< a=<6> b=<$hex>>}"
  64
  65     gdb_test "print arraystruct" " = {$nl *y = 7, *$nl *x = { a=<23> b=<$hex>,  a=<24> b=<$hex>} *$nl *}"
  66
  67     # Test that when a pretty-printer returns a gdb.Value in its to_string, we
  68     # call the pretty-printer of that value too.
  69     gdb_test "print tsrvw" " = Inner to_string 1989"
  70
  71     if {$lang == "c++"} {
  72         gdb_test "print cps" "=  a=<8> b=<$hex>"
  73         gdb_test "print cpss" " = {$nl *zss = 9, *$nl *s =  a=<10> b=<$hex>$nl}"
  74         gdb_test "print cpssa\[0\]" " = {$nl *zss = 11, *$nl *s =  a=<12> b=<$hex>$nl}"
  75         gdb_test "print cpssa\[1\]" " = {$nl *zss = 13, *$nl *s =  a=<14> b=<$hex>$nl}"
  76         gdb_test "print cpssa" " = {{$nl *zss = 11, *$nl *s =  a=<12> b=<$hex>$nl *}, {$nl *zss = 13, *$nl *s =  a=<14> b=<$hex>$nl *}}"
  77         gdb_test "print sss" "= a=<15> b=< a=<8> b=<$hex>>"
  78         gdb_test "print ref" "= a=<15> b=< a=<8> b=<$hex>>"
  79         gdb_test "print derived" \
  80             " = \{.*<Vbase1> = pp class name: Vbase1.*<Vbase2> = \{.*<VirtualTest> = pp value variable is: 1,.*members of Vbase2:.*_vptr.Vbase2 = $hex.*<Vbase3> = \{.*members of Vbase3.*members of Derived:.*value = 2.*"
  81         gdb_test "print ns " "\"embedded\\\\000null\\\\000string\"" \
  82             "print ns with default element limit"
  83         gdb_test_no_output "set print elements 3"
  84         gdb_test "print ns" "emb\.\.\.." \
  85             "print ns with element limit of 3"
  86         gdb_test_no_output "set print elements 10"
  87         gdb_test "print ns" "embedded\\\\000n\.\.\.." \
  88             "print ns with element limit of 10"
  89         gdb_test_no_output "set print elements 200"
  90     }
  91
  92     if { ![is_address_zero_readable] } {
  93         gdb_test "print ns2" \
  94             ".error reading variable: Cannot access memory at address 0x0."
  95     }
  96
  97     gdb_test "print x" " = \"this is x\""
  98     gdb_test "print cstring" " = \"const string\""
  99
 100     gdb_test "print estring" " = \"embedded x\\\\201\\\\202\\\\203\\\\204\""
 101     if { ![is_address_zero_readable] } {
 102             gdb_test "print estring3" \
 103                 " = <error reading variable: Cannot create a lazy string with address 0x0, and a non-zero length.>"
 104     }
 105
 106     gdb_test_no_output "python pp_ls_encoding = 'UTF-8'"
 107     gdb_test "print estring2" "\"embedded \", <incomplete sequence \\\\302>"
 108
 109     gdb_test_no_output "set python print-stack full"
 110     gdb_test "print hint_error" "Exception: hint failed\r\nhint_error_val"
 111
 112     gdb_test "print c" " = container \"container\" with 2 elements = {$nl *.0. = 23,$nl *.1. = 72$nl}" \
 113         "print c, pretty printing on, default display hint"
 114
 115     gdb_test_no_output "set variable c.is_array_p=1"
 116     gdb_test "print c" " = container \"container\" with 2 elements = \\{23, 72\\}" \
 117         "print c, pretty printing on, display hint is now array"
 118
 119     # Setting is_map_p while _is_array_p is also set will cause the
 120     # display_hint method to raise an exception (see py-prettyprint.py).
 121     gdb_test_no_output "set variable c.is_map_p=1"
 122
 123     # This test checks what happens when the display hint throws an
 124     # error.  GDB just treats this as though the display hint was
 125     # None.
 126     set py_exception \
 127         [multi_line \
 128              "Traceback\[^\r\n\]+" \
 129              "\\s+File \"\[^\r\n\]+/py-prettyprint.py\", line \[0-9\]+, in display_hint" \
 130              "\\s+raise Exception\[^\r\n\]+" \
 131              "Exception: invalid object state found in display_hint"]
 132     gdb_test "print c" \
 133         [multi_line \
 134              " = ${py_exception}" \
 135              "container \"container\" with 2 elements = {" \
 136              "\\s+\\\[0\\\] = 23," \
 137              "\\s+\\\[1\\\] = 72" \
 138              "}"] \
 139         "print c, pretty printing on, exception raised from display_hint"
 140
 141     # Unset is_array_p so that display_hint no longer raises an
 142     # exception.
 143     gdb_test_no_output "set variable c.is_array_p=0"
 144
 145     gdb_test "print c" " = container \"container\" with 2 elements = \{$nl  \\\[23\\\] = 72$nl\}" \
 146         "print c, pretty printing on, display hint is now map"
 147
 148     gdb_test "print nstype" " = {$nl *.0. = 7,$nl *.1. = 42$nl}"
 149
 150     gdb_test_no_output "set print pretty off"
 151     gdb_test "print nstype" " = {.0. = 7, .1. = 42}" \
 152         "print nstype on one line"
 153
 154     # Now we have pretty printing turned off, try printing 'c' again.
 155     gdb_test "print c" " = container \"container\" with 2 elements = \{\\\[23\\\] = 72\}" \
 156         "print c, pretty printing off, display hint is now map"
 157
 158     gdb_test_no_output "set variable c.is_map_p=0"
 159     gdb_test "print c" " = container \"container\" with 2 elements = \{\\\[0\\\] = 23, \\\[1\\\] = 72\}" \
 160         "print c, pretty printing off, default display hint"
 161
 162     # Check that GDB doesn't lose typedefs when looking for a printer.
 163     gdb_test "print an_int" " = -1"
 164     gdb_test "print (int) an_int" " = -1"
 165     gdb_test "print (int_type) an_int" " = type=int_type, val=-1"
 166
 167     gdb_test "print an_int_type" " = type=int_type, val=1"
 168     gdb_test "print (int_type) an_int_type" " = type=int_type, val=1"
 169
 170     gdb_test "print an_int_type2" " = type=int_type2, val=2"
 171     gdb_test "print (int) an_int_type2" " = 2"
 172     gdb_test "print (int_type) an_int_type2" " = type=int_type, val=2"
 173     gdb_test "print (int_type2) an_int_type2" " = type=int_type2, val=2"
 174
 175     # PR python/16047: it is ok for a pretty printer not to have a
 176     # to_string method.
 177     gdb_test "print (int_type3) an_int_type2" " = {s = 27}"
 178
 179     gdb_continue_to_end
 180 }
 181
 182 with_test_prefix c {
 183     if { [run_lang_tests "${binfile}" "c"] == -1 } {
 184         return
 185     }
 186 }
 187 with_test_prefix c++ {
 188     if { [run_lang_tests "${binfile}-cxx" "c++"] == -1 } {
 189         return
 190     }
 191 }
 192
 193 # Run various other tests.
 194
 195 # Start with a fresh gdb.
 196 gdb_exit
 197 gdb_start
 198 gdb_reinitialize_dir $srcdir/$subdir
 199 gdb_load ${binfile}
 200
 201 if ![runto_main ] then {
 202     perror "couldn't run to breakpoint"
 203     return
 204 }
 205
 206 set remote_python_file [gdb_remote_download host \
 207                             ${srcdir}/${subdir}/${testfile}.py]
 208
 209 gdb_test_no_output "source ${remote_python_file}" "load python file"
 210
 211 gdb_breakpoint [gdb_get_line_number "eval-break"]
 212 gdb_continue_to_breakpoint "eval-break" ".* eval-break .*"
 213
 214 gdb_test "info locals" "eval9 = eval=<123456789>"
 215
 216 gdb_breakpoint [gdb_get_line_number "break to inspect" ${testfile}.c ]
 217 gdb_continue_to_breakpoint "break to inspect" ".*break to inspect.*"
 218
 219 gdb_test "print ss" " = a=< a=<1> b=<$hex>> b=< a=<2> b=<$hex>>" \
 220     "print ss enabled #1"
 221
 222 gdb_test_no_output "python disable_lookup_function ()"
 223
 224 gdb_test "print ss" " = {a = {a = 1, b = $hex}, b = {a = 2, b = $hex}}" \
 225     "print ss disabled"
 226
 227 gdb_test_no_output "python enable_lookup_function ()"
 228
 229 gdb_test "print ss" " = a=< a=<1> b=<$hex>> b=< a=<2> b=<$hex>>" \
 230     "print ss enabled #2"
 231
 232 gdb_test "print -raw-values -- ss" " = {a = {a = 1, b = $hex}, b = {a = 2, b = $hex}}" \
 233     "print -raw-values -- ss"
 234
 235 gdb_test "print -raw-values on -- ss" " = {a = {a = 1, b = $hex}, b = {a = 2, b = $hex}}" \
 236     "print -raw-values on -- ss"
 237
 238 gdb_test "with print raw-values -- print ss" " = {a = {a = 1, b = $hex}, b = {a = 2, b = $hex}}" \
 239     "with print raw-values -- print ss"
 240
 241 # Test interaction between /r format and raw-values option:
 242 #   When /r is not present, raw-values option tells to bypass (or not) the pretty printers.
 243 #     (these cases are tested above).
 244 #   When /r is present, it must override the option raw-values off.
 245 gdb_test "print /r ss" " = {a = {a = 1, b = $hex}, b = {a = 2, b = $hex}}"
 246
 247 gdb_test "with print raw-values off -- print /r ss" " = {a = {a = 1, b = $hex}, b = {a = 2, b = $hex}}"
 248
 249 gdb_test "print -raw-values off -- /r ss" " = {a = {a = 1, b = $hex}, b = {a = 2, b = $hex}}"
 250
 251