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

   1 # Copyright (C) 2009, 2010 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 # of exposing types to Python.
  18
  19 if $tracelevel then {
  20     strace $tracelevel
  21 }
  22
  23 load_lib gdb-python.exp
  24
  25 set testfile "py-type"
  26 set srcfile ${testfile}.c
  27 set binfile ${objdir}/${subdir}/${testfile}
  28
  29 if [get_compiler_info not-used c++] {
  30     return -1;
  31 }
  32
  33 # Build inferior to language specification.
  34 proc build_inferior {lang} {
  35   global srcdir subdir srcfile binfile testfile hex
  36
  37   if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable "debug $lang"] != "" } {
  38       untested "Couldn't compile ${srcfile} in $lang mode"
  39       return -1
  40   }
  41 }
  42
  43 # Restart GDB.
  44 proc restart_gdb {} {
  45   global srcdir subdir srcfile binfile testfile hex
  46
  47   gdb_exit
  48   gdb_start
  49   gdb_reinitialize_dir $srcdir/$subdir
  50   gdb_load ${binfile}
  51
  52   if ![runto_main ] then {
  53       perror "couldn't run to breakpoint"
  54       return
  55   }
  56 }
  57
  58 # Set breakpoint and run to that breakpoint.
  59 proc runto_bp {bp} {
  60   gdb_breakpoint [gdb_get_line_number $bp]
  61   gdb_continue_to_breakpoint $bp
  62 }
  63
  64 proc test_fields {lang} {
  65   global gdb_prompt
  66
  67   if {$lang == "c++"} {
  68       # Test usage with a class
  69       gdb_py_test_silent_cmd "print c" "print value" 1
  70       gdb_py_test_silent_cmd "python c = gdb.history (0)" "get value from history" 1
  71       gdb_py_test_silent_cmd "python fields = c.type.fields()" "get fields" 1
  72       gdb_test "python print len(fields)" "2" "Check number of fields"
  73       gdb_test "python print fields\[0\].name" "c" "Check class field c name"
  74       gdb_test "python print fields\[1\].name" "d" "Check class field d name"
  75
  76       gdb_test "python print c.type == gdb.parse_and_eval('d').type" "False"
  77       gdb_test "python print c.type == gdb.parse_and_eval('d').type.fields()\[0\].type" \
  78           "True"
  79   }
  80
  81   # Test normal fields usage in structs.
  82   gdb_py_test_silent_cmd "print st" "print value" 1
  83   gdb_py_test_silent_cmd "python st = gdb.history (0)" "get value from history" 1
  84   gdb_py_test_silent_cmd "python fields = st.type.fields()" "get fields" 1
  85   gdb_test "python print len(fields)" "2" "Check number of fields"
  86   gdb_test "python print fields\[0\].name" "a" "Check structure field a name"
  87   gdb_test "python print fields\[1\].name" "b" "Check structure field b name"
  88
  89   # Test regression PR python/10805
  90   gdb_py_test_silent_cmd "print ar" "print value" 1
  91   gdb_py_test_silent_cmd "python ar = gdb.history (0)" "get value from  history" 1
  92   gdb_test "python fields = ar.type.fields()"
  93   gdb_test "python print len(fields)" "1" "Check the number of fields"
  94   gdb_test "python print fields\[0\].type" "<range type>" "Check array field type"
  95
  96   gdb_test "python print ar\[0\].cast(ar\[0\].type.array(1))" \
  97       ".1, 2." "cast to array with one argument"
  98   gdb_test "python print ar\[0\].cast(ar\[0\].type.array(0, 1))" \
  99       ".1, 2." "cast to array with two arguments"
 100
 101   gdb_test "python print ar\[0\].type == ar\[0\].type" "True"
 102 }
 103
 104 proc test_base_class {} {
 105   gdb_py_test_silent_cmd "print d" "print value" 1
 106   gdb_py_test_silent_cmd "python d = gdb.history (0)" "get value from  history" 1
 107   gdb_py_test_silent_cmd "python fields = d.type.fields()" "get value from history" 1
 108   gdb_test "python print len(fields)" "3" "Check the number of fields"
 109   gdb_test "python print fields\[0\].is_base_class" "True" "Check base class"
 110   gdb_test "python print fields\[1\].is_base_class" "False" "Check base class"
 111 }
 112
 113 proc test_range {} {
 114
 115   # Test a valid range request.
 116   gdb_py_test_silent_cmd "print ar" "print value" 1
 117   gdb_py_test_silent_cmd "python ar = gdb.history (0)" "get value from history" 1
 118   gdb_test "python print len(ar.type.range())" "2" "Check correct tuple length"
 119   gdb_test "python print ar.type.range()\[0\]" "0" "Check low range"
 120   gdb_test "python print ar.type.range()\[1\]" "1" "Check high range"
 121
 122   # Test a range request on a ranged type.
 123   gdb_py_test_silent_cmd "print ar" "print value" 1
 124   gdb_py_test_silent_cmd "python ar = gdb.history (0)" "get value from  history" 1
 125   gdb_py_test_silent_cmd "python fields = ar.type.fields()" "get fields" 1
 126   gdb_test "python print fields\[0\].type.range()\[0\]" "0" "Check range type low bound"
 127   gdb_test "python print fields\[0\].type.range()\[1\]" "1" "Check range type high bound"
 128
 129   # Test where a range does not exist.
 130   gdb_py_test_silent_cmd "print st" "print value" 1
 131   gdb_py_test_silent_cmd "python st = gdb.history (0)" "get value from history" 1
 132   gdb_test "python print st.type.range()" "RuntimeError: This type does not have a range.*" "Check range for non ranged type."
 133 }
 134
 135 # Some tests of template arguments.
 136 proc test_template {} {
 137     gdb_py_test_silent_cmd \
 138         "python ttype = gdb.parse_and_eval('temvar').type" \
 139         "get type of temvar" \
 140         1
 141
 142     gdb_test "python print ttype.template_argument(0)" "D"
 143     gdb_test "python print isinstance(ttype.template_argument(0), gdb.Type)" \
 144         "True"
 145
 146     # The next two tests require a GCC that emits DW_TAG_template_*.
 147     # GCC 4.4 does not emit it, 4.5 and 6 do emit it.
 148     set have_older_gcc 0
 149     if {[test_compiler_info {gcc-[0-3]-*}]
 150         || [test_compiler_info {gcc-4-[0-4]-*}]} {
 151         set have_older_gcc 1
 152     }
 153     if $have_older_gcc { setup_xfail *-*-* }
 154     gdb_test "python print ttype.template_argument(1)" "23"
 155     if $have_older_gcc { setup_xfail *-*-* }
 156     gdb_test "python print isinstance(ttype.template_argument(1), gdb.Value)" \
 157         "True"
 158
 159     setup_kfail "gcc/41736" *-*-*
 160     gdb_test "python print ttype.template_argument(2)" "&C::c"
 161 }
 162
 163 # Perform C Tests.
 164 build_inferior "c"
 165 restart_gdb
 166
 167 # Skip all tests if Python scripting is not enabled.
 168 if { [skip_python_tests] } { continue }
 169
 170 runto_bp "break to inspect struct and array."
 171 test_fields "c"
 172
 173 # Perform C++ Tests.
 174 build_inferior "c++"
 175 restart_gdb
 176 runto_bp "break to inspect struct and array."
 177 test_fields "c++"
 178 test_base_class
 179 test_range
 180 test_template