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

   1 # Copyright (C) 2009-2012 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 load_lib gdb-python.exp
  20
  21 set testfile "py-type"
  22 set srcfile ${testfile}.c
  23 set binfile ${objdir}/${subdir}/${testfile}
  24
  25 if [get_compiler_info c++] {
  26     return -1;
  27 }
  28
  29 # Build inferior to language specification.
  30 proc build_inferior {exefile lang} {
  31   global srcdir subdir srcfile testfile hex
  32
  33   if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${exefile}" executable "debug $lang"] != "" } {
  34       untested "Couldn't compile ${srcfile} in $lang mode"
  35       return -1
  36   }
  37 }
  38
  39 # Restart GDB.
  40 proc restart_gdb {exefile} {
  41   global srcdir subdir srcfile testfile hex
  42
  43   gdb_exit
  44   gdb_start
  45   gdb_reinitialize_dir $srcdir/$subdir
  46   gdb_load ${exefile}
  47
  48   if ![runto_main ] then {
  49       perror "couldn't run to breakpoint"
  50       return
  51   }
  52 }
  53
  54 # Set breakpoint and run to that breakpoint.
  55 proc runto_bp {bp} {
  56   gdb_breakpoint [gdb_get_line_number $bp]
  57   gdb_continue_to_breakpoint $bp
  58 }
  59
  60 proc test_fields {lang} {
  61   global gdb_prompt
  62
  63   # .fields() of a typedef should still return the underlying field list
  64   gdb_test "python print len(gdb.parse_and_eval('ts').type.fields())" "2" \
  65       "$lang typedef field list"
  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   # Regression test for
  90   # http://sourceware.org/bugzilla/show_bug.cgi?id=12070.
  91   gdb_test "python print 'type' in dir(fields\[0\])" "True" \
  92     "Check that dir includes name"
  93
  94   # Test Python mapping behavior of gdb.Type for structs/classes
  95   gdb_test "python print len(st.type)" "2" "Check number of fields"
  96   gdb_test "python print st.type\['a'\].name" "a" "Check fields lookup by name"
  97     gdb_test "python print \[v.bitpos for v in st.type.itervalues()\]" {\[0L, 32L\]} "Check fields iteration over values"
  98     gdb_test "python print \[(n, v.bitpos) for (n, v) in st.type.items()\]" {\[\('a', 0L\), \('b', 32L\)\]} "Check fields items list"
  99   gdb_test "python print 'a' in st.type" "True" "Check field name exists test"
 100   gdb_test "python print 'nosuch' in st.type" "False" "Check field name nonexists test"
 101   gdb_test "python print not not st.type" "True" "Check conversion to bool"
 102
 103   # Test rejection of mapping operations on scalar types
 104   gdb_test "python print len (st.type\['a'\].type)" "TypeError: Type is not a structure, union, or enum type.*"
 105   gdb_test "python print st.type\['a'\].type.has_key ('x')" "TypeError: Type is not a structure, union, or enum type.*"
 106   gdb_test "python print st.type\['a'\].type.keys ()" "TypeError: Type is not a structure, union, or enum type.*"
 107   gdb_test "python print st.type\['a'\].type\['x'\]" "TypeError: Type is not a structure, union, or enum type.*"
 108
 109   # Test conversion to bool on scalar types
 110   gdb_test "python print not not st.type\['a'\].type" "True"
 111
 112   # Test regression PR python/10805
 113   gdb_py_test_silent_cmd "print ar" "print value" 1
 114   gdb_py_test_silent_cmd "python ar = gdb.history (0)" "get value from  history" 1
 115   gdb_test "python fields = ar.type.fields()"
 116   gdb_test "python print len(fields)" "1" "Check the number of fields"
 117   gdb_test "python print fields\[0\].type" "<range type>" "Check array field type"
 118
 119   gdb_test "python print ar\[0\].cast(ar\[0\].type.array(1))" \
 120       ".1, 2." "cast to array with one argument"
 121   gdb_test "python print ar\[0\].cast(ar\[0\].type.array(0, 1))" \
 122       ".1, 2." "cast to array with two arguments"
 123
 124   gdb_test "python print ar\[0\].type == ar\[0\].type" "True"
 125 }
 126
 127 proc test_enums {} {
 128   gdb_py_test_silent_cmd "print e" "print value" 1
 129   gdb_py_test_silent_cmd "python e = gdb.history (0)" "get value from  history" 1
 130   gdb_py_test_silent_cmd "python fields = e.type.fields()" "get value from history" 1
 131   gdb_test "python print len(fields)" "3" "Check the number of enum fields"
 132   gdb_test "python print fields\[0\].name" "v1" "Check enum field name"
 133   gdb_test "python print fields\[1\].name" "v2" "Check enum field name"
 134
 135   # Ditto but by mapping operations
 136   gdb_test "python print len(e.type)" "3" "Check the number of enum fields"
 137   gdb_test "python print e.type\['v1'\].name" "v1" "Check enum field lookup by name"
 138   gdb_test "python print e.type\['v3'\].name" "v3" "Check enum field lookup by name"
 139     gdb_test "python print \[v.enumval for v in e.type.itervalues()\]" {\[0L, 1L, 2L\]} "Check num fields iteration over values"
 140     gdb_test "python print \[(n, v.enumval) for (n, v) in e.type.items()\]" {\[\('v1', 0L\), \('v2', 1L\), \('v3', 2L\)\]} "Check enum fields items list"
 141 }
 142 proc test_base_class {} {
 143   gdb_py_test_silent_cmd "print d" "print value" 1
 144   gdb_py_test_silent_cmd "python d = gdb.history (0)" "get value from  history" 1
 145   gdb_py_test_silent_cmd "python fields = d.type.fields()" "get value from history" 1
 146   gdb_test "python print len(fields)" "3" "Check the number of fields"
 147   gdb_test "python print fields\[0\].is_base_class" "True" "Check base class"
 148   gdb_test "python print fields\[1\].is_base_class" "False" "Check base class"
 149 }
 150
 151 proc test_range {} {
 152
 153   # Test a valid range request.
 154   gdb_py_test_silent_cmd "print ar" "print value" 1
 155   gdb_py_test_silent_cmd "python ar = gdb.history (0)" "get value from history" 1
 156   gdb_test "python print len(ar.type.range())" "2" "Check correct tuple length"
 157   gdb_test "python print ar.type.range()\[0\]" "0" "Check low range"
 158   gdb_test "python print ar.type.range()\[1\]" "1" "Check high range"
 159
 160   # Test a range request on a ranged type.
 161   gdb_py_test_silent_cmd "print ar" "print value" 1
 162   gdb_py_test_silent_cmd "python ar = gdb.history (0)" "get value from  history" 1
 163   gdb_py_test_silent_cmd "python fields = ar.type.fields()" "get fields" 1
 164   gdb_test "python print fields\[0\].type.range()\[0\]" "0" "Check range type low bound"
 165   gdb_test "python print fields\[0\].type.range()\[1\]" "1" "Check range type high bound"
 166
 167   # Test where a range does not exist.
 168   gdb_py_test_silent_cmd "print st" "print value" 1
 169   gdb_py_test_silent_cmd "python st = gdb.history (0)" "get value from history" 1
 170   gdb_test "python print st.type.range()" "RuntimeError: This type does not have a range.*" "Check range for non ranged type."
 171 }
 172
 173 # Some tests of template arguments.
 174 proc test_template {} {
 175     gdb_py_test_silent_cmd \
 176         "python ttype = gdb.parse_and_eval('temvar').type" \
 177         "get type of temvar" \
 178         1
 179
 180     gdb_test "python print ttype.template_argument(0)" "D"
 181     gdb_test "python print isinstance(ttype.template_argument(0), gdb.Type)" \
 182         "True"
 183
 184     # The next two tests require a GCC that emits DW_TAG_template_*.
 185     # GCC 4.4 does not emit it, 4.5 and 6 do emit it.
 186     set have_older_gcc 0
 187     if {[test_compiler_info {gcc-[0-3]-*}]
 188         || [test_compiler_info {gcc-4-[0-4]-*}]} {
 189         set have_older_gcc 1
 190     }
 191     if $have_older_gcc { setup_xfail *-*-* }
 192     gdb_test "python print ttype.template_argument(1)" "23"
 193     if $have_older_gcc { setup_xfail *-*-* }
 194     gdb_test "python print isinstance(ttype.template_argument(1), gdb.Value)" \
 195         "True"
 196
 197     if {[test_compiler_info {gcc-[0-3]-*}]
 198         || [test_compiler_info {gcc-4-[0-5]-*}]} {
 199         setup_xfail "gcc/46955" *-*-*
 200     }
 201     gdb_test "python print ttype.template_argument(2)" "&C::c"
 202 }
 203
 204 # Perform C Tests.
 205 build_inferior "${binfile}" "c"
 206 restart_gdb "${binfile}"
 207
 208 # Skip all tests if Python scripting is not enabled.
 209 if { [skip_python_tests] } { continue }
 210
 211 runto_bp "break to inspect struct and array."
 212 test_fields "c"
 213 test_enums
 214
 215 # Perform C++ Tests.
 216 build_inferior "${binfile}-cxx" "c++"
 217 restart_gdb "${binfile}-cxx"
 218 runto_bp "break to inspect struct and array."
 219 test_fields "c++"
 220 test_base_class
 221 test_range
 222 test_template
 223 test_enums