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 set testfile "py-type"
  24 set srcfile ${testfile}.c
  25 set binfile ${objdir}/${subdir}/${testfile}
  26
  27 if [get_compiler_info not-used c++] {
  28     return -1;
  29 }
  30
  31 # Build inferior to language specification.
  32 proc build_inferior {lang} {
  33   global srcdir subdir srcfile binfile testfile hex
  34
  35   if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable "debug $lang"] != "" } {
  36       untested "Couldn't compile ${srcfile} in $lang mode"
  37       return -1
  38   }
  39 }
  40
  41 # Restart GDB.
  42 proc restart_gdb {} {
  43   global srcdir subdir srcfile binfile testfile hex
  44
  45   gdb_exit
  46   gdb_start
  47   gdb_reinitialize_dir $srcdir/$subdir
  48   gdb_load ${binfile}
  49
  50   if ![runto_main ] then {
  51       perror "couldn't run to breakpoint"
  52       return
  53   }
  54 }
  55
  56 # Set breakpoint and run to that breakpoint.
  57 proc runto_bp {bp} {
  58   gdb_breakpoint [gdb_get_line_number $bp]
  59   gdb_continue_to_breakpoint $bp
  60 }
  61
  62 # Run a command in GDB, and report a failure if a Python exception is thrown.
  63 # If report_pass is true, report a pass if no exception is thrown.
  64 proc gdb_py_test_silent_cmd {cmd name report_pass} {
  65   global gdb_prompt
  66
  67   gdb_test_multiple $cmd $name {
  68       -re "Traceback.*$gdb_prompt $"  { fail $name }
  69       -re "$gdb_prompt $"             { if $report_pass { pass $name } }
  70   }
  71 }
  72
  73 proc test_fields {lang} {
  74   global gdb_prompt
  75
  76   if {$lang == "c++"} {
  77       # Test usage with a class
  78       gdb_py_test_silent_cmd "print c" "print value" 1
  79       gdb_py_test_silent_cmd "python c = gdb.history (0)" "get value from history" 1
  80       gdb_py_test_silent_cmd "python fields = c.type.fields()" "get fields" 1
  81       gdb_test "python print len(fields)" "2" "Check number of fields"
  82       gdb_test "python print fields\[0\].name" "c" "Check class field c name"
  83       gdb_test "python print fields\[1\].name" "d" "Check class field d name"
  84   }
  85
  86   # Test normal fields usage in structs.
  87   gdb_py_test_silent_cmd "print st" "print value" 1
  88   gdb_py_test_silent_cmd "python st = gdb.history (0)" "get value from history" 1
  89   gdb_py_test_silent_cmd "python fields = st.type.fields()" "get fields" 1
  90   gdb_test "python print len(fields)" "2" "Check number of fields"
  91   gdb_test "python print fields\[0\].name" "a" "Check structure field a name"
  92   gdb_test "python print fields\[1\].name" "b" "Check structure field b name"
  93
  94   # Test regression PR python/10805
  95   gdb_py_test_silent_cmd "print ar" "print value" 1
  96   gdb_py_test_silent_cmd "python ar = gdb.history (0)" "get value from  history" 1
  97   gdb_test "python fields = ar.type.fields()"
  98   gdb_test "python print len(fields)" "1" "Check the number of fields"
  99   gdb_test "python print fields\[0\].type" "<range type>" "Check array field type"
 100
 101   gdb_test "python print ar\[0\].cast(ar\[0\].type.array(1))" \
 102       ".1, 2." "cast to array with one argument"
 103   gdb_test "python print ar\[0\].cast(ar\[0\].type.array(0, 1))" \
 104       ".1, 2." "cast to array with two arguments"
 105 }
 106
 107 proc test_base_class {} {
 108   gdb_py_test_silent_cmd "print d" "print value" 1
 109   gdb_py_test_silent_cmd "python d = gdb.history (0)" "get value from  history" 1
 110   gdb_py_test_silent_cmd "python fields = d.type.fields()" "get value from history" 1
 111   gdb_test "python print len(fields)" "3" "Check the number of fields"
 112   gdb_test "python print fields\[0\].is_base_class" "True" "Check base class"
 113   gdb_test "python print fields\[1\].is_base_class" "False" "Check base class"
 114 }
 115
 116 proc test_range {} {
 117
 118   # Test a valid range request.
 119   gdb_py_test_silent_cmd "print ar" "print value" 1
 120   gdb_py_test_silent_cmd "python ar = gdb.history (0)" "get value from history" 1
 121   gdb_test "python print len(ar.type.range())" "2" "Check correct tuple length"
 122   gdb_test "python print ar.type.range()\[0\]" "0" "Check low range"
 123   gdb_test "python print ar.type.range()\[1\]" "1" "Check high range"
 124
 125   # Test a range request on a ranged type.
 126   gdb_py_test_silent_cmd "print ar" "print value" 1
 127   gdb_py_test_silent_cmd "python ar = gdb.history (0)" "get value from  history" 1
 128   gdb_py_test_silent_cmd "python fields = ar.type.fields()" "get fields" 1
 129   gdb_test "python print fields\[0\].type.range()\[0\]" "0" "Check range type low bound"
 130   gdb_test "python print fields\[0\].type.range()\[1\]" "1" "Check range type high bound"
 131
 132   # Test where a range does not exist.
 133   gdb_py_test_silent_cmd "print st" "print value" 1
 134   gdb_py_test_silent_cmd "python st = gdb.history (0)" "get value from history" 1
 135   gdb_test "python print st.type.range()" "RuntimeError: This type does not have a range.*" "Check range for non ranged type."
 136 }
 137
 138 # Some tests of template arguments.
 139 proc test_template {} {
 140     gdb_py_test_silent_cmd \
 141         "python ttype = gdb.parse_and_eval('temvar').type" \
 142         "get type of temvar" \
 143         1
 144
 145     gdb_test "python print ttype.template_argument(0)" "D"
 146     gdb_test "python print isinstance(ttype.template_argument(0), gdb.Type)" \
 147         "True"
 148
 149     # The next two tests require a GCC that emits DW_TAG_template_*.
 150     # GCC 4.4 does not emit it, 4.5 and 6 do emit it.
 151     set have_older_gcc 0
 152     if {[test_compiler_info {gcc-[0-3]-*}]
 153         || [test_compiler_info {gcc-4-[0-4]-*}]} {
 154         set have_older_gcc 1
 155     }
 156     if $have_older_gcc { setup_xfail *-*-* }
 157     gdb_test "python print ttype.template_argument(1)" "23"
 158     if $have_older_gcc { setup_xfail *-*-* }
 159     gdb_test "python print isinstance(ttype.template_argument(1), gdb.Value)" \
 160         "True"
 161
 162     setup_kfail "gcc/41736" *-*-*
 163     gdb_test "python print ttype.template_argument(2)" "&C::c"
 164 }
 165
 166 # Perform C Tests.
 167 build_inferior "c"
 168 restart_gdb
 169
 170 # Skip all tests if Python scripting is not enabled.
 171 if { [skip_python_tests] } { continue }
 172
 173 runto_bp "break to inspect struct and array."
 174 test_fields "c"
 175
 176 # Perform C++ Tests.
 177 build_inferior "c++"
 178 restart_gdb
 179 runto_bp "break to inspect struct and array."
 180 test_fields "c++"
 181 test_base_class
 182 test_range
 183 test_template