gdb/testsuite/gdb.cp/formatted-ref.exp

   1 # Copyright 2007-2012 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 # Author: P. N. Hilfinger, AdaCore, Inc.
  17
  18 # This test checks the behavior of formatted print when applied to a
  19 # reference value.  The intended behavior is that a formatted print of
  20 # such a value should display the same value as a plain print,
  21 # modulo format, of course.  Older versions of GDB would instead print
  22 # the reference's address value itself when doing a formatted print,
  23 # rather than printing both that and the dereferenced value.  We also
  24 # check that the (non-standard) expression &(&x), where x is of type T&,
  25 # yields an appropriate value.
  26 # This also tests that some other arithmetic operations on references
  27 # work properly: condition expression using a reference object as one of its
  28 # operand.
  29
  30
  31 if { [skip_cplus_tests] } { continue }
  32
  33 set testfile "formatted-ref"
  34 set srcfile ${testfile}.cc
  35 set binfile ${objdir}/${subdir}/${testfile}
  36
  37 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug c++}] != "" } {
  38      untested formatted-ref.exp
  39      return -1
  40 }
  41
  42 proc get_address { var } {
  43     global expect_out
  44     global gdb_prompt
  45
  46     gdb_test_multiple "print &$var" "find address of $var" {
  47         -re "\\$\[0-9\]+ = \\(.*\\) (0x\[0-9a-f\]+).*$gdb_prompt $" {
  48             return $expect_out(1,string)
  49         }
  50         timeout {
  51             perror "couldn't find address of $var"
  52             return ""
  53         }
  54     }
  55     return ""
  56 }
  57
  58 proc test_p_x { var type val addr } {
  59     global gdb_prompt
  60
  61     set test "print/x $var"
  62     gdb_test_multiple $test $test {
  63         -re "\\$\[0-9\]+ = \\([string_to_regexp $type]\\) @0x\[a-f0-9\]+: [string_to_regexp $val].*$gdb_prompt $" {
  64             pass $test
  65         }
  66         -re "\\$\[0-9\]+ = $addr.*$gdb_prompt $" {
  67             fail "$test (prints just address)"
  68         }
  69         -re "\\$\[0-9\]+ = 0x\[a-f0-9\]+.*$gdb_prompt $" {
  70             fail "$test (prints unexpected address)"
  71         }
  72     }
  73     return 0
  74 }
  75
  76 proc test_p_x_addr { var addr } {
  77     global gdb_prompt
  78
  79     set test "print/x &$var"
  80     gdb_test_multiple $test $test {
  81         -re "\\$\[0-9\]+ = $addr.*$gdb_prompt $" {
  82             pass $test
  83         }
  84         -re "\\$\[0-9\]+ = 0x\[a-f0-9+\]+.*$gdb_prompt $" {
  85             fail "$test (prints unexpected address)"
  86         }
  87     }
  88     return 0
  89 }
  90
  91 proc test_p_x_ref_addr { var addr } {
  92     global gdb_prompt
  93
  94     set test "print/x *(&(&$var))"
  95     gdb_test_multiple $test $test {
  96         -re "\\$\[0-9\]+ = $addr.*$gdb_prompt $" {
  97             pass $test
  98         }
  99         -re "Attempt to take address of value not located in memory.*$gdb_prompt $" {
 100             # The reference might be in a register.  At least we parsed
 101             # correctly...
 102             pass $test
 103         }
 104         -re "\\$\[0-9\]+ = 0x\[a-f0-9+\]+.*$gdb_prompt $" {
 105             fail "$test (prints unexpected address)"
 106         }
 107     }
 108     return 0
 109 }
 110
 111 proc test_p_op1_equals_op2 {op1 op2} {
 112     set test "print $op1 == $op2"
 113     gdb_test $test "\\$\[0-9\]+ = true"
 114 }
 115
 116 gdb_exit
 117 gdb_start
 118 gdb_reinitialize_dir $srcdir/$subdir
 119 gdb_load ${binfile}
 120
 121 runto ${srcfile}:[gdb_get_line_number "marker here"]
 122
 123 set s1_address  [get_address "s1"]
 124 set e1_address  [get_address "e1"]
 125 set i1_address  [get_address "i1"]
 126
 127 test_p_x "s" "Struct1 &" "{x = 0xd, y = 0x13}" $s1_address
 128 test_p_x "e" "Enum1 &" "0xb" $e1_address
 129 test_p_x "i" "int &" "0x17" $i1_address
 130
 131 test_p_x_addr "s" $s1_address
 132 test_p_x_addr "e" $e1_address
 133 test_p_x_addr "i" $i1_address
 134
 135 test_p_x_ref_addr "s" $s1_address
 136 test_p_x_ref_addr "i" $i1_address
 137 test_p_x_ref_addr "e" $e1_address
 138
 139 test_p_op1_equals_op2 "s.x" "13"