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

   1 # Copyright 2007-2016 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 standard_testfile .cc
  34
  35 if {[prepare_for_testing "failed to prepare" $testfile $srcfile {debug c++}]} {
  36     return -1
  37 }
  38
  39 proc get_address { var } {
  40     global expect_out
  41     global gdb_prompt
  42
  43     gdb_test_multiple "print &$var" "find address of $var" {
  44         -re "\\$\[0-9\]+ = \\(.*\\) (0x\[0-9a-f\]+).*$gdb_prompt $" {
  45             return $expect_out(1,string)
  46         }
  47         timeout {
  48             perror "couldn't find address of $var"
  49             return ""
  50         }
  51     }
  52     return ""
  53 }
  54
  55 proc test_p_x { var type val addr } {
  56     global gdb_prompt
  57
  58     set test "print/x $var"
  59     gdb_test_multiple $test $test {
  60         -re "\\$\[0-9\]+ = \\([string_to_regexp $type]\\) @0x\[a-f0-9\]+: [string_to_regexp $val].*$gdb_prompt $" {
  61             pass $test
  62         }
  63         -re "\\$\[0-9\]+ = $addr.*$gdb_prompt $" {
  64             fail "$test (prints just address)"
  65         }
  66         -re "\\$\[0-9\]+ = 0x\[a-f0-9\]+.*$gdb_prompt $" {
  67             fail "$test (prints unexpected address)"
  68         }
  69     }
  70     return 0
  71 }
  72
  73 proc test_p_x_addr { var addr } {
  74     global gdb_prompt
  75
  76     set test "print/x &$var"
  77     gdb_test_multiple $test $test {
  78         -re "\\$\[0-9\]+ = $addr.*$gdb_prompt $" {
  79             pass $test
  80         }
  81         -re "\\$\[0-9\]+ = 0x\[a-f0-9+\]+.*$gdb_prompt $" {
  82             fail "$test (prints unexpected address)"
  83         }
  84     }
  85     return 0
  86 }
  87
  88 proc test_p_x_ref_addr { var addr } {
  89     global gdb_prompt
  90
  91     set test "print/x *(&(&$var))"
  92     gdb_test_multiple $test $test {
  93         -re "\\$\[0-9\]+ = $addr.*$gdb_prompt $" {
  94             pass $test
  95         }
  96         -re "Attempt to take address of value not located in memory.*$gdb_prompt $" {
  97             # The reference might be in a register.  At least we parsed
  98             # correctly...
  99             pass $test
 100         }
 101         -re "\\$\[0-9\]+ = 0x\[a-f0-9+\]+.*$gdb_prompt $" {
 102             fail "$test (prints unexpected address)"
 103         }
 104     }
 105     return 0
 106 }
 107
 108 proc test_p_op1_equals_op2 {op1 op2} {
 109     set test "print $op1 == $op2"
 110     gdb_test $test "\\$\[0-9\]+ = true"
 111 }
 112
 113 runto ${srcfile}:[gdb_get_line_number "marker here"]
 114
 115 set s1_address  [get_address "s1"]
 116 set e1_address  [get_address "e1"]
 117 set i1_address  [get_address "i1"]
 118
 119 test_p_x "s" "Struct1 &" "{x = 0xd, y = 0x13}" $s1_address
 120 test_p_x "e" "Enum1 &" "0xb" $e1_address
 121 test_p_x "i" "int &" "0x17" $i1_address
 122
 123 test_p_x_addr "s" $s1_address
 124 test_p_x_addr "e" $e1_address
 125 test_p_x_addr "i" $i1_address
 126
 127 test_p_x_ref_addr "s" $s1_address
 128 test_p_x_ref_addr "i" $i1_address
 129 test_p_x_ref_addr "e" $e1_address
 130
 131 test_p_op1_equals_op2 "s.x" "13"