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

   1 # Copyright 2007, 2008, 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 # 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 if $tracelevel then {
  31         strace $tracelevel
  32 }
  33
  34
  35 if { [skip_cplus_tests] } { continue }
  36
  37 set testfile "formatted-ref"
  38 set srcfile ${testfile}.cc
  39 set binfile ${objdir}/${subdir}/${testfile}
  40
  41 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug c++}] != "" } {
  42      untested formatted-ref.exp
  43      return -1
  44 }
  45
  46 proc get_address { var } {
  47     global expect_out
  48     global gdb_prompt
  49
  50     gdb_test_multiple "print &$var" "find address of $var" {
  51         -re "\\$\[0-9\]+ = \\(.*\\) (0x\[0-9a-f\]+).*$gdb_prompt $" {
  52             return $expect_out(1,string)
  53         }
  54         timeout {
  55             perror "couldn't find address of $var"
  56             return ""
  57         }
  58     }
  59     return ""
  60 }
  61
  62 proc test_p_x { var type val addr } {
  63     global gdb_prompt
  64
  65     set test "print/x $var"
  66     gdb_test_multiple $test $test {
  67         -re "\\$\[0-9\]+ = \\([string_to_regexp $type]\\) @0x\[a-f0-9\]+: [string_to_regexp $val].*$gdb_prompt $" {
  68             pass $test
  69         }
  70         -re "\\$\[0-9\]+ = $addr.*$gdb_prompt $" {
  71             fail "$test (prints just address)"
  72         }
  73         -re "\\$\[0-9\]+ = 0x\[a-f0-9\]+.*$gdb_prompt $" {
  74             fail "$test (prints unexpected address)"
  75         }
  76     }
  77     return 0
  78 }
  79
  80 proc test_p_x_addr { var addr } {
  81     global gdb_prompt
  82
  83     set test "print/x &$var"
  84     gdb_test_multiple $test $test {
  85         -re "\\$\[0-9\]+ = $addr.*$gdb_prompt $" {
  86             pass $test
  87         }
  88         -re "\\$\[0-9\]+ = 0x\[a-f0-9+\]+.*$gdb_prompt $" {
  89             fail "$test (prints unexpected address)"
  90         }
  91     }
  92     return 0
  93 }
  94
  95 proc test_p_x_ref_addr { var addr } {
  96     global gdb_prompt
  97
  98     set test "print/x *(&(&$var))"
  99     gdb_test_multiple $test $test {
 100         -re "\\$\[0-9\]+ = $addr.*$gdb_prompt $" {
 101             pass $test
 102         }
 103         -re "Attempt to take address of value not located in memory.*$gdb_prompt $" {
 104             # The reference might be in a register.  At least we parsed
 105             # correctly...
 106             pass $test
 107         }
 108         -re "\\$\[0-9\]+ = 0x\[a-f0-9+\]+.*$gdb_prompt $" {
 109             fail "$test (prints unexpected address)"
 110         }
 111     }
 112     return 0
 113 }
 114
 115 proc test_p_op1_equals_op2 {op1 op2} {
 116     set test "print $op1 == $op2"
 117     gdb_test $test "\\$\[0-9\]+ = true"
 118 }
 119
 120 gdb_exit
 121 gdb_start
 122 gdb_reinitialize_dir $srcdir/$subdir
 123 gdb_load ${binfile}
 124
 125 runto ${srcfile}:[gdb_get_line_number "marker here"]
 126
 127 set s1_address  [get_address "s1"]
 128 set e1_address  [get_address "e1"]
 129 set i1_address  [get_address "i1"]
 130
 131 test_p_x "s" "Struct1 &" "{x = 0xd, y = 0x13}" $s1_address
 132 test_p_x "e" "Enum1 &" "0xb" $e1_address
 133 test_p_x "i" "int &" "0x17" $i1_address
 134
 135 test_p_x_addr "s" $s1_address
 136 test_p_x_addr "e" $e1_address
 137 test_p_x_addr "i" $i1_address
 138
 139 test_p_x_ref_addr "s" $s1_address
 140 test_p_x_ref_addr "i" $i1_address
 141 test_p_x_ref_addr "e" $e1_address
 142
 143 test_p_op1_equals_op2 "s.x" "13"