1 # Copyright 2007, 2008, 2009 Free Software Foundation, Inc.
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.
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.
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/>.
16 # Author: P. N. Hilfinger, AdaCore, Inc.
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
37 if { [skip_cplus_tests] } { continue }
39 set testfile "formatted-ref"
40 set srcfile ${testfile}.cc
41 set binfile ${objdir}/${subdir}/${testfile}
43 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug c++}] != "" } {
44 untested formatted-ref.exp
48 proc get_address { var } {
52 send_gdb "print &$var\n"
54 -re "\\$\[0-9\]+ = \\(.*\\) (0x\[0-9a-f\]+).*$gdb_prompt $" {
55 return $expect_out(1,string)
58 perror "couldn't find address of $var"
64 proc test_p_x { var type val addr } {
67 set test "print/x $var"
68 gdb_test_multiple $test $test {
69 -re "\\$\[0-9\]+ = \\([string_to_regexp $type]\\) @0x\[a-f0-9\]+: [string_to_regexp $val].*$gdb_prompt $" {
72 -re "\\$\[0-9\]+ = $addr.*$gdb_prompt $" {
73 fail "$test (prints just address)"
75 -re "\\$\[0-9\]+ = 0x\[a-f0-9\]+.*$gdb_prompt $" {
76 fail "$test (prints unexpected address)"
82 proc test_p_x_addr { var addr } {
85 set test "print/x &$var"
86 gdb_test_multiple $test $test {
87 -re "\\$\[0-9\]+ = $addr.*$gdb_prompt $" {
90 -re "\\$\[0-9\]+ = 0x\[a-f0-9+\]+.*$gdb_prompt $" {
91 fail "$test (prints unexpected address)"
97 proc test_p_x_ref_addr { var addr } {
100 set test "print/x *(&(&$var))"
101 gdb_test_multiple $test $test {
102 -re "\\$\[0-9\]+ = $addr.*$gdb_prompt $" {
105 -re "Attempt to take address of value not located in memory.*$gdb_prompt $" {
106 # The reference might be in a register. At least we parsed
110 -re "\\$\[0-9\]+ = 0x\[a-f0-9+\]+.*$gdb_prompt $" {
111 fail "$test (prints unexpected address)"
117 proc test_p_op1_equals_op2 {op1 op2} {
118 set test "print $op1 == $op2"
119 gdb_test $test "\\$\[0-9\]+ = true"
124 gdb_reinitialize_dir $srcdir/$subdir
127 runto ${srcfile}:[gdb_get_line_number "marker here"]
129 set s1_address [get_address "s1"]
130 set e1_address [get_address "e1"]
131 set i1_address [get_address "i1"]
133 test_p_x "s" "Struct1 &" "{x = 0xd, y = 0x13}" $s1_address
134 test_p_x "e" "Enum1 &" "0xb" $e1_address
135 test_p_x "i" "int &" "0x17" $i1_address
137 test_p_x_addr "s" $s1_address
138 test_p_x_addr "e" $e1_address
139 test_p_x_addr "i" $i1_address
141 test_p_x_ref_addr "s" $s1_address
142 test_p_x_ref_addr "i" $i1_address
143 test_p_x_ref_addr "e" $e1_address
145 test_p_op1_equals_op2 "s.x" "13"