1 # This testcase is part of GDB, the GNU debugger.
3 # Copyright 2002-2023 Free Software Foundation, Inc.
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; either version 3 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program. If not, see <http://www.gnu.org/licenses/>.
19 set executable $testfile
21 if { [prepare_for_testing "failed to prepare" $executable $srcfile] } {
26 # set it up at a breakpoint so we can play with the variable values
35 proc check_set { t l r new add } {
38 set prefix "var ${t} l"
39 gdb_test "tbreak wack_${t}"
41 set test "continue to wack_${t}"
42 gdb_test_multiple "continue" $test {
43 -re "register ${t} l = u, r = v;\r\n$gdb_prompt $" {
44 # See GCC PR debug/53948.
48 -re "l = add_${t} .l, r.;\r\n$gdb_prompt $" {
54 set test "${prefix}; print old l, expecting ${l}"
55 gdb_test_multiple "print l" "$test" {
56 -re -wrap " = <optimized out>" {
65 set test "${prefix}; print old r, expecting ${r}"
66 gdb_test_multiple "print r" "$test" {
67 -re -wrap " = <optimized out>" {
76 gdb_test_no_output "set variable l = 4" \
77 "${prefix}; setting l to 4"
78 gdb_test "print l" " = ${new}" \
79 "${prefix}; print new l, expecting ${new}"
81 gdb_test "next" "return l \\+ r;" \
82 "${prefix}; next over add call"
84 gdb_test "print l" " = ${add}" \
85 "${prefix}; print incremented l, expecting ${add}"
89 check_set "charest" "-1 .*" "-2 .*" "4 ..004." "2 ..002."
90 check_set "short" "-1" "-2" "4" "2"
91 check_set "int" "-1" "-2" "4" "2"
92 check_set "long" "-1" "-2" "4" "2"
93 check_set "longest" "-1" "-2" "4" "2"
94 check_set "float" "-1" "-2" "4" "2"
95 check_set "double" "-1" "-2" "4" "2"
96 check_set "doublest" "-1" "-2" "4" "2"
100 proc up_set { t l r new } {
103 set prefix "upvar ${t} l"
104 gdb_test "tbreak add_${t}"
105 gdb_test "continue" "return u . v;" \
106 "continue to add_${t}"
107 gdb_test "up" "l = add_${t} .l, r.;" \
111 set test "${prefix}; print old l, expecting ${l}"
112 gdb_test_multiple "print l" "$test" {
113 -re -wrap " = <optimized out>" {
117 -re -wrap " = ${l}" {
122 set test "${prefix}; print old r, expecting ${r}"
123 gdb_test_multiple "print r" "$test" {
124 -re -wrap " = <optimized out>" {
127 -re -wrap " = ${r}" {
132 if { $supported_l } {
133 gdb_test_no_output "set variable l = 4" \
134 "${prefix}; set l to 4"
135 gdb_test "print l" " = ${new}" \
136 "${prefix}; print new l, expecting ${new}"
140 up_set "charest" "-1 .*" "-2 .*" "4 ..004."
141 up_set "short" "-1" "-2" "4"
142 up_set "int" "-1" "-2" "4"
143 up_set "long" "-1" "-2" "4"
144 up_set "longest" "-1" "-2" "4"
145 up_set "float" "-1" "-2" "4"
146 up_set "double" "-1" "-2" "4"
147 up_set "doublest" "-1" "-2" "4"
151 proc check_struct { t old new } {
152 set prefix "var struct ${t} u"
153 gdb_test "tbreak wack_struct_${t}"
154 gdb_test "continue" "int i; register struct s_${t} u = z_${t};" \
155 "continue to wack_struct_${t}"
156 gdb_test "next 2" "add_struct_${t} .u.;" \
157 "${prefix}; next to add_struct_${t} call"
158 gdb_test "print u" " = ${old}" \
159 "${prefix}; print old u, expecting ${old}"
160 gdb_test_no_output "set variable u = s_${t}" \
161 "${prefix}; set u to s_${t}"
162 gdb_test "print u" " = ${new}" \
163 "${prefix}; print new u, expecting ${new}"
166 check_struct "1" "{s = \\{0}}" "{s = \\{1}}"
167 check_struct "2" "{s = \\{0, 0}}" "{s = \\{1, 2}}"
168 check_struct "3" "{s = \\{0, 0, 0}}" "{s = \\{1, 2, 3}}"
169 check_struct "4" "{s = \\{0, 0, 0, 0}}" "{s = \\{1, 2, 3, 4}}"
171 proc up_struct { t old new } {
172 set prefix "up struct ${t} u"
173 gdb_test "tbreak add_struct_${t}"
174 gdb_test "continue" "for .i = 0; i < sizeof .s. / sizeof .s.s.0..; i..." \
175 "continue to add_struct_${t}"
176 gdb_test "up" "u = add_struct_${t} .u.;" \
178 gdb_test "print u" " = ${old}" \
179 "${prefix}; print old u, expecting ${old}"
180 gdb_test_no_output "set variable u = s_${t}" \
181 "${prefix}; set u to s_${t}"
182 gdb_test "print u" " = ${new}" \
183 "${prefix}; print new u, expecting ${new}"
186 up_struct "1" "{s = \\{0}}" "{s = \\{1}}"
187 up_struct "2" "{s = \\{0, 0}}" "{s = \\{1, 2}}"
188 up_struct "3" "{s = \\{0, 0, 0}}" "{s = \\{1, 2, 3}}"
189 up_struct "4" "{s = \\{0, 0, 0, 0}}" "{s = \\{1, 2, 3, 4}}"
193 proc check_field { t } {
195 gdb_test "tbreak wack_field_${t}"
196 gdb_test "continue" "register struct f_${t} u = f_${t};" \
197 "continue field ${t}"
199 # Match either the return statement, or the line immediatly after
200 # it. The compiler can end up merging the return statement into
201 # the return instruction.
202 gdb_test "next" "(return u;|\})" "next field ${t}"
204 gdb_test "print u" " = {i = 1, j = 1, k = 1}" "old field ${t}"
205 gdb_test_no_output "set variable u = F_${t}"
206 gdb_test "print u" " = {i = 0, j = 0, k = 0}" "new field ${t}"
208 gdb_test_no_output "set variable u = F_${t}, u.i = f_${t}.i"
209 gdb_test "print u" " = {i = 1, j = 0, k = 0}" "f_${t}.i"
211 gdb_test_no_output "set variable u = F_${t}, u.j = f_${t}.j"
212 gdb_test "print u" " = {i = 0, j = 1, k = 0}" "f_${t}.j"
214 gdb_test_no_output "set variable u = F_${t}, u.k = f_${t}.k"
215 gdb_test "print u" " = {i = 0, j = 0, k = 1}" "f_${t}.k"
217 gdb_test_no_output "set variable u = f_${t}, u.i = F_${t}.i"
218 gdb_test "print u" " = {i = 0, j = 1, k = 1}" "F_${t}.i"
220 gdb_test_no_output "set variable u = f_${t}, u.j = F_${t}.j"
221 gdb_test "print u" " = {i = 1, j = 0, k = 1}" "F_${t}.j"
223 gdb_test_no_output "set variable u = f_${t}, u.k = F_${t}.k"
224 gdb_test "print u" " = {i = 1, j = 1, k = 0}" "F_${t}.k"
235 # WANTED: A fairly portable way of convincing the compiler to split a
236 # value across memory and registers.