1 # This testcase is part of GDB, the GNU debugger.
3 # Copyright 2002-2021 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] } {
25 if [get_compiler_info] {
30 # set it up at a breakpoint so we can play with the variable values
33 if ![runto_main] then {
34 perror "couldn't run to breakpoint"
40 proc check_set { t l r new add } {
43 set prefix "var ${t} l"
44 gdb_test "tbreak wack_${t}"
46 set test "continue to wack_${t}"
47 gdb_test_multiple "continue" $test {
48 -re "register ${t} l = u, r = v;\r\n$gdb_prompt $" {
49 # See GCC PR debug/53948.
53 -re "l = add_${t} .l, r.;\r\n$gdb_prompt $" {
59 set test "${prefix}; print old l, expecting ${l}"
60 gdb_test_multiple "print l" "$test" {
61 -re -wrap " = <optimized out>" {
70 set test "${prefix}; print old r, expecting ${r}"
71 gdb_test_multiple "print r" "$test" {
72 -re -wrap " = <optimized out>" {
81 gdb_test_no_output "set variable l = 4" \
82 "${prefix}; setting l to 4"
83 gdb_test "print l" " = ${new}" \
84 "${prefix}; print new l, expecting ${new}"
86 gdb_test "next" "return l \\+ r;" \
87 "${prefix}; next over add call"
89 gdb_test "print l" " = ${add}" \
90 "${prefix}; print incremented l, expecting ${add}"
94 check_set "charest" "-1 .*" "-2 .*" "4 ..004." "2 ..002."
95 check_set "short" "-1" "-2" "4" "2"
96 check_set "int" "-1" "-2" "4" "2"
97 check_set "long" "-1" "-2" "4" "2"
98 check_set "longest" "-1" "-2" "4" "2"
99 check_set "float" "-1" "-2" "4" "2"
100 check_set "double" "-1" "-2" "4" "2"
101 check_set "doublest" "-1" "-2" "4" "2"
105 proc up_set { t l r new } {
108 set prefix "upvar ${t} l"
109 gdb_test "tbreak add_${t}"
110 gdb_test "continue" "return u . v;" \
111 "continue to add_${t}"
112 gdb_test "up" "l = add_${t} .l, r.;" \
116 set test "${prefix}; print old l, expecting ${l}"
117 gdb_test_multiple "print l" "$test" {
118 -re -wrap " = <optimized out>" {
122 -re -wrap " = ${l}" {
127 set test "${prefix}; print old r, expecting ${r}"
128 gdb_test_multiple "print r" "$test" {
129 -re -wrap " = <optimized out>" {
132 -re -wrap " = ${r}" {
137 if { $supported_l } {
138 gdb_test_no_output "set variable l = 4" \
139 "${prefix}; set l to 4"
140 gdb_test "print l" " = ${new}" \
141 "${prefix}; print new l, expecting ${new}"
145 up_set "charest" "-1 .*" "-2 .*" "4 ..004."
146 up_set "short" "-1" "-2" "4"
147 up_set "int" "-1" "-2" "4"
148 up_set "long" "-1" "-2" "4"
149 up_set "longest" "-1" "-2" "4"
150 up_set "float" "-1" "-2" "4"
151 up_set "double" "-1" "-2" "4"
152 up_set "doublest" "-1" "-2" "4"
156 proc check_struct { t old new } {
157 set prefix "var struct ${t} u"
158 gdb_test "tbreak wack_struct_${t}"
159 gdb_test "continue" "int i; register struct s_${t} u = z_${t};" \
160 "continue to wack_struct_${t}"
161 gdb_test "next 2" "add_struct_${t} .u.;" \
162 "${prefix}; next to add_struct_${t} call"
163 gdb_test "print u" " = ${old}" \
164 "${prefix}; print old u, expecting ${old}"
165 gdb_test_no_output "set variable u = s_${t}" \
166 "${prefix}; set u to s_${t}"
167 gdb_test "print u" " = ${new}" \
168 "${prefix}; print new u, expecting ${new}"
171 check_struct "1" "{s = \\{0}}" "{s = \\{1}}"
172 check_struct "2" "{s = \\{0, 0}}" "{s = \\{1, 2}}"
173 check_struct "3" "{s = \\{0, 0, 0}}" "{s = \\{1, 2, 3}}"
174 check_struct "4" "{s = \\{0, 0, 0, 0}}" "{s = \\{1, 2, 3, 4}}"
176 proc up_struct { t old new } {
177 set prefix "up struct ${t} u"
178 gdb_test "tbreak add_struct_${t}"
179 gdb_test "continue" "for .i = 0; i < sizeof .s. / sizeof .s.s.0..; i..." \
180 "continue to add_struct_${t}"
181 gdb_test "up" "u = add_struct_${t} .u.;" \
183 gdb_test "print u" " = ${old}" \
184 "${prefix}; print old u, expecting ${old}"
185 gdb_test_no_output "set variable u = s_${t}" \
186 "${prefix}; set u to s_${t}"
187 gdb_test "print u" " = ${new}" \
188 "${prefix}; print new u, expecting ${new}"
191 up_struct "1" "{s = \\{0}}" "{s = \\{1}}"
192 up_struct "2" "{s = \\{0, 0}}" "{s = \\{1, 2}}"
193 up_struct "3" "{s = \\{0, 0, 0}}" "{s = \\{1, 2, 3}}"
194 up_struct "4" "{s = \\{0, 0, 0, 0}}" "{s = \\{1, 2, 3, 4}}"
198 proc check_field { t } {
200 gdb_test "tbreak wack_field_${t}"
201 gdb_test "continue" "register struct f_${t} u = f_${t};" \
202 "continue field ${t}"
204 # Match either the return statement, or the line immediatly after
205 # it. The compiler can end up merging the return statement into
206 # the return instruction.
207 gdb_test "next" "(return u;|\})" "next field ${t}"
209 gdb_test "print u" " = {i = 1, j = 1, k = 1}" "old field ${t}"
210 gdb_test_no_output "set variable u = F_${t}"
211 gdb_test "print u" " = {i = 0, j = 0, k = 0}" "new field ${t}"
213 gdb_test_no_output "set variable u = F_${t}, u.i = f_${t}.i"
214 gdb_test "print u" " = {i = 1, j = 0, k = 0}" "f_${t}.i"
216 gdb_test_no_output "set variable u = F_${t}, u.j = f_${t}.j"
217 gdb_test "print u" " = {i = 0, j = 1, k = 0}" "f_${t}.j"
219 gdb_test_no_output "set variable u = F_${t}, u.k = f_${t}.k"
220 gdb_test "print u" " = {i = 0, j = 0, k = 1}" "f_${t}.k"
222 gdb_test_no_output "set variable u = f_${t}, u.i = F_${t}.i"
223 gdb_test "print u" " = {i = 0, j = 1, k = 1}" "F_${t}.i"
225 gdb_test_no_output "set variable u = f_${t}, u.j = F_${t}.j"
226 gdb_test "print u" " = {i = 1, j = 0, k = 1}" "F_${t}.j"
228 gdb_test_no_output "set variable u = f_${t}, u.k = F_${t}.k"
229 gdb_test "print u" " = {i = 1, j = 1, k = 0}" "F_${t}.k"
240 # WANTED: A fairly portable way of convincing the compiler to split a
241 # value across memory and registers.