binutils-gdb/gdb/testsuite/gdb.ada/mi_var_access.exp
Tom de Vries c5a72a8d1c [gdb/testsuite] Fix regexp in gdb.ada/mi_var_access.exp
With gcc-12 and target board unix/-m32, we run into:
...
(gdb) ^M
Expecting: ^(-var-create A_String_Access \* A_String_Access[^M
]+)?(\^done,name="A_String_Access",numchild="1",.*[^M
]+[(]gdb[)] ^M
[ ]*)
-var-create A_String_Access * A_String_Access^M
^error,msg="Value out of range."^M
(gdb) ^M
FAIL: gdb.ada/mi_var_access.exp: Create varobj (unexpected output)
...

What happens is easier to understand if we take things out of the mi context:
...
$ gdb -q -batch \
    outputs/gdb.ada/mi_var_access/mi_access \
    -ex "b mi_access.adb:19" \
    -ex run \
    -ex "p A_String_Access"
  ...
Breakpoint 1, mi_access () at mi_access.adb:19
19         A_String : String (3 .. 5) := "345"; -- STOP
$1 = (pck.string_access) <error reading variable: Value out of range.>
...
while with target board unix we have instead:
...
$1 = (pck.string_access) 0x431b40 <ada_main.sec_default_sized_stacks>
...

The var-create command samples the value of the variable at a location where
the variable is not yet initialized, and with target board unix we
accidentally hit a valid address, but with target board unix/-m32 that's not
the case.

Fix the FAIL by accepting the error message.

Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=28464
2022-06-14 11:06:26 +02:00

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# Copyright 2020-2022 Free Software Foundation, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
load_lib "ada.exp"
if {[skip_ada_tests]} {
return -1
}
standard_ada_testfile mi_access
load_lib mi-support.exp
set MIFLAGS "-i=mi"
if {[gdb_compile_ada "${srcfile}" "${binfile}" executable debug] != "" } {
return -1
}
mi_clean_restart $binfile
if {[mi_runto_main] < 0} {
return 0
}
set bp_location [gdb_get_line_number "STOP" ${testdir}/mi_access.adb]
mi_continue_to_line \
"mi_access.adb:$bp_location" \
"stop at start of mi_access"
# The bug was that creating a varobj for A_String_Access would crash.
set re_ok "\\^done,name=\"A_String_Access\",numchild=\"1\",.*"
set re_error "\\^error,msg=\"Value out of range\.\".*"
mi_gdb_test "-var-create A_String_Access * A_String_Access" \
"($re_ok|$re_error)" \
"Create varobj"
set bp_location [gdb_get_line_number "STOP2" ${testdir}/mi_access.adb]
mi_continue_to_line \
"mi_access.adb:$bp_location" \
"stop at stop 2"
mi_gdb_test "-var-update A_String_Access" \
[string_to_regexp {^done,changelist=[{name="A_String_Access",in_scope="true",type_changed="false",has_more="0"}]}] \
"update at stop 2"
mi_gdb_test "-var-list-children A_String_Access" \
[string_to_regexp {^done,numchild="1",children=[child={name="A_String_Access.A_String_Access.all",exp="A_String_Access.all",numchild="3",type="array (3 .. 5) of character",thread-id="1"}],has_more="0"}] \
"list children at stop 2"
set bp_location [gdb_get_line_number "STOP3" ${testdir}/mi_access.adb]
mi_continue_to_line \
"mi_access.adb:$bp_location" \
"stop at stop 3"
mi_gdb_test "-var-update A_String_Access" \
[string_to_regexp {^done,changelist=[{name="A_String_Access",in_scope="true",type_changed="true",new_type="pck.string_access",new_num_children="0",has_more="0"}]}] \
"update at stop 3"