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pending/1093: [rfa] new test, pr-1090.exp, multi-register variables
- From: Michael Elizabeth Chastain <mec at shout dot net>
- To: gdb-gnats at sources dot redhat dot com
- Date: Sun, 23 Feb 2003 21:55:44 -0600
- Subject: pending/1093: [rfa] new test, pr-1090.exp, multi-register variables
>Number: 1093
>Category: pending
>Synopsis: [rfa] new test, pr-1090.exp, multi-register variables
>Confidential: yes
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: change-request
>Submitter-Id: unknown
>Arrival-Date: Tue Feb 25 16:08:01 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator:
>Release:
>Organization:
>Environment:
>Description:
This is a new test script for pr gdb/1090, which is about register
variables which occupy several registers. Both gdb 5.3 and gdb
HEAD%20030223 get this wrong. In my testbed, this happens with
gcc 2.95.3; gcc v3 compilers don't allocate multi-register variables.
The symptom of this bug is that gdb prints the first word of a
structure correctly but botches the second word. The test has a nice
KFAIL for this.
Okay to commit?
Michael C
=== pr-1090.c
/* Test program for multi-register variable.
Copyright 2003 Free Software Foundation, Inc.
This file is part of the gdb testsuite.
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 2 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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
This file was written by Michael Elizabeth Chastain (mec at shout dot net). */
struct s_2_by_4
{
int field_0;
int field_1;
};
void marker (struct s_2_by_4 s_whatever)
{
s_whatever = s_whatever;
return;
}
void foo ()
{
/* I want this variable in a register but I can't really force it */
register struct s_2_by_4 s24;
s24.field_0 = 1170;
s24.field_1 = 64701;
marker (s24);
return;
}
int main ()
{
foo ();
}
=== pr-1090.exp
# Copyright 2003 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 2 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, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
# Tests for PR gdb/1090.
# 2003-02-23 Michael Chastain <mec at shout dot net>
# This file is part of the gdb testsuite.
if $tracelevel then {
strace $tracelevel
}
#
# test running programs
#
set prms_id 0
set bug_id 0
set testfile "pr-1090"
set srcfile ${testfile}.c
set binfile ${objdir}/${subdir}/${testfile}
if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
}
gdb_exit
gdb_start
gdb_reinitialize_dir $srcdir/$subdir
gdb_load ${binfile}
if ![runto marker] then {
perror "couldn't run to breakpoint"
continue
}
gdb_test "up" ".*foo.*" "up from marker"
send_gdb "print s24\n"
gdb_expect {
-re "\\\$\[0-9\]* = \\{field_0 = 1170, field_1 = 64701\\}\r\n$gdb_prompt $" {
pass "print s24"
}
-re "\\\$\[0-9\]* = \\{field_0 = 1170, field_1 = .*\\}\r\n$gdb_prompt $" {
# happens with gcc 2.95.3, which actually puts s24 in registers.
# gdb cannot find the second register and prints garbage.
kfail "gdb/1090" "print s24"
}
-re ".*$gdb_prompt $" {
fail "print s24"
}
timeout {
fail "print s24 (timeout)"
}
}
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>Fix:
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>Audit-Trail:
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