class2.exp

这个是LINUX下的GDB调度工具的源码

# Copyright 2003, 2004 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.  

if $tracelevel then {
    strace $tracelevel
    }

if { [skip_cplus_tests] } { continue }

set prms_id 0
set bug_id 0

set testfile "class2"
set srcfile ${testfile}.cc
set binfile ${objdir}/${subdir}/${testfile}

# Create and source the file that provides information about the compiler
# used to compile the test case.
if [get_compiler_info ${binfile} "c++"] {
    return -1
}

if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug c++}] != "" } {
    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}

# Start with "set print object off".

gdb_test "set print object off" ""

if ![runto_main] then {
    perror "couldn't run to main"
    continue
}

get_debug_format

gdb_test "break [gdb_get_line_number "marker return 0"]" \
    "Breakpoint.*at.* file .*" ""

gdb_test "continue" "Breakpoint .* at .*" ""

# Access the "A" object.

gdb_test "print alpha" \
    "= {.*a1 = 100.*}" \
    "print alpha at marker return 0"

# Access the "B" object.

gdb_test "print beta" \
    "= {.*a1 = 200.*b1 = 201.*b2 = 202}" \
    "print beta at marker return 0"

# Access the "A" object through an "A *" pointer.

gdb_test_multiple "print * aap" "print * aap at marker return 0" {
    -re "= {.*a1 = 100.*}\r\n$gdb_prompt $" {
	# gcc 2.95.3 -gstabs+
	# gcc 3.3.2 -gdwarf-2
	# gcc 3.3.2 -gstabs+
	pass "print * aap at marker return 0"
    }
    -re "= {.*a1 = .*}\r\n$gdb_prompt $" {
	if { [test_compiler_info gcc-2-*] && [test_debug_format "DWARF 2"] } {
	    # gcc 2.95.3 -gdwarf-2
	    setup_kfail "gdb/1465" "*-*-*"
	}
	fail "print * aap at marker return 0"
    }
}

# Access the "B" object through a "B *" pointer.

gdb_test "print * bbp" \
    "= {.*a1 = 200.*b1 = 201.*b2 = 202}" \
    "print * bbp at marker return 0"

# Access the "B" object through an "A *" pointer.
# This should print using the "A" type.

gdb_test_multiple "print * abp" "print * abp at marker return 0, s-p-o off" {
    -re "= {.*a1 = 200.*b1 = .*b2 = .*}\r\n$gdb_prompt $" {
	# This would violate the documentation for "set print object off".
	fail "print * abp at marker return 0, s-p-o off"
    }
    -re "= {.*a1 = 200.*}\r\n$gdb_prompt $" {
	pass "print * abp at marker return 0, s-p-o off"
    }
}

# Access the "B" object through a "B *" pointer expression.
# This should print using the "B" type.

gdb_test "print * (B *) abp" \
    "= {.*a1 = 200.*b1 = 201.*b2 = 202}" \
    "print * (B *) abp at marker return 0"

# Printing the value of an object containing no data fields:

gdb_test "p e" "= \{<No data fields>\}" "print object with no data fields"