rtti.exp

gdb-6.0 linux 下的调试工具

# 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.  

# This file is part of the gdb testsuite.

# This contains tests for GDB's use of RTTI information.  This stems
# from a bug reported in PR gdb/488 and other places, which leads to
# statements like 'warning: can't find class named 'C::D', as given by
# C++ RTTI'.  It arises from GDB not knowing about classes that are
# defined in namespaces.

# NOTE: carlton/2003-05-16: I suspect it could arise from nested class
# issues, too, and even once we fix that, there might be situations
# (involving templates, in particular) where this problem triggers
# because GDB and GCC have different ideas what a class is called.

if $tracelevel then {
        strace $tracelevel
        }

if { [skip_cplus_tests] } { continue }

#
# test running programs
#
set prms_id 0
set bug_id 0

set testfile "rtti"
set srcfile1 "${srcdir}/${subdir}/${testfile}1.cc"
set objfile1 "${objdir}/${subdir}/${testfile}1.o"
set srcfile2 "${srcdir}/${subdir}/${testfile}2.cc"
set objfile2 "${objdir}/${subdir}/${testfile}2.o"
set binfile ${objdir}/${subdir}/${testfile}

# gdb_get_line_number needs this to be called srcfile.
set srcfile "${srcfile1}"

if  { [gdb_compile "${srcfile1}" "${objfile1}" object {debug c++}] != "" } {
     gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
}

if  { [gdb_compile "${srcfile2}" "${objfile2}" object {debug c++}] != "" } {
     gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
}

if  { [gdb_compile "${objfile1} ${objfile2}" "${binfile}" executable {debug c++}] != "" } {
     gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
}

if [get_compiler_info ${binfile} "c++"] {
    return -1
}

gdb_exit
gdb_start
gdb_reinitialize_dir $srcdir/$subdir
gdb_load ${binfile}


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

# First, run to after we've constructed the object:

gdb_breakpoint [gdb_get_line_number "constructs-done"]
gdb_continue_to_breakpoint "end of constructors"

gdb_test_multiple "print *e1" "print *e1" {
    -re "warning: can't find class named `n1::D1', as given by C\\+\\+ RTTI.*$gdb_prompt $" {
	kfail "gdb/488" "print *e1"
    }
    -re "\\$\[0-9\]* = {<n1::Base1> = .*}\r\n$gdb_prompt $" {
	pass "print *e1"
    }
    -re "\\$\[0-9\]* = {<Base1> = .*}\r\n$gdb_prompt $" {
	# NOTE: carlton/2003-05-16: If code is compiled by GCC2, we
	# don't print the warning (for no particular reason), but we
	# still call the class via the wrong name; PR gdb/57 is our
	# catch-all PR for nested type problems.
	kfail "gdb/57" "print *e1"
    }
}

# NOTE: carlton/2003-05-16: This test fails on my branch with an
# "<incomplete type>" message because, within rtt1.cc, GDB has no way
# of knowing that the class is called 'n2::D2' instead of just 'D2'.
# This is an artifical test case, though: if we were using these
# classes in a more substantial way, G++ would emit more debug info.
# As is, I don't think there's anything that GDB can do about this
# case until G++ starts emitting DW_TAG_namespace info; when that part
# of the branch gets merged in, then we'll probably want to convert
# that fail branch to an xfail.

gdb_test_multiple "print *e2" "print *e2" {
    -re "warning: can't find class named `n2::D2', as given by C\\+\\+ RTTI.*$gdb_prompt $" {
	kfail "gdb/488" "print *e2"
    }
    -re "\\$\[0-9\]* = <incomplete type>\r\n$gdb_prompt $" {
	# See above NOTE.
	fail "print *e2"
    }
    -re "\\$\[0-9\]* = {<n2::Base2> = .*}\r\n$gdb_prompt $" {
	pass "print *e2"
    }
    -re "\\$\[0-9\]* = {<Base2> = .*}\r\n$gdb_prompt $" {
	kfail "gdb/57" "print *e2"
    }
}

gdb_exit
return 0