ovldbreak.exp

gdb-6.8 Linux下的调试程序 最新版本

# Copyright (C) 1998, 1999, 2001, 2004, 2007, 2008
# 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/>.

# written by Elena Zannoni ([e-mail])
# modified by Michael Chastain ([e-mail])

# This file is part of the gdb testsuite
#
# tests for overloaded member functions. Set breakpoints on
# overloaded member functions
#


if $tracelevel then {
        strace $tracelevel
        }

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

if { [skip_cplus_tests] } { continue }

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

if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug c++}] != "" } {
     untested ovldbreak.exp
     return -1
}

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

# set it up at a breakpoint so we can play with the variable values
#
if ![runto_main] then {
    perror "couldn't run to breakpoint"
    continue
}



# When I ask gdb to set a breakpoint on an overloaded function,
# gdb gives me a choice menu.  I might get stuck in that choice menu
# (for example, if C++ name mangling is not working properly).
#
# This procedure issues a command that works at either the menu
# prompt or the command prompt to get back to the command prompt.
#
# Note that an empty line won't do it (it means 'repeat the previous command'
# at top level).  A line with a single space in it works nicely.

proc take_gdb_out_of_choice_menu {} {
    global gdb_prompt
    send_gdb " \n"
    gdb_expect {
        -re ".*$gdb_prompt $" {
        }
        timeout {
            perror "could not resynchronize to command prompt (timeout)"
            continue
        }
    }
}



# This procedure sets an overloaded breakpoint.
# When I ask for such a breakpoint, gdb gives me a menu of 'cancel' 'all'
# and a bunch of choices.  I then choose from that menu by number.

proc set_bp_overloaded {name expectedmenu mychoice bpnumber linenumber} {
    global gdb_prompt hex srcfile

    # Get into the overload menu.
    send_gdb "break $name\n"
    gdb_expect {
        -re "$expectedmenu" {
            pass "bp menu for $name choice $mychoice"

            # Choose my choice.
            send_gdb "$mychoice\n"
            gdb_expect {
                -re "Breakpoint $bpnumber at $hex: file.*$srcfile, line $linenumber.\r\n$gdb_prompt $" {
                    pass "set bp $bpnumber on $name $mychoice line $linenumber"
                }
                -re ".*$gdb_prompt $" {
                    fail "set bp $bpnumber on $name $mychoice line $linenumber (bad bp)"
                }
                timeout {
                    fail "set bp $bpnumber on $name $mychoice line $linenumber (timeout)"
                    take_gdb_out_of_choice_menu
                }
            }
        }
        -re ".*\r\n> " {
            fail "bp menu for $name choice $mychoice (bad menu)"
            take_gdb_out_of_choice_menu
        }
        -re ".*$gdb_prompt $" {
            fail "bp menu for $name choice $mychoice (no menu)"
        }
        timeout {
            fail "bp menu for $name choice $mychoice (timeout)"
            take_gdb_out_of_choice_menu
        }
    }
}

# This is the expected menu for overload1arg.
# Note the arg type variations on lines 6 and 13.
# This accommodates different versions of g++.

set menu_overload1arg "\\\[0\\\] cancel\r\n\\\[1\\\] all\r\n\\\[2\\\] foo::overload1arg\\(double\\) at.*$srcfile:121\r\n\\\[3\\\] foo::overload1arg\\(float\\) at.*$srcfile:120\r\n\\\[4\\\] foo::overload1arg\\(unsigned long\\) at.*$srcfile:119\r\n\\\[5\\\] foo::overload1arg\\(long\\) at.*$srcfile:118\r\n\\\[6\\\] foo::overload1arg\\((unsigned int|unsigned)\\) at.*$srcfile:117\r\n\\\[7\\\] foo::overload1arg\\(int\\) at.*$srcfile:116\r\n\\\[8\\\] foo::overload1arg\\(unsigned short\\) at.*$srcfile:115\r\n\\\[9\\\] foo::overload1arg\\(short\\) at.*$srcfile:114\r\n\\\[10\\\] foo::overload1arg\\(unsigned char\\) at.*$srcfile:113\r\n\\\[11\\\] foo::overload1arg\\(signed char\\) at.*$srcfile:112\r\n\\\[12\\\] foo::overload1arg\\(char\\) at.*$srcfile:111\r\n\\\[13\\\] foo::overload1arg\\((void|)\\) at.*$srcfile:110\r\n> $"



# Set breakpoints on foo::overload1arg, one by one.

set_bp_overloaded "foo::overload1arg" "$menu_overload1arg" 12    2 111
set_bp_overloaded "foo::overload1arg" "$menu_overload1arg" 11    3 112
set_bp_overloaded "foo::overload1arg" "$menu_overload1arg" 10    4 113
set_bp_overloaded "foo::overload1arg" "$menu_overload1arg"  9    5 114
set_bp_overloaded "foo::overload1arg" "$menu_overload1arg"  8    6 115
set_bp_overloaded "foo::overload1arg" "$menu_overload1arg"  7    7 116
set_bp_overloaded "foo::overload1arg" "$menu_overload1arg"  6    8 117
set_bp_overloaded "foo::overload1arg" "$menu_overload1arg"  5    9 118
set_bp_overloaded "foo::overload1arg" "$menu_overload1arg"  4   10 119
set_bp_overloaded "foo::overload1arg" "$menu_overload1arg"  3   11 120
set_bp_overloaded "foo::overload1arg" "$menu_overload1arg"  2   12 121
set_bp_overloaded "foo::overload1arg" "$menu_overload1arg" 13   13 110



# Verify the breakpoints.

gdb_test "info break" \
    "Num     Type\[\t \]+Disp Enb Address\[\t \]+What.*
\[0-9\]+\[\t \]+breakpoint     keep y\[\t \]+$hex\[\t \]+in main at.*$srcfile:49\r
\[\t \]+breakpoint already hit 1 time\r
\[0-9\]+\[\t \]+breakpoint     keep y\[\t \]+$hex\[\t \]+in foo::overload1arg\\(char\\) at.*$srcfile:111\r
\[0-9\]+\[\t \]+breakpoint     keep y\[\t \]+$hex\[\t \]+in foo::overload1arg\\(signed char\\) at.*$srcfile:112\r
\[0-9\]+\[\t \]+breakpoint     keep y\[\t \]+$hex\[\t \]+in foo::overload1arg\\(unsigned char\\) at.*$srcfile:113\r
\[0-9\]+\[\t \]+breakpoint     keep y\[\t \]+$hex\[\t \]+in foo::overload1arg\\(short\\) at.*$srcfile:114\r
\[0-9\]+\[\t \]+breakpoint     keep y\[\t \]+$hex\[\t \]+in foo::overload1arg\\(unsigned short\\) at.*$srcfile:115\r
\[0-9\]+\[\t \]+breakpoint     keep y\[\t \]+$hex\[\t \]+in foo::overload1arg\\(int\\) at.*$srcfile:116\r
\[0-9\]+\[\t \]+breakpoint     keep y\[\t \]+$hex\[\t \]+in foo::overload1arg\\((unsigned|unsigned int)\\) at.*$srcfile:117\r
\[0-9\]+\[\t \]+breakpoint     keep y\[\t \]+$hex\[\t \]+in foo::overload1arg\\(long\\) at.*$srcfile:118\r
\[0-9\]+\[\t \]+breakpoint     keep y\[\t \]+$hex\[\t \]+in foo::overload1arg\\(unsigned long\\) at.*$srcfile:119\r
\[0-9\]+\[\t \]+breakpoint     keep y\[\t \]+$hex\[\t \]+in foo::overload1arg\\(float\\) at.*$srcfile:120\r
\[0-9\]+\[\t \]+breakpoint     keep y\[\t \]+$hex\[\t \]+in foo::overload1arg\\(double\\) at.*$srcfile:121\r
\[0-9\]+\[\t \]+breakpoint     keep y\[\t \]+$hex\[\t \]+in foo::overload1arg\\((void|)\\) at.*$srcfile:110" \
    "breakpoint info (after setting one-by-one)"



# Test choice "cancel".
# This is copy-and-paste from set_bp_overloaded.

send_gdb "break foo::overload1arg\n" 
gdb_expect {