/usr/bin/extend_dmalloc is in kdesdk-scripts 4:4.13.0-0ubuntu1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 | #! /usr/bin/env perl
#
# script to run gdb on return-addresses
# Usage: $0 malloc-log-file binary
#
# Copyright 1995 by Gray Watson
#
# This file is part of the dmalloc package.
#
# Permission to use, copy, modify, and distribute this software for
# any purpose and without fee is hereby granted, provided that the
# above copyright notice and this permission notice appear in all
# copies, and that the name of Gray Watson not be used in advertising
# or publicity pertaining to distribution of the document or software
# without specific, written prior permission.
#
# Gray Watson makes no representations about the suitability of the
# software described herein for any purpose. It is provided "as is"
# without express or implied warranty.
#
# The author may be contacted at gray.watson@letters.com
#
# $Id$
#
#
# Use this Perl script to run gdb and get information on the return-address
# (ra) addresses from a dmalloc logfile output. This will search for
# any ra= lines and will examine them and try to get the line number.
#
# NOTE: you may want to direct the output from the script to a file
# else gdb seems to prompt for a return like you are on the end of a
# page.
#
# Be sure to send me mail if there is an easier way to do all this.
#
###############################################################################
# usage message
#
if (@ARGV != 2 ) {
die "Usage: $0 dmalloc-log binary-that-generated-log\n";
}
$malloc = @ARGV[0];
$command = @ARGV[1];
@addresses = ();
open(malloc, $malloc);
while ( <malloc> ) {
if ($_ =~ m/ra=(0x[0-9a-fA-F]+)/) {
push(@addresses, $1);
}
}
close(malloc);
open(SORT, "|sort -u > $malloc.tmp");
foreach $address (@addresses) {
print SORT "$address\n";
}
close(SORT);
@addresses = ();
open(SORT, "< $malloc.tmp");
while ( <SORT> ) {
chomp $_;
push(@addresses, $_);
}
close(SORT);
unlink $malloc.tmp;
open (gdb, "|gdb -nx -q $command > $malloc.tmp") || die "Could not run gdb: $!\n";
$| = 1;
# get rid of the (gdb)
printf (gdb "set prompt\n");
printf (gdb "echo \\n\n");
# load in the shared libraries
printf (gdb "sharedlibrary\n");
# run the program to have _definitly_ the information
# we need from the shared libraries. Unfortunately gdb 4.18's
# version of sharedlibrary does nothing ;(
printf (gdb "b main\n");
printf (gdb "run\n");
foreach $address (@addresses) {
printf (gdb "echo -----------------------------------------------\\n\n");
# printf (gdb "echo Address = '%s'\n", $address);
printf (gdb "x %s\n", $address);
printf (gdb "info line *(%s)\n", $address);
}
printf (gdb "quit\ny\n");
# $| = 0;
close(gdb);
%lines = ();
open(malloc, "< $malloc.tmp");
$count = 0;
$address = "";
$line = "";
while ( <malloc> ) {
# ignore our own input
if ($_ =~ m/^x 0x/ || $_ =~ m/^echo ------/ || $_ =~ m/^info line/) {
next;
}
if ($_ =~ m/^--------/) {
if ($line) {
$lines{$address} = "$line";
}
$count = 0;
$address = "";
$line = "";
} else {
$count = $count + 1;
}
if ($count == 1 && $_ =~ m/(0x[0-9a-fA-F]+)\s*<(.*)>:\s*(\S+)/) {
$address = $1;
$line = "$2<$3>";
}
if ($count == 2 && $_ =~ m/Line ([0-9]+) of \"([^\"]*)\"/) {
$line = "$2:$1";
}
}
if ($line) {
$lines{$address} = "$line";
}
close(malloc);
open(malloc, $malloc);
while ( <malloc> ) {
if ($_ =~ m/ra=(0x[0-9a-fA-F]+)/) {
$address = $1;
if (defined($lines{$address})) {
$_ =~ s/ra=$address/$lines{$address}/;
print STDOUT $_;
} else {
print STDOUT $_;
}
} else {
print STDOUT $_;
}
}
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