Avoid array-bounds warning for strncat on i586 (bug 20260)
[glibc.git] / malloc / mtrace.pl
blob3715a7f8309f0932a324549095772f646c2196a2
1 #! @PERL@
2 eval "exec @PERL@ -S $0 $@"
3 if 0;
4 # Copyright (C) 1997-2016 Free Software Foundation, Inc.
5 # This file is part of the GNU C Library.
6 # Contributed by Ulrich Drepper <drepper@gnu.org>, 1997.
7 # Based on the mtrace.awk script.
9 # The GNU C Library is free software; you can redistribute it and/or
10 # modify it under the terms of the GNU Lesser General Public
11 # License as published by the Free Software Foundation; either
12 # version 2.1 of the License, or (at your option) any later version.
14 # The GNU C Library is distributed in the hope that it will be useful,
15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 # Lesser General Public License for more details.
19 # You should have received a copy of the GNU Lesser General Public
20 # License along with the GNU C Library; if not, see
21 # <http://www.gnu.org/licenses/>.
23 $VERSION = "@VERSION@";
24 $PKGVERSION = "@PKGVERSION@";
25 $REPORT_BUGS_TO = '@REPORT_BUGS_TO@';
26 $progname = $0;
28 sub usage {
29 print "Usage: mtrace [OPTION]... [Binary] MtraceData\n";
30 print " --help print this help, then exit\n";
31 print " --version print version number, then exit\n";
32 print "\n";
33 print "For bug reporting instructions, please see:\n";
34 print "$REPORT_BUGS_TO.\n";
35 exit 0;
38 # We expect two arguments:
39 # #1: the complete path to the binary
40 # #2: the mtrace data filename
41 # The usual options are also recognized.
43 arglist: while (@ARGV) {
44 if ($ARGV[0] eq "--v" || $ARGV[0] eq "--ve" || $ARGV[0] eq "--ver" ||
45 $ARGV[0] eq "--vers" || $ARGV[0] eq "--versi" ||
46 $ARGV[0] eq "--versio" || $ARGV[0] eq "--version") {
47 print "mtrace $PKGVERSION$VERSION\n";
48 print "Copyright (C) 2016 Free Software Foundation, Inc.\n";
49 print "This is free software; see the source for copying conditions. There is NO\n";
50 print "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n";
51 print "Written by Ulrich Drepper <drepper\@gnu.org>\n";
53 exit 0;
54 } elsif ($ARGV[0] eq "--h" || $ARGV[0] eq "--he" || $ARGV[0] eq "--hel" ||
55 $ARGV[0] eq "--help") {
56 &usage;
57 } elsif ($ARGV[0] =~ /^-/) {
58 print "$progname: unrecognized option `$ARGV[0]'\n";
59 print "Try `$progname --help' for more information.\n";
60 exit 1;
61 } else {
62 last arglist;
66 if ($#ARGV == 0) {
67 $binary="";
68 $data=$ARGV[0];
69 } elsif ($#ARGV == 1) {
70 $binary=$ARGV[0];
71 $data=$ARGV[1];
73 if ($binary =~ /^.*[\/].*$/) {
74 $prog = $binary;
75 } else {
76 $prog = "./$binary";
78 if (open (LOCS, "env LD_TRACE_LOADED_OBJECTS=1 $prog |")) {
79 while (<LOCS>) {
80 chop;
81 if (/^.*=> (.*) .(0x[0123456789abcdef]*).$/) {
82 $locs{$1} = $2;
85 close (LOCS);
87 } else {
88 die "Wrong number of arguments, run $progname --help for help.";
91 sub location {
92 my $str = pop(@_);
93 return $str if ($str eq "");
94 if ($str =~ /.*[[](0x[^]]*)]:(.)*/) {
95 my $addr = $1;
96 my $fct = $2;
97 return $cache{$addr} if (exists $cache{$addr});
98 if ($binary ne "" && open (ADDR, "addr2line -e $binary $addr|")) {
99 my $line = <ADDR>;
100 chomp $line;
101 close (ADDR);
102 if ($line ne '??:0') {
103 $cache{$addr} = $line;
104 return $cache{$addr};
107 $cache{$addr} = $str = "$fct @ $addr";
108 } elsif ($str =~ /^(.*):.*[[](0x[^]]*)]$/) {
109 my $prog = $1;
110 my $addr = $2;
111 my $searchaddr;
112 return $cache{$addr} if (exists $cache{$addr});
113 if ($locs{$prog} ne "") {
114 $searchaddr = sprintf "%#x", $addr - $locs{$prog};
115 } else {
116 $searchaddr = $addr;
117 $prog = $binary;
119 if ($binary ne "" && open (ADDR, "addr2line -e $prog $searchaddr|")) {
120 my $line = <ADDR>;
121 chomp $line;
122 close (ADDR);
123 if ($line ne '??:0') {
124 $cache{$addr} = $line;
125 return $cache{$addr};
128 $cache{$addr} = $str = $addr;
129 } elsif ($str =~ /^.*[[](0x[^]]*)]$/) {
130 my $addr = $1;
131 return $cache{$addr} if (exists $cache{$addr});
132 if ($binary ne "" && open (ADDR, "addr2line -e $binary $addr|")) {
133 my $line = <ADDR>;
134 chomp $line;
135 close (ADDR);
136 if ($line ne '??:0') {
137 $cache{$addr} = $line;
138 return $cache{$addr};
141 $cache{$addr} = $str = $addr;
143 return $str;
146 $nr=0;
147 open(DATA, "<$data") || die "Cannot open mtrace data file";
148 while (<DATA>) {
149 my @cols = split (' ');
150 my $n, $where;
151 if ($cols[0] eq "@") {
152 # We have address and/or function name.
153 $where=$cols[1];
154 $n=2;
155 } else {
156 $where="";
157 $n=0;
160 $allocaddr=$cols[$n + 1];
161 $howmuch=hex($cols[$n + 2]);
163 ++$nr;
164 SWITCH: {
165 if ($cols[$n] eq "+") {
166 if (defined $allocated{$allocaddr}) {
167 printf ("+ %#0@XXX@x Alloc %d duplicate: %s %s\n",
168 hex($allocaddr), $nr, &location($addrwas{$allocaddr}),
169 $where);
170 } elsif ($allocaddr =~ /^0x/) {
171 $allocated{$allocaddr}=$howmuch;
172 $addrwas{$allocaddr}=$where;
174 last SWITCH;
176 if ($cols[$n] eq "-") {
177 if (defined $allocated{$allocaddr}) {
178 undef $allocated{$allocaddr};
179 undef $addrwas{$allocaddr};
180 } else {
181 printf ("- %#0@XXX@x Free %d was never alloc'd %s\n",
182 hex($allocaddr), $nr, &location($where));
184 last SWITCH;
186 if ($cols[$n] eq "<") {
187 if (defined $allocated{$allocaddr}) {
188 undef $allocated{$allocaddr};
189 undef $addrwas{$allocaddr};
190 } else {
191 printf ("- %#0@XXX@x Realloc %d was never alloc'd %s\n",
192 hex($allocaddr), $nr, &location($where));
194 last SWITCH;
196 if ($cols[$n] eq ">") {
197 if (defined $allocated{$allocaddr}) {
198 printf ("+ %#0@XXX@x Realloc %d duplicate: %#010x %s %s\n",
199 hex($allocaddr), $nr, $allocated{$allocaddr},
200 &location($addrwas{$allocaddr}), &location($where));
201 } else {
202 $allocated{$allocaddr}=$howmuch;
203 $addrwas{$allocaddr}=$where;
205 last SWITCH;
207 if ($cols[$n] eq "=") {
208 # Ignore "= Start".
209 last SWITCH;
211 if ($cols[$n] eq "!") {
212 # Ignore failed realloc for now.
213 last SWITCH;
217 close (DATA);
219 # Now print all remaining entries.
220 @addrs= keys %allocated;
221 $anything=0;
222 if ($#addrs >= 0) {
223 foreach $addr (sort @addrs) {
224 if (defined $allocated{$addr}) {
225 if ($anything == 0) {
226 print "\nMemory not freed:\n-----------------\n";
227 print ' ' x (@XXX@ - 7), "Address Size Caller\n";
228 $anything=1;
230 printf ("%#0@XXX@x %#8x at %s\n", hex($addr), $allocated{$addr},
231 &location($addrwas{$addr}));
235 print "No memory leaks.\n" if ($anything == 0);
237 exit $anything != 0;