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HP-UX has also endgrent_r/endpwent_r marked obsolete.
[perl5.git] / Porting / findrfuncs
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1#!/usr/bin/perl -w
2
3#
4# findrfuncs: find reentrant variants of functions used in an executable.
5# Requires a functional "nm -u". Searches headers in /usr/include
6# to find available *_r functions and looks for non-reentrant
7# variants used in the supplied executable.
8#
9# Gurusamy Sarathy
10# gsar@ActiveState.com
11#
12# Hacked to automatically find the executable and shared objects.
13# --jhi
14
15use strict;
16use File::Find;
17
18my @EXES;
19my $NMU = 'nm -u';
20my @INCDIRS = qw(/usr/include);
21my $SO = 'so';
22my $EXE = '';
23
24if (open(CONFIG, "config.sh")) {
25 local $/;
26 my $CONFIG = <CONFIG>;
27 $SO = $1 if $CONFIG =~ /^so='(\w+)'/m;
28 $EXE = $1 if $CONFIG =~ /^_exe='\.(\w+)'/m;
c8688140 29 close(CONFIG);
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30}
31
32push @EXES, "perl$EXE";
33
72108f2b 34find(sub {push @EXES, $File::Find::name if /\.$SO$/}, '.' );
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35
36push @EXES, @ARGV;
37
38if ($^O eq 'dec_osf') {
39 $NMU = 'nm -Bu';
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40} elsif ($^O eq 'irix') {
41 $NMU = 'nm -pu';
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42}
43
44my %rfuncs;
45my @syms;
46find(sub {
47 return unless -f $File::Find::name;
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48 local *F;
49 open F, "<$File::Find::name"
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50 or die "Can't open $File::Find::name: $!";
51 my $line;
72108f2b 52 while (defined ($line = <F>)) {
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53 if ($line =~ /\b(\w+_r)\b/) {
54 #warn "$1 => $File::Find::name\n";
c8688140 55 $rfuncs{$1}->{$File::Find::name}++;
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56 }
57 }
72108f2b 58 close F;
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59 }, @INCDIRS);
60
61# delete bogus symbols grepped out of comments and such
62delete $rfuncs{setlocale_r} if $^O eq 'linux';
63
b4e83e5b 64# delete obsolete (as promised by man pages) symbols
205a1031 65my $netdb_r_obsolete;
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66if ($^O eq 'hpux') {
67 delete $rfuncs{crypt_r};
10bc17b6 68 delete $rfuncs{drand48_r};
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69 delete $rfuncs{endgrent_r};
70 delete $rfuncs{endpwent_r};
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71 delete $rfuncs{getgrent_r};
72 delete $rfuncs{getpwent_r};
b4e83e5b 73 delete $rfuncs{setlocale_r};
10bc17b6 74 delete $rfuncs{srand48_r};
b4e83e5b 75 delete $rfuncs{strerror_r};
205a1031 76 $netdb_r_obsolete = 1;
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77} elsif ($^O eq 'dec_osf') {
78 delete $rfuncs{crypt_r};
79 delete $rfuncs{strerror_r};
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80 $netdb_r_obsolete = 1;
81}
82if ($netdb_r_obsolete) {
83 delete @rfuncs{qw(endhostent_r
84 endnetent_r
85 endprotoent_r
86 endservent_r
87 gethostbyaddr_r
88 gethostbyname_r
89 gethostent_r
90 getnetbyaddr_r
91 getnetbyname_r
92 getnetent_r
205a1031 93 getprotobyname_r
10bc17b6 94 getprotobynumber_r
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95 getprotoent_r
96 getservbyname_r
97 getservbyport_r
98 getservent_r
99 sethostent_r
100 setnetent_r
101 setprotoent_r
102 setservent_r)};
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103}
104
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105my %syms;
106
bb304ec8 107for my $exe (@EXES) {
c8688140 108 # warn "#--- $exe\n";
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109 for my $sym (`$NMU $exe`) {
110 chomp $sym;
bb304ec8 111 $sym =~ s/^\s+//;
c8688140 112 $sym =~ s/^([0-9A-Fa-f]+\s+)?[Uu]\s+//;
72108f2b 113 $sym =~ s/\s+[Uu]\s+-$//;
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114 next if /\s/;
115 $sym =~ s/\@.*\z//; # remove @@GLIBC_2.0 etc
116 # warn "#### $sym\n";
6c03d0f3 117 if (exists $rfuncs{"${sym}_r"} && ! $syms{"$sym:$exe"}++) {
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118 push @syms, $sym;
119 }
120 }
121
122 if (@syms) {
123 print "\nFollowing symbols in $exe have reentrant versions:\n";
124 for my $sym (@syms) {
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125 my @f = sort keys %{$rfuncs{$sym . '_r'}};
126 print "$sym => $sym" . "_r (@f)\n";
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127 }
128 }
129 @syms = ();
130}
131