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Remove machine-dependent rounding dependency from write overflow
[perl5.git] / t / op / magic.t
CommitLineData
8d063cd8
LW
1#!./perl
2
90ce63d5 3BEGIN {
90ce63d5
RS
4 $| = 1;
5 chdir 't' if -d 't';
20822f61 6 @INC = '../lib';
774d564b 7 $SIG{__WARN__} = sub { die "Dying on warning: ", @_ };
90ce63d5 8}
8d063cd8 9
9f1b1f2d 10use warnings;
04fee9b5 11use Config;
9f1b1f2d 12
0bee926d 13my $test = 1;
90ce63d5 14sub ok {
0bee926d
MS
15 my($ok, $info, $todo) = @_;
16
17 # You have to do it this way or VMS will get confused.
18 printf "%s $test%s\n", $ok ? "ok" : "not ok",
19 $todo ? " # TODO $todo" : '';
20
21 unless( $ok ) {
22 printf "# Failed test at line %d\n", (caller)[2];
09fdc078 23 print "# $info\n" if defined $info;
90ce63d5 24 }
0bee926d
MS
25
26 $test++;
27 return $ok;
28}
29
30sub skip {
31 my($reason) = @_;
32
33 printf "ok $test # skipped%s\n", defined $reason ? ": $reason" : '';
34
35 $test++;
36 return 1;
90ce63d5
RS
37}
38
ecce83c2 39print "1..53\n";
0bee926d 40
3e3baf6d 41$Is_MSWin32 = $^O eq 'MSWin32';
2986a63f 42$Is_NetWare = $^O eq 'NetWare';
3e3baf6d 43$Is_VMS = $^O eq 'VMS';
be708cc0
JH
44$Is_Dos = $^O eq 'dos';
45$Is_os2 = $^O eq 'os2';
46$Is_Cygwin = $^O eq 'cygwin';
47$Is_MacOS = $^O eq 'MacOS';
dc22e1c4 48$Is_MPE = $^O eq 'mpeix';
be708cc0 49
c363d00c
CB
50$PERL = ($Is_NetWare ? 'perl' :
51 ($Is_MacOS || $Is_VMS) ? $^X :
52 $Is_MSWin32 ? '.\perl' :
be708cc0 53 './perl');
68dc0745 54
39e571d4 55eval '$ENV{"FOO"} = "hi there";'; # check that ENV is inited inside eval
26f6e342
NK
56# cmd.exe will echo 'variable=value' but 4nt will echo just the value
57# -- Nikola Knezevic
8efe09f7 58if ($Is_MSWin32) { ok `set FOO` =~ /^(?:FOO=)?hi there$/; }
be708cc0 59elsif ($Is_MacOS) { ok "1 # skipped", 1; }
c363d00c 60elsif ($Is_VMS) { ok `write sys\$output f\$trnlnm("FOO")` eq "hi there\n"; }
be708cc0 61else { ok `echo \$FOO` eq "hi there\n"; }
8d063cd8 62
bf38876a 63unlink 'ajslkdfpqjsjfk';
8d063cd8 64$! = 0;
90ce63d5 65open(FOO,'ajslkdfpqjsjfk');
0bee926d 66ok $!, $!;
90ce63d5 67close FOO; # just mention it, squelch used-only-once
8d063cd8 68
be708cc0 69if ($Is_MSWin32 || $Is_NetWare || $Is_Dos || $Is_MPE || $Is_MacOS) {
2d4fcd5e 70 skip('SIGINT not safe on this platform') for 1..4;
68dc0745
PP
71}
72else {
c363d00c
CB
73 # the next tests are done in a subprocess because sh spits out a
74 # newline onto stderr when a child process kills itself with SIGINT.
04fee9b5 75 # We use a pipe rather than system() because the VMS command buffer
c363d00c
CB
76 # would overflow with a command that long.
77
78 open( CMDPIPE, "| $PERL");
79
80 print CMDPIPE <<'END';
378cc40b 81
79072805 82 $| = 1; # command buffering
378cc40b 83
b715f106
MB
84 $SIG{"INT"} = "ok3"; kill "INT",$$; sleep 1;
85 $SIG{"INT"} = "IGNORE"; kill "INT",$$; sleep 1; print "ok 4\n";
0bee926d 86 $SIG{"INT"} = "DEFAULT"; kill "INT",$$; sleep 1; print "not ok 4\n";
79072805
LW
87
88 sub ok3 {
89 if (($x = pop(@_)) eq "INT") {
90 print "ok 3\n";
91 }
92 else {
652ed9f8 93 print "not ok 3 ($x @_)\n";
79072805
LW
94 }
95 }
96
97END
c363d00c
CB
98
99 close CMDPIPE;
100
2d4fcd5e
AJ
101 open( CMDPIPE, "| $PERL");
102 print CMDPIPE <<'END';
103
104 { package X;
105 sub DESTROY {
106 kill "INT",$$;
107 }
108 }
109 sub x {
110 my $x=bless [], 'X';
111 return sub { $x };
112 }
113 $| = 1; # command buffering
114 $SIG{"INT"} = "ok5";
115 {
116 local $SIG{"INT"}=x();
117 print ""; # Needed to expose failure in 5.8.0 (why?)
118 }
119 sleep 1;
120 delete $SIG{"INT"};
121 kill "INT",$$; sleep 1;
122 sub ok5 {
123 print "ok 5\n";
124 }
125END
126 close CMDPIPE;
bb4e15c8 127 $? >>= 8 if $^O eq 'VMS'; # POSIX status hiding in 2nd byte
639cf43b
IZ
128 my $todo = ($^O eq 'os2' ? ' # TODO: EMX v0.9d_fix4 bug: wrong nibble? ' : '');
129 print $? & 0xFF ? "ok 6$todo\n" : "not ok 6$todo\n";
2d4fcd5e
AJ
130
131 $test += 4;
68dc0745 132}
a687059c 133
68dc0745
PP
134# can we slice ENV?
135@val1 = @ENV{keys(%ENV)};
a687059c 136@val2 = values(%ENV);
0bee926d
MS
137ok join(':',@val1) eq join(':',@val2);
138ok @val1 > 1;
90ce63d5
RS
139
140# regex vars
141'foobarbaz' =~ /b(a)r/;
0bee926d
MS
142ok $` eq 'foo', $`;
143ok $& eq 'bar', $&;
144ok $' eq 'baz', $';
145ok $+ eq 'a', $+;
90ce63d5
RS
146
147# $"
148@a = qw(foo bar baz);
0bee926d 149ok "@a" eq "foo bar baz", "@a";
90ce63d5
RS
150{
151 local $" = ',';
0bee926d 152 ok "@a" eq "foo,bar,baz", "@a";
90ce63d5 153}
a687059c 154
90ce63d5
RS
155# $;
156%h = ();
157$h{'foo', 'bar'} = 1;
0bee926d 158ok((keys %h)[0] eq "foo\034bar", (keys %h)[0]);
90ce63d5
RS
159{
160 local $; = 'x';
161 %h = ();
162 $h{'foo', 'bar'} = 1;
0bee926d 163 ok((keys %h)[0] eq 'fooxbar', (keys %h)[0]);
90ce63d5 164}
ed6116ce 165
90ce63d5 166# $?, $@, $$
dc459aad
JH
167if ($Is_MacOS) {
168 skip('$? + system are broken on MacPerl') for 1..2;
169}
170else {
171 system qq[$PERL "-I../lib" -e "use vmsish qw(hushed); exit(0)"];
172 ok $? == 0, $?;
173 system qq[$PERL "-I../lib" -e "use vmsish qw(hushed); exit(1)"];
174 ok $? != 0, $?;
175}
90ce63d5
RS
176
177eval { die "foo\n" };
0bee926d 178ok $@ eq "foo\n", $@;
90ce63d5 179
0bee926d 180ok $$ > 0, $$;
306196c3
MS
181eval { $$++ };
182ok $@ =~ /^Modification of a read-only value attempted/;
90ce63d5
RS
183
184# $^X and $0
ed37317b 185{
3e3baf6d 186 if ($^O eq 'qnx') {
7fbf1995 187 chomp($wd = `/usr/bin/fullpath -t`);
68dc0745 188 }
04fee9b5 189 elsif($Is_Cygwin || $Config{'d_procselfexe'}) {
1cab015a
FE
190 # Cygwin turns the symlink into the real file
191 chomp($wd = `pwd`);
192 $wd =~ s#/t$##;
193 }
ed344e4f
IZ
194 elsif($Is_os2) {
195 $wd = Cwd::sys_cwd();
196 }
be708cc0
JH
197 elsif($Is_MacOS) {
198 $wd = ':';
199 }
68dc0745
PP
200 else {
201 $wd = '.';
202 }
c363d00c 203 my $perl = ($Is_MacOS || $Is_VMS) ? $^X : "$wd/perl";
ed37317b
TB
204 my $headmaybe = '';
205 my $tailmaybe = '';
68dc0745 206 $script = "$wd/show-shebang";
ed37317b
TB
207 if ($Is_MSWin32) {
208 chomp($wd = `cd`);
8ac9c18d
GS
209 $wd =~ s|\\|/|g;
210 $perl = "$wd/perl.exe";
211 $script = "$wd/show-shebang.bat";
ed37317b
TB
212 $headmaybe = <<EOH ;
213\@rem ='
214\@echo off
215$perl -x \%0
216goto endofperl
217\@rem ';
218EOH
219 $tailmaybe = <<EOT ;
220
221__END__
222:endofperl
223EOT
224 }
ed344e4f
IZ
225 elsif ($Is_os2) {
226 $script = "./show-shebang";
227 }
be708cc0
JH
228 elsif ($Is_MacOS) {
229 $script = ":show-shebang";
230 }
c363d00c
CB
231 elsif ($Is_VMS) {
232 $script = "[]show-shebang";
be708cc0 233 }
a1a0e61e 234 if ($^O eq 'os390' or $^O eq 'posix-bc' or $^O eq 'vmesa') { # no shebang
9d116dd7
JH
235 $headmaybe = <<EOH ;
236 eval 'exec ./perl -S \$0 \${1+"\$\@"}'
237 if 0;
238EOH
239 }
2eecd615 240 $s1 = "\$^X is $perl, \$0 is $script\n";
0bee926d
MS
241 ok open(SCRIPT, ">$script"), $!;
242 ok print(SCRIPT $headmaybe . <<EOB . <<'EOF' . $tailmaybe), $!;
774d564b
PP
243#!$wd/perl
244EOB
90ce63d5
RS
245print "\$^X is $^X, \$0 is $0\n";
246EOF
0bee926d
MS
247 ok close(SCRIPT), $!;
248 ok chmod(0755, $script), $!;
c363d00c 249 $_ = ($Is_MacOS || $Is_VMS) ? `$perl $script` : `$script`;
ed344e4f 250 s/\.exe//i if $Is_Dos or $Is_Cygwin or $Is_os2;
68dc0745 251 s{\bminiperl\b}{perl}; # so that test doesn't fail with miniperl
ed37317b 252 s{is perl}{is $perl}; # for systems where $^X is only a basename
a6c40364 253 s{\\}{/}g;
0bee926d 254 ok((($Is_MSWin32 || $Is_os2) ? uc($_) eq uc($s1) : $_ eq $s1), " :$_:!=:$s1:");
ed37317b 255 $_ = `$perl $script`;
ed344e4f 256 s/\.exe//i if $Is_Dos or $Is_os2;
a6c40364 257 s{\\}{/}g;
0bee926d 258 ok((($Is_MSWin32 || $Is_os2) ? uc($_) eq uc($s1) : $_ eq $s1), " :$_:!=:$s1: after `$perl $script`");
22fc9b38 259 ok unlink($script), $!;
68dc0745 260}
ed6116ce 261
90ce63d5 262# $], $^O, $^T
0bee926d
MS
263ok $] >= 5.00319, $];
264ok $^O;
265ok $^T > 850000000, $^T;
66b1d557 266
be708cc0 267if ($Is_VMS || $Is_Dos || $Is_MacOS) {
44d95355 268 skip("%ENV manipulations fail or aren't safe on $^O") for 1..4;
66b1d557
HM
269}
270else {
da51b73c
MHM
271 if ($ENV{PERL_VALGRIND}) {
272 skip("clearing \%ENV is not safe when running under valgrind");
273 } else {
274 $PATH = $ENV{PATH};
275 $PDL = $ENV{PERL_DESTRUCT_LEVEL} || 0;
276 $ENV{foo} = "bar";
277 %ENV = ();
278 $ENV{PATH} = $PATH;
279 $ENV{PERL_DESTRUCT_LEVEL} = $PDL || 0;
280 ok ($Is_MSWin32 ? (`set foo 2>NUL` eq "")
281 : (`echo \$foo` eq "\n") );
282 }
3e3baf6d 283
ec00bdd8 284 $ENV{__NoNeSuCh} = "foo";
3e3baf6d 285 $0 = "bar";
26f6e342
NK
286# cmd.exe will echo 'variable=value' but 4nt will echo just the value
287# -- Nikola Knezevic
8efe09f7 288 ok ($Is_MSWin32 ? (`set __NoNeSuCh` =~ /^(?:__NoNeSuCh=)?foo$/)
ec00bdd8 289 : (`echo \$__NoNeSuCh` eq "foo\n") );
09fdc078
SR
290 if ($^O =~ /^(linux|freebsd)$/ &&
291 open CMDLINE, "/proc/$$/cmdline") {
292 chomp(my $line = scalar <CMDLINE>);
293 my $me = (split /\0/, $line)[0];
ecce83c2 294 ok($me eq $0, 'altering $0 is effective (testing with /proc/)');
09fdc078 295 close CMDLINE;
ecce83c2
JH
296 # perlbug #22811
297 my $mydollarzero = sub {
298 my($arg) = shift;
299 $0 = $arg if defined $arg;
fbd3c14b
SR
300 # In FreeBSD the ps -o command= will cause
301 # an empty header line, grab only the last line.
302 my $ps = (`ps -o command= -p $$`)[-1];
ecce83c2
JH
303 return if $?;
304 chomp $ps;
305 printf "# 0[%s]ps[%s]\n", $0, $ps;
306 $ps;
307 };
308 my $ps = $mydollarzero->("x");
e26ae24d 309 ok(!$ps # we allow that something goes wrong with the ps command
80bca1b4
JH
310 # In Linux 2.4 we would get an exact match ($ps eq 'x') but
311 # in Linux 2.2 there seems to be something funny going on:
312 # it seems as if the original length of the argv[] would
313 # be stored in the proc struct and then used by ps(1),
314 # no matter what characters we use to pad the argv[].
315 # (And if we use \0:s, they are shown as spaces.) Sigh.
316 || $ps =~ /^x\s*$/
6a4647a3
JH
317 # FreeBSD cannot get rid of both the leading "perl :"
318 # and the trailing " (perl)": some FreeBSD versions
319 # can get rid of the first one.
d2e0b13f 320 || ($^O eq 'freebsd' && $ps =~ m/^(?:perl: )?x(?: \(perl\))?$/),
e26ae24d 321 'altering $0 is effective (testing with `ps`)');
09fdc078 322 } else {
651aa52e 323 skip("\$0 check only on Linux and FreeBSD") for 0, 1;
09fdc078 324 }
66b1d557 325}
3e3baf6d 326
c7213721 327{
a45269de
MS
328 my $ok = 1;
329 my $warn = '';
330 local $SIG{'__WARN__'} = sub { $ok = 0; $warn = join '', @_; };
78987ded 331 $! = undef;
a45269de 332 ok($ok, $warn, $Is_VMS ? "'\$!=undef' does throw a warning" : '');
78987ded
HS
333}
334
902173a3
GS
335# test case-insignificance of %ENV (these tests must be enabled only
336# when perl is compiled with -DENV_IS_CASELESS)
2986a63f 337if ($Is_MSWin32 || $Is_NetWare) {
902173a3
GS
338 %ENV = ();
339 $ENV{'Foo'} = 'bar';
340 $ENV{'fOo'} = 'baz';
0bee926d
MS
341 ok (scalar(keys(%ENV)) == 1);
342 ok exists($ENV{'FOo'});
343 ok (delete($ENV{'foO'}) eq 'baz');
344 ok (scalar(keys(%ENV)) == 0);
902173a3
GS
345}
346else {
0bee926d 347 skip('no caseless %ENV support') for 1..4;
902173a3 348}
d2c93421 349
126c71c8
YST
350{
351 no warnings 'void';
352
d2c93421
RH
353# Make sure Errno hasn't been prematurely autoloaded
354
126c71c8 355 ok !defined %Errno::;
d2c93421
RH
356
357# Test auto-loading of Errno when %! is used
358
126c71c8
YST
359 ok scalar eval q{
360 %!;
361 defined %Errno::;
362 }, $@;
363}
d2c93421
RH
364
365
366# Make sure that Errno loading doesn't clobber $!
367
368undef %Errno::;
369delete $INC{"Errno.pm"};
370
371open(FOO, "nonesuch"); # Generate ENOENT
372my %errs = %{"!"}; # Cause Errno.pm to be loaded at run-time
0bee926d 373ok ${"!"}{ENOENT};
a4268c0a 374
b0e6f864 375ok $^S == 0 && defined $^S;
0bee926d 376eval { ok $^S == 1 };
b0e6f864
RGS
377eval " BEGIN { ok ! defined \$^S } ";
378ok $^S == 0 && defined $^S;
7c36658b
MS
379
380ok ${^TAINT} == 0;
381eval { ${^TAINT} = 1 };
382ok ${^TAINT} == 0;
9aa702ec
MJD
383
384# 5.6.1 had a bug: @+ and @- were not properly interpolated
385# into double-quoted strings
386# 20020414 mjd-perl-patch+@plover.com
b64ebf53
JH
387"I like pie" =~ /(I) (like) (pie)/;
388ok "@-" eq "0 0 2 7";
389ok "@+" eq "10 1 6 10";
9aa702ec 390
f28098ff
RGS
391# Tests for the magic get of $\
392{
393 my $ok = 0;
394 # [perl #19330]
395 {
396 local $\ = undef;
397 $\++; $\++;
398 $ok = $\ eq 2;
399 }
400 ok $ok;
401 $ok = 0;
402 {
403 local $\ = "a\0b";
404 $ok = "a$\b" eq "aa\0bb";
405 }
406 ok $ok;
407}