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[perl #26839] document the return value of an empty sub
[perl5.git] / t / comp / hints.t
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dbc6b789 1#!./perl
045ac317 2
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3# Tests the scoping of $^H and %^H
4
dfa41748 5BEGIN { print "1..15\n"; }
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6BEGIN {
7 print "not " if exists $^H{foo};
8 print "ok 1 - \$^H{foo} doesn't exist initially\n";
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9 print "not " if $^H & 0x00020000;
10 print "ok 2 - \$^H doesn't contain HINT_LOCALIZE_HH initially\n";
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11}
12{
13 # simulate a pragma -- don't forget HINT_LOCALIZE_HH
14 BEGIN { $^H |= 0x00020000; $^H{foo} = "a"; }
15 BEGIN {
16 print "not " if $^H{foo} ne "a";
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17 print "ok 3 - \$^H{foo} is now 'a'\n";
18 print "not " unless $^H & 0x00020000;
19 print "ok 4 - \$^H contains HINT_LOCALIZE_HH while compiling\n";
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20 }
21 {
22 BEGIN { $^H |= 0x00020000; $^H{foo} = "b"; }
23 BEGIN {
24 print "not " if $^H{foo} ne "b";
dbc6b789 25 print "ok 5 - \$^H{foo} is now 'b'\n";
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26 }
27 }
28 BEGIN {
29 print "not " if $^H{foo} ne "a";
dbc6b789 30 print "ok 6 - \$H^{foo} restored to 'a'\n";
045ac317 31 }
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32 # The pragma settings disappear after compilation
33 # (test at CHECK-time and at run-time)
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34 CHECK {
35 print "not " if exists $^H{foo};
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36 print "ok 9 - \$^H{foo} doesn't exist when compilation complete\n";
37 print "not " if $^H & 0x00020000;
38 print "ok 10 - \$^H doesn't contain HINT_LOCALIZE_HH when compilation complete\n";
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39 }
40 print "not " if exists $^H{foo};
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41 print "ok 11 - \$^H{foo} doesn't exist at runtime\n";
42 print "not " if $^H & 0x00020000;
43 print "ok 12 - \$^H doesn't contain HINT_LOCALIZE_HH at run-time\n";
44 # op_entereval should keep the pragmas it was compiled with
45 eval q*
46 print "not " if $^H{foo} ne "a";
47 print "ok 13 - \$^H{foo} is 'a' at eval-\"\" time # TODO\n";
48 print "not " unless $^H & 0x00020000;
49 print "ok 14 - \$^H contains HINT_LOCALIZE_HH at eval\"\"-time\n";
50 *;
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51}
52BEGIN {
53 print "not " if exists $^H{foo};
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54 print "ok 7 - \$^H{foo} doesn't exist while finishing compilation\n";
55 print "not " if $^H & 0x00020000;
56 print "ok 8 - \$^H doesn't contain HINT_LOCALIZE_HH while finishing compilation\n";
045ac317 57}
dfa41748
DM
58
59require 'test.pl';
60
61# bug #27040: hints hash was being double-freed
62my $result = runperl(
63 prog => '$^H |= 0x20000; eval q{BEGIN { $^H |= 0x20000 }}',
64 stderr => 1
65);
66print "not " if length $result;
67print "ok 15 - double-freeing hints hash\n";
68print "# got: $result\n" if length $result;
69