Commit | Line | Data |
8d063cd8 |
1 | #!./perl |
2 | |
8990e307 |
3 | # "This IS structured code. It's just randomly structured." |
4 | |
971ecbe6 |
5 | BEGIN { |
6 | chdir 't' if -d 't'; |
7 | @INC = qw(. ../lib); |
8 | } |
9 | |
b1464ded |
10 | print "1..47\n"; |
971ecbe6 |
11 | |
12 | require "test.pl"; |
8d063cd8 |
13 | |
ba9ff06f |
14 | $purpose; # update per test, and include in print ok's ! |
15 | |
79072805 |
16 | while ($?) { |
8d063cd8 |
17 | $foo = 1; |
18 | label1: |
19 | $foo = 2; |
20 | goto label2; |
21 | } continue { |
22 | $foo = 0; |
23 | goto label4; |
24 | label3: |
25 | $foo = 4; |
26 | goto label4; |
27 | } |
28 | goto label1; |
29 | |
30 | $foo = 3; |
31 | |
32 | label2: |
33 | print "#1\t:$foo: == 2\n"; |
34 | if ($foo == 2) {print "ok 1\n";} else {print "not ok 1\n";} |
35 | goto label3; |
36 | |
37 | label4: |
38 | print "#2\t:$foo: == 4\n"; |
39 | if ($foo == 4) {print "ok 2\n";} else {print "not ok 2\n";} |
40 | |
2986a63f |
41 | $PERL = ($^O eq 'MSWin32') ? '.\perl' : ($^O eq 'MacOS') ? $^X : ($^O eq 'NetWare') ? 'perl' : './perl'; |
f0963acb |
42 | $CMD = qq[$PERL -e "goto foo;" 2>&1 ]; |
b39cdb36 |
43 | $x = `$CMD`; |
a0d0e21e |
44 | |
8d063cd8 |
45 | if ($x =~ /label/) {print "ok 3\n";} else {print "not ok 3\n";} |
79072805 |
46 | |
47 | sub foo { |
48 | goto bar; |
49 | print "not ok 4\n"; |
50 | return; |
51 | bar: |
52 | print "ok 4\n"; |
53 | } |
54 | |
55 | &foo; |
56 | |
57 | sub bar { |
8990e307 |
58 | $x = 'bypass'; |
59 | eval "goto $x"; |
79072805 |
60 | } |
61 | |
62 | &bar; |
63 | exit; |
8990e307 |
64 | |
65 | FINALE: |
379c5dcc |
66 | print "ok 13\n"; |
2c15bef3 |
67 | |
68 | # does goto LABEL handle block contexts correctly? |
ba9ff06f |
69 | $purpose = 'handles block contexts correctly (does scope-hopping)'; |
70 | # note that this scope-hopping differs from last & next, |
71 | # which always go up-scope strictly. |
2c15bef3 |
72 | my $cond = 1; |
73 | for (1) { |
74 | if ($cond == 1) { |
75 | $cond = 0; |
76 | goto OTHER; |
77 | } |
78 | elsif ($cond == 0) { |
79 | OTHER: |
80 | $cond = 2; |
ba9ff06f |
81 | print "ok 14 - $purpose\n"; |
2c15bef3 |
82 | goto THIRD; |
83 | } |
84 | else { |
85 | THIRD: |
ba9ff06f |
86 | print "ok 15 - $purpose\n"; |
2c15bef3 |
87 | } |
88 | } |
89 | print "ok 16\n"; |
36c66720 |
90 | |
91 | # Does goto work correctly within a for(;;) loop? |
92 | # (BUG ID 20010309.004) |
93 | |
ba9ff06f |
94 | $purpose = 'goto inside a for(;;) loop body from inside the body'; |
36c66720 |
95 | for(my $i=0;!$i++;) { |
96 | my $x=1; |
97 | goto label; |
ba9ff06f |
98 | label: print (defined $x?"ok ": "not ok ", "17 - $purpose\n") |
36c66720 |
99 | } |
100 | |
101 | # Does goto work correctly going *to* a for(;;) loop? |
102 | # (make sure it doesn't skip the initializer) |
103 | |
ba9ff06f |
104 | $purpose = 'goto a for(;;) loop, from outside (does initializer)'; |
36c66720 |
105 | my ($z, $y) = (0); |
ba9ff06f |
106 | FORL1: for($y="ok 18 - $purpose\n"; $z;) {print $y; goto TEST19} |
107 | ($y,$z) = ("not ok 18 - $purpose\n", 1); |
36c66720 |
108 | goto FORL1; |
109 | |
110 | # Even from within the loop? |
36c66720 |
111 | TEST19: $z = 0; |
ba9ff06f |
112 | $purpose = 'goto a for(;;) loop, from inside (does initializer)'; |
113 | FORL2: for($y="ok 19 - $purpose\n"; 1;) { |
36c66720 |
114 | if ($z) { |
115 | print $y; |
116 | last; |
117 | } |
ba9ff06f |
118 | ($y, $z) = ("not ok 19 - $purpose\n", 1); |
36c66720 |
119 | goto FORL2; |
120 | } |
121 | |
9c5794fe |
122 | # Does goto work correctly within a try block? |
123 | # (BUG ID 20000313.004) |
ba9ff06f |
124 | $purpose = 'works correctly within a try block'; |
9c5794fe |
125 | my $ok = 0; |
126 | eval { |
127 | my $variable = 1; |
128 | goto LABEL20; |
129 | LABEL20: $ok = 1 if $variable; |
130 | }; |
ba9ff06f |
131 | print ($ok&&!$@ ? "ok 20" : "not ok 20", " - $purpose\n"); |
9c5794fe |
132 | |
133 | # And within an eval-string? |
ba9ff06f |
134 | $purpose = 'works correctly within an eval string'; |
9c5794fe |
135 | $ok = 0; |
136 | eval q{ |
137 | my $variable = 1; |
138 | goto LABEL21; |
139 | LABEL21: $ok = 1 if $variable; |
140 | }; |
ba9ff06f |
141 | print ($ok&&!$@ ? "ok" : "not ok", " 21 - $purpose\n"); |
9c5794fe |
142 | |
143 | |
a4f3a277 |
144 | # Test that goto works in nested eval-string |
ba9ff06f |
145 | $purpose = 'works correctly in a nested eval string'; |
a4f3a277 |
146 | $ok = 0; |
147 | {eval q{ |
148 | eval q{ |
149 | goto LABEL22; |
150 | }; |
151 | $ok = 0; |
152 | last; |
153 | |
154 | LABEL22: $ok = 1; |
155 | }; |
156 | $ok = 0 if $@; |
157 | } |
ba9ff06f |
158 | print ($ok ? "ok" : "not ok", " 22 - $purpose\n"); |
a4f3a277 |
159 | |
33d34e4c |
160 | { |
161 | my $false = 0; |
162 | |
163 | $ok = 0; |
164 | { goto A; A: $ok = 1 } continue { } |
165 | print "not " unless $ok; |
166 | print "ok 23 - #20357 goto inside /{ } continue { }/ loop\n"; |
167 | |
168 | $ok = 0; |
169 | { do { goto A; A: $ok = 1 } while $false } |
170 | print "not " unless $ok; |
171 | print "ok 24 - #20154 goto inside /do { } while ()/ loop\n"; |
172 | |
173 | $ok = 0; |
174 | foreach(1) { goto A; A: $ok = 1 } continue { }; |
175 | print "not " unless $ok; |
176 | print "ok 25 - goto inside /foreach () { } continue { }/ loop\n"; |
177 | |
178 | $ok = 0; |
179 | sub a { |
180 | A: { if ($false) { redo A; B: $ok = 1; redo A; } } |
181 | goto B unless $r++ |
182 | } |
183 | a(); |
184 | print "not " unless $ok; |
185 | print "ok 26 - #19061 loop label wiped away by goto\n"; |
186 | |
187 | $ok = 0; |
188 | for ($p=1;$p && goto A;$p=0) { A: $ok = 1 } |
189 | print "not " unless $ok; |
190 | print "ok 27 - weird case of goto and for(;;) loop\n"; |
191 | } |
192 | |
5023d17a |
193 | # bug #9990 - don't prematurely free the CV we're &going to. |
194 | |
195 | sub f1 { |
196 | my $x; |
197 | goto sub { $x; print "ok 28 - don't prematurely free CV\n" } |
198 | } |
199 | f1(); |
200 | |
241416b8 |
201 | # bug #22181 - this used to coredump or make $x undefined, due to |
202 | # erroneous popping of the inner BLOCK context |
203 | |
204 | for ($i=0; $i<2; $i++) { |
205 | my $x = 1; |
206 | goto LABEL29; |
207 | LABEL29: |
208 | print "not " if !defined $x || $x != 1; |
209 | } |
210 | print "ok 29 - goto in for(;;) with continuation\n"; |
211 | |
971ecbe6 |
212 | # bug #22299 - goto in require doesn't find label |
213 | |
214 | open my $f, ">goto01.pm" or die; |
215 | print $f <<'EOT'; |
216 | package goto01; |
217 | goto YYY; |
218 | die; |
219 | YYY: print "OK\n"; |
220 | 1; |
221 | EOT |
222 | close $f; |
223 | |
224 | curr_test(30); |
225 | my $r = runperl(prog => 'use goto01; print qq[DONE\n]'); |
226 | is($r, "OK\nDONE\n", "goto within use-d file"); |
227 | unlink "goto01.pm"; |
228 | |
e3aba57a |
229 | # test for [perl #24108] |
230 | sub i_return_a_label { |
231 | print "ok 31 - i_return_a_label called\n"; |
232 | return "returned_label"; |
233 | } |
234 | eval { goto +i_return_a_label; }; |
235 | print "not "; |
236 | returned_label : print "ok 32 - done to returned_label\n"; |
971ecbe6 |
237 | |
ff0adf16 |
238 | # [perl #29708] - goto &foo could leave foo() at depth two with |
239 | # @_ == PL_sv_undef, causing a coredump |
240 | |
241 | |
242 | my $r = runperl( |
243 | prog => |
244 | 'sub f { return if $d; $d=1; my $a=sub {goto &f}; &$a; f() } f(); print qq(ok\n)', |
245 | stderr => 1 |
246 | ); |
247 | print "not " if $r ne "ok\n"; |
248 | print "ok 33 - avoid pad without an \@_\n"; |
249 | |
ba9ff06f |
250 | goto moretests; |
8990e307 |
251 | exit; |
252 | |
253 | bypass: |
ba9ff06f |
254 | $purpose = 'eval "goto $x"'; |
255 | print "ok 5 - $purpose\n"; |
8990e307 |
256 | |
257 | # Test autoloading mechanism. |
258 | |
259 | sub two { |
260 | ($pack, $file, $line) = caller; # Should indicate original call stats. |
ba9ff06f |
261 | $purpose = 'autoloading mechanism.'; |
8990e307 |
262 | print "@_ $pack $file $line" eq "1 2 3 main $FILE $LINE" |
ba9ff06f |
263 | ? "ok 7 - $purpose\n" |
264 | : "not ok 7 - $purpose\n"; |
8990e307 |
265 | } |
266 | |
267 | sub one { |
268 | eval <<'END'; |
269 | sub one { print "ok 6\n"; goto &two; print "not ok 6\n"; } |
270 | END |
271 | goto &one; |
272 | } |
273 | |
274 | $FILE = __FILE__; |
275 | $LINE = __LINE__ + 1; |
276 | &one(1,2,3); |
277 | |
ba9ff06f |
278 | $purpose = 'goto NOWHERE sets $@'; |
8990e307 |
279 | $wherever = NOWHERE; |
280 | eval { goto $wherever }; |
ba9ff06f |
281 | print $@ =~ /Can't find label NOWHERE/ |
282 | ? "ok 8 - $purpose\n" : "not ok 8 - $purpose\n"; #' |
8990e307 |
283 | |
62b1ebc2 |
284 | # see if a modified @_ propagates |
285 | { |
286 | package Foo; |
287 | sub DESTROY { my $s = shift; print "ok $s->[0]\n"; } |
288 | sub show { print "# @_\nnot ok $_[0][0]\n" if @_ != 5; } |
289 | sub start { push @_, 1, "foo", {}; goto &show; } |
290 | for (9..11) { start(bless([$_]), 'bar'); } |
291 | } |
292 | |
379c5dcc |
293 | sub auto { |
294 | goto &loadit; |
295 | } |
296 | |
297 | sub AUTOLOAD { print @_ } |
298 | |
299 | auto("ok 12\n"); |
300 | |
8990e307 |
301 | $wherever = FINALE; |
302 | goto $wherever; |
ba9ff06f |
303 | |
304 | moretests: |
305 | # test goto duplicated labels. |
306 | { |
307 | my $z = 0; |
308 | $purpose = "catch goto middle of foreach"; |
309 | eval { |
310 | $z = 0; |
311 | for (0..1) { |
312 | L4: # not outer scope |
313 | $z += 10; |
314 | last; |
315 | } |
316 | goto L4 if $z == 10; |
317 | last; |
318 | }; |
319 | print ($@ =~ /Can't "goto" into the middle of a foreach loop/ #' |
320 | ? "ok" : "not ok", " 34 - $purpose\n"); |
321 | |
322 | $z = 0; |
323 | # ambiguous label resolution (outer scope means endless loop!) |
324 | $purpose = "prefer same scope (loop body) to outer scope (loop entry)"; |
325 | L1: |
326 | for my $x (0..1) { |
327 | $z += 10; |
328 | print $z == 10 ? "" : "not ", "ok 35 - $purpose\n"; |
329 | goto L1 unless $x; |
330 | $z += 10; |
331 | L1: |
332 | print $z == 10 ? "" : "not ", "ok 36 - $purpose\n"; |
333 | last; |
334 | } |
335 | |
336 | $purpose = "prefer this scope (block body) to outer scope (block entry)"; |
337 | $z = 0; |
338 | L2: |
339 | { |
340 | $z += 10; |
341 | print $z == 10 ? "" : "not ", "ok 37 - $purpose\n"; |
342 | goto L2 if $z == 10; |
343 | $z += 10; |
344 | L2: |
345 | print $z == 10 ? "" : "not ", "ok 38 - $purpose\n"; |
346 | } |
347 | |
348 | |
349 | { |
350 | $purpose = "prefer this scope to inner scope"; |
351 | $z = 0; |
352 | while (1) { |
353 | L3: # not inner scope |
354 | $z += 10; |
355 | last; |
356 | } |
357 | print $z == 10 ? "": "not ", "ok 39 - $purpose\n"; |
358 | goto L3 if $z == 10; |
359 | $z += 10; |
360 | L3: # this scope ! |
361 | print $z == 10 ? "" : "not ", "ok 40 - $purpose\n"; |
362 | } |
363 | |
364 | L4: # not outer scope |
365 | { |
366 | $purpose = "prefer this scope to inner,outer scopes"; |
367 | $z = 0; |
368 | while (1) { |
369 | L4: # not inner scope |
370 | $z += 1; |
371 | last; |
372 | } |
373 | print $z == 1 ? "": "not ", "ok 41 - $purpose\n"; |
374 | goto L4 if $z == 1; |
375 | $z += 10; |
376 | L4: # this scope ! |
377 | print $z == 1 ? "": "not ", "ok 42 - $purpose\n"; |
378 | } |
379 | |
380 | { |
381 | $purpose = "same label, multiple times in same scope (choose 1st)"; |
382 | my $tnum = 43; |
383 | my $loop; |
384 | for $x (0..1) { |
385 | L2: # without this, fails 1 (middle) out of 3 iterations |
386 | $z = 0; |
387 | L2: |
388 | $z += 10; |
389 | print $z == 10 ? "": "not ", "ok $tnum - $purpose\n"; |
390 | $tnum++; |
391 | goto L2 if $z == 10 and not $loop++; |
392 | } |
393 | } |
394 | } |
395 | |
a45cdc79 |
396 | # deep recursion with gotos eventually caused a stack reallocation |
397 | # which messed up buggy internals that didn't expect the stack to move |
398 | |
399 | sub recurse1 { |
400 | unshift @_, "x"; |
401 | goto &recurse2; |
402 | } |
403 | sub recurse2 { |
404 | $x = shift; |
405 | $_[0] ? +1 + recurse1($_[0] - 1) : 0 |
406 | } |
407 | print "not " unless recurse1(500) == 500; |
408 | print "ok 46 - recursive goto &foo\n"; |
409 | |
b1464ded |
410 | # [perl #32039] Chained goto &sub drops data too early. |
411 | |
412 | sub a32039 { @_=("foo"); goto &b32039; } |
413 | sub b32039 { goto &c32039; } |
414 | sub c32039 { print $_[0] eq 'foo' ? "" : "not ", "ok 47 - chained &goto\n" } |
415 | a32039(); |
416 | |
417 | |
a45cdc79 |
418 | |