1 /*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <gtest/gtest.h>
18
19 #include "BionicDeathTest.h"
20 #include "math_data_test.h"
21 #include "TemporaryFile.h"
22 #include "utils.h"
23
24 #include <errno.h>
25 #include <fcntl.h>
26 #include <libgen.h>
27 #include <limits.h>
28 #include <math.h>
29 #include <pthread.h>
30 #include <stdint.h>
31 #include <stdlib.h>
32 #include <sys/types.h>
33 #include <sys/wait.h>
34
35 // The random number generator tests all set the seed, get four values, reset the seed and check
36 // that they get the first two values repeated, and then reset the seed and check two more values
37 // to rule out the possibility that we're just going round a cycle of four values.
38 // TODO: factor this out.
39
TEST(stdlib,drand48)40 TEST(stdlib, drand48) {
41 srand48(0x01020304);
42 EXPECT_DOUBLE_EQ(0.65619299195623526, drand48());
43 EXPECT_DOUBLE_EQ(0.18522597229772941, drand48());
44 EXPECT_DOUBLE_EQ(0.42015087072844537, drand48());
45 EXPECT_DOUBLE_EQ(0.061637783047395089, drand48());
46 srand48(0x01020304);
47 EXPECT_DOUBLE_EQ(0.65619299195623526, drand48());
48 EXPECT_DOUBLE_EQ(0.18522597229772941, drand48());
49 srand48(0x01020304);
50 EXPECT_DOUBLE_EQ(0.65619299195623526, drand48());
51 EXPECT_DOUBLE_EQ(0.18522597229772941, drand48());
52 }
53
TEST(stdlib,erand48)54 TEST(stdlib, erand48) {
55 const unsigned short seed[3] = { 0x330e, 0xabcd, 0x1234 };
56 unsigned short xsubi[3];
57 memcpy(xsubi, seed, sizeof(seed));
58 EXPECT_DOUBLE_EQ(0.39646477376027534, erand48(xsubi));
59 EXPECT_DOUBLE_EQ(0.84048536941142515, erand48(xsubi));
60 EXPECT_DOUBLE_EQ(0.35333609724524351, erand48(xsubi));
61 EXPECT_DOUBLE_EQ(0.44658343479654405, erand48(xsubi));
62 memcpy(xsubi, seed, sizeof(seed));
63 EXPECT_DOUBLE_EQ(0.39646477376027534, erand48(xsubi));
64 EXPECT_DOUBLE_EQ(0.84048536941142515, erand48(xsubi));
65 memcpy(xsubi, seed, sizeof(seed));
66 EXPECT_DOUBLE_EQ(0.39646477376027534, erand48(xsubi));
67 EXPECT_DOUBLE_EQ(0.84048536941142515, erand48(xsubi));
68 }
69
TEST(stdlib,lcong48)70 TEST(stdlib, lcong48) {
71 unsigned short p[7] = { 0x0102, 0x0304, 0x0506, 0x0708, 0x090a, 0x0b0c, 0x0d0e };
72 lcong48(p);
73 EXPECT_EQ(1531389981, lrand48());
74 EXPECT_EQ(1598801533, lrand48());
75 EXPECT_EQ(2080534853, lrand48());
76 EXPECT_EQ(1102488897, lrand48());
77 lcong48(p);
78 EXPECT_EQ(1531389981, lrand48());
79 EXPECT_EQ(1598801533, lrand48());
80 lcong48(p);
81 EXPECT_EQ(1531389981, lrand48());
82 EXPECT_EQ(1598801533, lrand48());
83 }
84
TEST(stdlib,lrand48)85 TEST(stdlib, lrand48) {
86 srand48(0x01020304);
87 EXPECT_EQ(1409163720, lrand48());
88 EXPECT_EQ(397769746, lrand48());
89 EXPECT_EQ(902267124, lrand48());
90 EXPECT_EQ(132366131, lrand48());
91 srand48(0x01020304);
92 EXPECT_EQ(1409163720, lrand48());
93 EXPECT_EQ(397769746, lrand48());
94 srand48(0x01020304);
95 EXPECT_EQ(1409163720, lrand48());
96 EXPECT_EQ(397769746, lrand48());
97 }
98
TEST(stdlib,random)99 TEST(stdlib, random) {
100 srandom(0x01020304);
101 EXPECT_EQ(55436735, random());
102 EXPECT_EQ(1399865117, random());
103 EXPECT_EQ(2032643283, random());
104 EXPECT_EQ(571329216, random());
105 srandom(0x01020304);
106 EXPECT_EQ(55436735, random());
107 EXPECT_EQ(1399865117, random());
108 srandom(0x01020304);
109 EXPECT_EQ(55436735, random());
110 EXPECT_EQ(1399865117, random());
111 }
112
TEST(stdlib,rand)113 TEST(stdlib, rand) {
114 srand(0x01020304);
115 EXPECT_EQ(55436735, rand());
116 EXPECT_EQ(1399865117, rand());
117 EXPECT_EQ(2032643283, rand());
118 EXPECT_EQ(571329216, rand());
119 srand(0x01020304);
120 EXPECT_EQ(55436735, rand());
121 EXPECT_EQ(1399865117, rand());
122 srand(0x01020304);
123 EXPECT_EQ(55436735, rand());
124 EXPECT_EQ(1399865117, rand());
125 }
126
TEST(stdlib,mrand48)127 TEST(stdlib, mrand48) {
128 srand48(0x01020304);
129 EXPECT_EQ(-1476639856, mrand48());
130 EXPECT_EQ(795539493, mrand48());
131 EXPECT_EQ(1804534249, mrand48());
132 EXPECT_EQ(264732262, mrand48());
133 srand48(0x01020304);
134 EXPECT_EQ(-1476639856, mrand48());
135 EXPECT_EQ(795539493, mrand48());
136 srand48(0x01020304);
137 EXPECT_EQ(-1476639856, mrand48());
138 EXPECT_EQ(795539493, mrand48());
139 }
140
TEST(stdlib,posix_memalign_sweep)141 TEST(stdlib, posix_memalign_sweep) {
142 void* ptr;
143
144 // These should all fail.
145 for (size_t align = 0; align < sizeof(long); align++) {
146 ASSERT_EQ(EINVAL, posix_memalign(&ptr, align, 256))
147 << "Unexpected value at align " << align;
148 }
149
150 // Verify powers of 2 up to 2048 allocate, and verify that all other
151 // alignment values between the powers of 2 fail.
152 size_t last_align = sizeof(long);
153 for (size_t align = sizeof(long); align <= 2048; align <<= 1) {
154 // Try all of the non power of 2 values from the last until this value.
155 for (size_t fail_align = last_align + 1; fail_align < align; fail_align++) {
156 ASSERT_EQ(EINVAL, posix_memalign(&ptr, fail_align, 256))
157 << "Unexpected success at align " << fail_align;
158 }
159 ASSERT_EQ(0, posix_memalign(&ptr, align, 256))
160 << "Unexpected failure at align " << align;
161 ASSERT_EQ(0U, reinterpret_cast<uintptr_t>(ptr) & (align - 1))
162 << "Did not return a valid aligned ptr " << ptr << " expected alignment " << align;
163 free(ptr);
164 last_align = align;
165 }
166 }
167
TEST(stdlib,posix_memalign_various_sizes)168 TEST(stdlib, posix_memalign_various_sizes) {
169 std::vector<size_t> sizes{1, 4, 8, 256, 1024, 65000, 128000, 256000, 1000000};
170 for (auto size : sizes) {
171 void* ptr;
172 ASSERT_EQ(0, posix_memalign(&ptr, 16, 1))
173 << "posix_memalign failed at size " << size;
174 ASSERT_EQ(0U, reinterpret_cast<uintptr_t>(ptr) & 0xf)
175 << "Pointer not aligned at size " << size << " ptr " << ptr;
176 free(ptr);
177 }
178 }
179
TEST(stdlib,posix_memalign_overflow)180 TEST(stdlib, posix_memalign_overflow) {
181 void* ptr;
182 ASSERT_NE(0, posix_memalign(&ptr, 16, SIZE_MAX));
183 }
184
TEST(stdlib,realpath__NULL_filename)185 TEST(stdlib, realpath__NULL_filename) {
186 errno = 0;
187 char* p = realpath(NULL, NULL);
188 ASSERT_TRUE(p == NULL);
189 ASSERT_EQ(EINVAL, errno);
190 }
191
TEST(stdlib,realpath__empty_filename)192 TEST(stdlib, realpath__empty_filename) {
193 errno = 0;
194 char* p = realpath("", NULL);
195 ASSERT_TRUE(p == NULL);
196 ASSERT_EQ(ENOENT, errno);
197 }
198
TEST(stdlib,realpath__ENOENT)199 TEST(stdlib, realpath__ENOENT) {
200 errno = 0;
201 char* p = realpath("/this/directory/path/almost/certainly/does/not/exist", NULL);
202 ASSERT_TRUE(p == NULL);
203 ASSERT_EQ(ENOENT, errno);
204 }
205
TEST(stdlib,realpath__component_after_non_directory)206 TEST(stdlib, realpath__component_after_non_directory) {
207 errno = 0;
208 char* p = realpath("/dev/null/.", NULL);
209 ASSERT_TRUE(p == NULL);
210 ASSERT_EQ(ENOTDIR, errno);
211
212 errno = 0;
213 p = realpath("/dev/null/..", NULL);
214 ASSERT_TRUE(p == NULL);
215 ASSERT_EQ(ENOTDIR, errno);
216 }
217
TEST(stdlib,realpath)218 TEST(stdlib, realpath) {
219 // Get the name of this executable.
220 char executable_path[PATH_MAX];
221 int rc = readlink("/proc/self/exe", executable_path, sizeof(executable_path));
222 ASSERT_NE(rc, -1);
223 executable_path[rc] = '\0';
224
225 char buf[PATH_MAX + 1];
226 char* p = realpath("/proc/self/exe", buf);
227 ASSERT_STREQ(executable_path, p);
228
229 p = realpath("/proc/self/exe", NULL);
230 ASSERT_STREQ(executable_path, p);
231 free(p);
232 }
233
TEST(stdlib,qsort)234 TEST(stdlib, qsort) {
235 struct s {
236 char name[16];
237 static int comparator(const void* lhs, const void* rhs) {
238 return strcmp(reinterpret_cast<const s*>(lhs)->name, reinterpret_cast<const s*>(rhs)->name);
239 }
240 };
241 s entries[3];
242 strcpy(entries[0].name, "charlie");
243 strcpy(entries[1].name, "bravo");
244 strcpy(entries[2].name, "alpha");
245
246 qsort(entries, 3, sizeof(s), s::comparator);
247 ASSERT_STREQ("alpha", entries[0].name);
248 ASSERT_STREQ("bravo", entries[1].name);
249 ASSERT_STREQ("charlie", entries[2].name);
250
251 qsort(entries, 3, sizeof(s), s::comparator);
252 ASSERT_STREQ("alpha", entries[0].name);
253 ASSERT_STREQ("bravo", entries[1].name);
254 ASSERT_STREQ("charlie", entries[2].name);
255 }
256
TestBug57421_child(void * arg)257 static void* TestBug57421_child(void* arg) {
258 pthread_t main_thread = reinterpret_cast<pthread_t>(arg);
259 pthread_join(main_thread, NULL);
260 char* value = getenv("ENVIRONMENT_VARIABLE");
261 if (value == NULL) {
262 setenv("ENVIRONMENT_VARIABLE", "value", 1);
263 }
264 return NULL;
265 }
266
TestBug57421_main()267 static void TestBug57421_main() {
268 pthread_t t;
269 ASSERT_EQ(0, pthread_create(&t, NULL, TestBug57421_child, reinterpret_cast<void*>(pthread_self())));
270 pthread_exit(NULL);
271 }
272
273 // Even though this isn't really a death test, we have to say "DeathTest" here so gtest knows to
274 // run this test (which exits normally) in its own process.
275
276 class stdlib_DeathTest : public BionicDeathTest {};
277
TEST_F(stdlib_DeathTest,getenv_after_main_thread_exits)278 TEST_F(stdlib_DeathTest, getenv_after_main_thread_exits) {
279 // https://code.google.com/p/android/issues/detail?id=57421
280 ASSERT_EXIT(TestBug57421_main(), ::testing::ExitedWithCode(0), "");
281 }
282
TEST(stdlib,mkostemp64)283 TEST(stdlib, mkostemp64) {
284 TemporaryFile tf([](char* path) { return mkostemp64(path, O_CLOEXEC); });
285 int flags = fcntl(tf.fd, F_GETFD);
286 ASSERT_TRUE(flags != -1);
287 ASSERT_EQ(FD_CLOEXEC, flags & FD_CLOEXEC);
288 }
289
TEST(stdlib,mkostemp)290 TEST(stdlib, mkostemp) {
291 TemporaryFile tf([](char* path) { return mkostemp(path, O_CLOEXEC); });
292 int flags = fcntl(tf.fd, F_GETFD);
293 ASSERT_TRUE(flags != -1);
294 ASSERT_EQ(FD_CLOEXEC, flags & FD_CLOEXEC);
295 }
296
TEST(stdlib,mkstemp64)297 TEST(stdlib, mkstemp64) {
298 TemporaryFile tf(mkstemp64);
299 struct stat64 sb;
300 ASSERT_EQ(0, fstat64(tf.fd, &sb));
301 ASSERT_EQ(O_LARGEFILE, fcntl(tf.fd, F_GETFL) & O_LARGEFILE);
302 }
303
TEST(stdlib,mkstemp)304 TEST(stdlib, mkstemp) {
305 TemporaryFile tf;
306 struct stat sb;
307 ASSERT_EQ(0, fstat(tf.fd, &sb));
308 }
309
TEST(stdlib,system)310 TEST(stdlib, system) {
311 int status;
312
313 status = system("exit 0");
314 ASSERT_TRUE(WIFEXITED(status));
315 ASSERT_EQ(0, WEXITSTATUS(status));
316
317 status = system("exit 1");
318 ASSERT_TRUE(WIFEXITED(status));
319 ASSERT_EQ(1, WEXITSTATUS(status));
320 }
321
TEST(stdlib,atof)322 TEST(stdlib, atof) {
323 ASSERT_DOUBLE_EQ(1.23, atof("1.23"));
324 }
325
326 template <typename T>
CheckStrToFloat(T fn (const char * s,char ** end))327 static void CheckStrToFloat(T fn(const char* s, char** end)) {
328 FpUlpEq<0, T> pred;
329
330 EXPECT_PRED_FORMAT2(pred, 9.0, fn("9.0", nullptr));
331 EXPECT_PRED_FORMAT2(pred, 9.0, fn("0.9e1", nullptr));
332 EXPECT_PRED_FORMAT2(pred, 9.0, fn("0x1.2p3", nullptr));
333
334 const char* s = " \t\v\f\r\n9.0";
335 char* p;
336 EXPECT_PRED_FORMAT2(pred, 9.0, fn(s, &p));
337 EXPECT_EQ(s + strlen(s), p);
338
339 EXPECT_TRUE(isnan(fn("+nan", nullptr)));
340 EXPECT_TRUE(isnan(fn("nan", nullptr)));
341 EXPECT_TRUE(isnan(fn("-nan", nullptr)));
342
343 EXPECT_TRUE(isnan(fn("+nan(0xff)", nullptr)));
344 EXPECT_TRUE(isnan(fn("nan(0xff)", nullptr)));
345 EXPECT_TRUE(isnan(fn("-nan(0xff)", nullptr)));
346
347 EXPECT_TRUE(isnan(fn("+nanny", &p)));
348 EXPECT_STREQ("ny", p);
349 EXPECT_TRUE(isnan(fn("nanny", &p)));
350 EXPECT_STREQ("ny", p);
351 EXPECT_TRUE(isnan(fn("-nanny", &p)));
352 EXPECT_STREQ("ny", p);
353
354 EXPECT_EQ(0, fn("muppet", &p));
355 EXPECT_STREQ("muppet", p);
356 EXPECT_EQ(0, fn(" muppet", &p));
357 EXPECT_STREQ(" muppet", p);
358
359 EXPECT_EQ(std::numeric_limits<T>::infinity(), fn("+inf", nullptr));
360 EXPECT_EQ(std::numeric_limits<T>::infinity(), fn("inf", nullptr));
361 EXPECT_EQ(-std::numeric_limits<T>::infinity(), fn("-inf", nullptr));
362
363 EXPECT_EQ(std::numeric_limits<T>::infinity(), fn("+infinity", nullptr));
364 EXPECT_EQ(std::numeric_limits<T>::infinity(), fn("infinity", nullptr));
365 EXPECT_EQ(-std::numeric_limits<T>::infinity(), fn("-infinity", nullptr));
366
367 EXPECT_EQ(std::numeric_limits<T>::infinity(), fn("+infinitude", &p));
368 EXPECT_STREQ("initude", p);
369 EXPECT_EQ(std::numeric_limits<T>::infinity(), fn("infinitude", &p));
370 EXPECT_STREQ("initude", p);
371 EXPECT_EQ(-std::numeric_limits<T>::infinity(), fn("-infinitude", &p));
372 EXPECT_STREQ("initude", p);
373
374 // Check case-insensitivity.
375 EXPECT_EQ(std::numeric_limits<T>::infinity(), fn("InFiNiTy", nullptr));
376 EXPECT_TRUE(isnan(fn("NaN", nullptr)));
377 }
378
TEST(stdlib,strtod)379 TEST(stdlib, strtod) {
380 CheckStrToFloat(strtod);
381 }
382
TEST(stdlib,strtof)383 TEST(stdlib, strtof) {
384 CheckStrToFloat(strtof);
385 }
386
TEST(stdlib,strtold)387 TEST(stdlib, strtold) {
388 CheckStrToFloat(strtold);
389 }
390
TEST(stdlib,strtof_2206701)391 TEST(stdlib, strtof_2206701) {
392 ASSERT_EQ(0.0f, strtof("7.0064923216240853546186479164495e-46", NULL));
393 ASSERT_EQ(1.4e-45f, strtof("7.0064923216240853546186479164496e-46", NULL));
394 }
395
TEST(stdlib,strtod_largest_subnormal)396 TEST(stdlib, strtod_largest_subnormal) {
397 // This value has been known to cause javac and java to infinite loop.
398 // http://www.exploringbinary.com/java-hangs-when-converting-2-2250738585072012e-308/
399 ASSERT_EQ(2.2250738585072014e-308, strtod("2.2250738585072012e-308", NULL));
400 ASSERT_EQ(2.2250738585072014e-308, strtod("0.00022250738585072012e-304", NULL));
401 ASSERT_EQ(2.2250738585072014e-308, strtod("00000002.2250738585072012e-308", NULL));
402 ASSERT_EQ(2.2250738585072014e-308, strtod("2.225073858507201200000e-308", NULL));
403 ASSERT_EQ(2.2250738585072014e-308, strtod("2.2250738585072012e-00308", NULL));
404 ASSERT_EQ(2.2250738585072014e-308, strtod("2.22507385850720129978001e-308", NULL));
405 ASSERT_EQ(-2.2250738585072014e-308, strtod("-2.2250738585072012e-308", NULL));
406 }
407
TEST(stdlib,quick_exit)408 TEST(stdlib, quick_exit) {
409 pid_t pid = fork();
410 ASSERT_NE(-1, pid) << strerror(errno);
411
412 if (pid == 0) {
413 quick_exit(99);
414 }
415
416 AssertChildExited(pid, 99);
417 }
418
419 static int quick_exit_status = 0;
420
quick_exit_1(void)421 static void quick_exit_1(void) {
422 ASSERT_EQ(quick_exit_status, 0);
423 quick_exit_status = 1;
424 }
425
quick_exit_2(void)426 static void quick_exit_2(void) {
427 ASSERT_EQ(quick_exit_status, 1);
428 }
429
not_run(void)430 static void not_run(void) {
431 FAIL();
432 }
433
TEST(stdlib,at_quick_exit)434 TEST(stdlib, at_quick_exit) {
435 pid_t pid = fork();
436 ASSERT_NE(-1, pid) << strerror(errno);
437
438 if (pid == 0) {
439 ASSERT_EQ(at_quick_exit(quick_exit_2), 0);
440 ASSERT_EQ(at_quick_exit(quick_exit_1), 0);
441 atexit(not_run);
442 quick_exit(99);
443 }
444
445 AssertChildExited(pid, 99);
446 }
447
TEST(unistd,_Exit)448 TEST(unistd, _Exit) {
449 pid_t pid = fork();
450 ASSERT_NE(-1, pid) << strerror(errno);
451
452 if (pid == 0) {
453 _Exit(99);
454 }
455
456 AssertChildExited(pid, 99);
457 }
458
TEST(stdlib,pty_smoke)459 TEST(stdlib, pty_smoke) {
460 // getpt returns a pty with O_RDWR|O_NOCTTY.
461 int fd = getpt();
462 ASSERT_NE(-1, fd);
463
464 // grantpt is a no-op.
465 ASSERT_EQ(0, grantpt(fd));
466
467 // ptsname_r should start "/dev/pts/".
468 char name_r[128];
469 ASSERT_EQ(0, ptsname_r(fd, name_r, sizeof(name_r)));
470 name_r[9] = 0;
471 ASSERT_STREQ("/dev/pts/", name_r);
472
473 close(fd);
474 }
475
TEST(stdlib,posix_openpt)476 TEST(stdlib, posix_openpt) {
477 int fd = posix_openpt(O_RDWR|O_NOCTTY|O_CLOEXEC);
478 ASSERT_NE(-1, fd);
479 close(fd);
480 }
481
TEST(stdlib,ptsname_r_ENOTTY)482 TEST(stdlib, ptsname_r_ENOTTY) {
483 errno = 0;
484 char buf[128];
485 ASSERT_EQ(ENOTTY, ptsname_r(STDOUT_FILENO, buf, sizeof(buf)));
486 ASSERT_EQ(ENOTTY, errno);
487 }
488
TEST(stdlib,ptsname_r_EINVAL)489 TEST(stdlib, ptsname_r_EINVAL) {
490 int fd = getpt();
491 ASSERT_NE(-1, fd);
492 errno = 0;
493 char* buf = NULL;
494 ASSERT_EQ(EINVAL, ptsname_r(fd, buf, 128));
495 ASSERT_EQ(EINVAL, errno);
496 close(fd);
497 }
498
TEST(stdlib,ptsname_r_ERANGE)499 TEST(stdlib, ptsname_r_ERANGE) {
500 int fd = getpt();
501 ASSERT_NE(-1, fd);
502 errno = 0;
503 char buf[1];
504 ASSERT_EQ(ERANGE, ptsname_r(fd, buf, sizeof(buf)));
505 ASSERT_EQ(ERANGE, errno);
506 close(fd);
507 }
508
TEST(stdlib,ttyname_r)509 TEST(stdlib, ttyname_r) {
510 int fd = getpt();
511 ASSERT_NE(-1, fd);
512
513 // ttyname_r returns "/dev/ptmx" for a pty.
514 char name_r[128];
515 ASSERT_EQ(0, ttyname_r(fd, name_r, sizeof(name_r)));
516 ASSERT_STREQ("/dev/ptmx", name_r);
517
518 close(fd);
519 }
520
TEST(stdlib,ttyname_r_ENOTTY)521 TEST(stdlib, ttyname_r_ENOTTY) {
522 int fd = open("/dev/null", O_WRONLY);
523 errno = 0;
524 char buf[128];
525 ASSERT_EQ(ENOTTY, ttyname_r(fd, buf, sizeof(buf)));
526 ASSERT_EQ(ENOTTY, errno);
527 close(fd);
528 }
529
TEST(stdlib,ttyname_r_EINVAL)530 TEST(stdlib, ttyname_r_EINVAL) {
531 int fd = getpt();
532 ASSERT_NE(-1, fd);
533 errno = 0;
534 char* buf = NULL;
535 ASSERT_EQ(EINVAL, ttyname_r(fd, buf, 128));
536 ASSERT_EQ(EINVAL, errno);
537 close(fd);
538 }
539
TEST(stdlib,ttyname_r_ERANGE)540 TEST(stdlib, ttyname_r_ERANGE) {
541 int fd = getpt();
542 ASSERT_NE(-1, fd);
543 errno = 0;
544 char buf[1];
545 ASSERT_EQ(ERANGE, ttyname_r(fd, buf, sizeof(buf)));
546 ASSERT_EQ(ERANGE, errno);
547 close(fd);
548 }
549
TEST(stdlib,unlockpt_ENOTTY)550 TEST(stdlib, unlockpt_ENOTTY) {
551 int fd = open("/dev/null", O_WRONLY);
552 errno = 0;
553 ASSERT_EQ(-1, unlockpt(fd));
554 ASSERT_EQ(ENOTTY, errno);
555 close(fd);
556 }
557
TEST(stdlib,strtol_EINVAL)558 TEST(stdlib, strtol_EINVAL) {
559 errno = 0;
560 strtol("123", NULL, -1);
561 ASSERT_EQ(EINVAL, errno);
562 errno = 0;
563 strtol("123", NULL, 1);
564 ASSERT_EQ(EINVAL, errno);
565 errno = 0;
566 strtol("123", NULL, 37);
567 ASSERT_EQ(EINVAL, errno);
568 }
569
TEST(stdlib,strtoll_EINVAL)570 TEST(stdlib, strtoll_EINVAL) {
571 errno = 0;
572 strtoll("123", NULL, -1);
573 ASSERT_EQ(EINVAL, errno);
574 errno = 0;
575 strtoll("123", NULL, 1);
576 ASSERT_EQ(EINVAL, errno);
577 errno = 0;
578 strtoll("123", NULL, 37);
579 ASSERT_EQ(EINVAL, errno);
580 }
581
TEST(stdlib,strtoul_EINVAL)582 TEST(stdlib, strtoul_EINVAL) {
583 errno = 0;
584 strtoul("123", NULL, -1);
585 ASSERT_EQ(EINVAL, errno);
586 errno = 0;
587 strtoul("123", NULL, 1);
588 ASSERT_EQ(EINVAL, errno);
589 errno = 0;
590 strtoul("123", NULL, 37);
591 ASSERT_EQ(EINVAL, errno);
592 }
593
TEST(stdlib,strtoull_EINVAL)594 TEST(stdlib, strtoull_EINVAL) {
595 errno = 0;
596 strtoull("123", NULL, -1);
597 ASSERT_EQ(EINVAL, errno);
598 errno = 0;
599 strtoull("123", NULL, 1);
600 ASSERT_EQ(EINVAL, errno);
601 errno = 0;
602 strtoull("123", NULL, 37);
603 ASSERT_EQ(EINVAL, errno);
604 }
605
TEST(stdlib,getsubopt)606 TEST(stdlib, getsubopt) {
607 char* const tokens[] = {
608 const_cast<char*>("a"),
609 const_cast<char*>("b"),
610 const_cast<char*>("foo"),
611 nullptr
612 };
613 std::string input = "a,b,foo=bar,a,unknown";
614 char* subopts = &input[0];
615 char* value = nullptr;
616
617 ASSERT_EQ(0, getsubopt(&subopts, tokens, &value));
618 ASSERT_EQ(nullptr, value);
619 ASSERT_EQ(1, getsubopt(&subopts, tokens, &value));
620 ASSERT_EQ(nullptr, value);
621 ASSERT_EQ(2, getsubopt(&subopts, tokens, &value));
622 ASSERT_STREQ("bar", value);
623 ASSERT_EQ(0, getsubopt(&subopts, tokens, &value));
624 ASSERT_EQ(nullptr, value);
625
626 ASSERT_EQ(-1, getsubopt(&subopts, tokens, &value));
627 }
628
TEST(stdlib,mblen)629 TEST(stdlib, mblen) {
630 // "If s is a null pointer, mblen() shall return a non-zero or 0 value, if character encodings,
631 // respectively, do or do not have state-dependent encodings." We're always UTF-8.
632 EXPECT_EQ(0, mblen(nullptr, 1));
633
634 ASSERT_STREQ("C.UTF-8", setlocale(LC_ALL, "C.UTF-8"));
635
636 // 1-byte UTF-8.
637 EXPECT_EQ(1, mblen("abcdef", 6));
638 // 2-byte UTF-8.
639 EXPECT_EQ(2, mblen("\xc2\xa2" "cdef", 6));
640 // 3-byte UTF-8.
641 EXPECT_EQ(3, mblen("\xe2\x82\xac" "def", 6));
642 // 4-byte UTF-8.
643 EXPECT_EQ(4, mblen("\xf0\xa4\xad\xa2" "ef", 6));
644
645 // Illegal over-long sequence.
646 ASSERT_EQ(-1, mblen("\xf0\x82\x82\xac" "ef", 6));
647
648 // "mblen() shall ... return 0 (if s points to the null byte)".
649 EXPECT_EQ(0, mblen("", 1));
650 }
651