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test-libc: test double dup2, dup

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Issue #3477
Issue #3505
This commit is contained in:
Norman Feske 2019-09-24 10:10:26 +02:00 committed by Christian Helmuth
parent 9500e8b6e1
commit 59c60b8031
1 changed files with 25 additions and 0 deletions
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25
repos/libports/src/test/libc/main.cc
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@ -152,6 +152,31 @@ int main(int argc, char **argv)
}
}
{
/* test dup of stderr (issue #3477) */
int const new_fd = dup(STDERR_FILENO);
if (new_fd < 0) {
printf("dup of stderr failed\n");
++error_count;
} else {
close(new_fd);
}
}
{
/* test double dup2 (issue #3505) */
int const new_fd = 17, another_new_fd = 18;
if (dup2(STDERR_FILENO, new_fd) == new_fd
&& dup2(STDERR_FILENO, another_new_fd) == another_new_fd) {
close(new_fd);
close(another_new_fd);
} else {
printf("dup2 of stderr failed\n");
++error_count;
}
}
perror("perror");
struct timespec ts;