/* Test for fdopen bugs. */ #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <fcntl.h> #define assert(x) \ if (!(x)) \ { \ fputs ("test failed: " #x "\n", stderr); \ retval = 1; \ goto the_end; \ } int main (int argc, char *argv[]) { char name[256]; FILE *fp = NULL; int retval = 0; int fd; /* hack to get a tempfile name w/out using tmpname() * as that func causes a link time warning */ sprintf(name, "%s-uClibc-test.XXXXXX", __FILE__); fd = mkstemp(name); close(fd); fp = fopen (name, "w"); assert (fp != NULL) assert (fputs ("foobar and baz", fp) > 0); assert (fclose (fp) == 0); fp = NULL; fd = open (name, O_RDWR|O_CREAT); assert (fd != -1); assert (lseek (fd, 5, SEEK_SET) == 5); fp = fdopen (fd, "a"); assert (fp != NULL); /* SuSv3 says that doing a fdopen() does not reset the file position, * thus the '5' here is correct, not '14'. */ assert (ftell (fp) == 5); the_end: if (fp != NULL) assert (fclose (fp) == 0); unlink (name); return retval; }