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- // Copyright 2015 The Go Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style
- // license that can be found in the LICENSE file.
- #include <errno.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <time.h>
- #include <unistd.h>
- #define fd (30)
- // Tests libgo2.so, which does not export any functions.
- // Read a string from the file descriptor and print it.
- int main(void) {
- int i;
- ssize_t n;
- char buf[20];
- struct timespec ts;
- // The descriptor will be initialized in a thread, so we have to
- // give a chance to get opened.
- for (i = 0; i < 200; i++) {
- n = read(fd, buf, sizeof buf);
- if (n >= 0)
- break;
- if (errno != EBADF && errno != EINVAL) {
- fprintf(stderr, "BUG: read: %s\n", strerror(errno));
- return 2;
- }
- // An EBADF error means that the shared library has not opened the
- // descriptor yet.
- ts.tv_sec = 0;
- ts.tv_nsec = 10000000;
- nanosleep(&ts, NULL);
- }
- if (n < 0) {
- fprintf(stderr, "BUG: failed to read any data from pipe\n");
- return 2;
- }
- if (n == 0) {
- fprintf(stderr, "BUG: unexpected EOF\n");
- return 2;
- }
- if (n == sizeof buf) {
- n--;
- }
- buf[n] = '\0';
- printf("%s\n", buf);
- return 0;
- }
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