mirror of
https://github.com/golang/go
synced 2024-11-08 18:26:14 -07:00
a00611f58d
Updates #30228 Change-Id: Ie9dca7c64be8dff729be98cb6190236287afd23e Reviewed-on: https://go-review.googlesource.com/c/163213 Run-TryBot: Bryan C. Mills <bcmills@google.com> Reviewed-by: Jay Conrod <jayconrod@google.com>
57 lines
1.2 KiB
C
57 lines
1.2 KiB
C
// 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;
|
|
}
|