1// gcc 4.9.0 introduced an invalid optimization for local weak alias symbols
2// which drops stdout fflush from exit in musl
3// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61144
4#include <errno.h>
5#include <stdio.h>
6#include <stdlib.h>
7#include <string.h>
8#include <unistd.h>
9#include <sys/wait.h>
10#include "test.h"
11
12#define ASSERT(c) do { \
13	errno = 0; \
14	if (!(c)) \
15		t_error("%s failed (errno: %s)\n", #c, strerror(errno)); \
16} while(0)
17
18int main(void)
19{
20	char tmp[] = "/data/local/tmp/testsuite-XXXXXX";
21	int fd, pid, status;
22	char c;
23
24	ASSERT((fd = mkstemp(tmp)) > 2);
25	ASSERT((pid = fork()) >= 0);
26	if (pid == 0) {
27		ASSERT(close(1) == 0);
28		ASSERT(dup(fd) == 1);
29		ASSERT(fwrite("x", 1, 1, stdout) == 1);
30		exit(t_status);
31	}
32	ASSERT(waitpid(pid, &status, 0) == pid);
33	ASSERT(WIFEXITED(status) && WEXITSTATUS(status) == 0);
34	ASSERT(pread(fd, &c, 1, 0) == 1);
35	ASSERT(c == 'x');
36	ASSERT(unlink(tmp) == 0);
37	return t_status;
38}
39