// gcc 4.9.0 introduced an invalid optimization for local weak alias symbols

// which drops stdout fflush from exit in musl

// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61144

#include <errno.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

#include <sys/wait.h>

#include "test.h"

#define ASSERT(c) do { \

	errno = 0; \

	if (!(c)) \

		t_error("%s failed (errno: %s)\n", #c, strerror(errno)); \

} while(0)

int main(void)

{

	char tmp[] = "/tmp/testsuite-XXXXXX";

	int fd, pid, status;

	char c;

	ASSERT((fd = mkstemp(tmp)) > 2);

	ASSERT((pid = fork()) >= 0);

	if (pid == 0) {

		ASSERT(close(1) == 0);

		ASSERT(dup(fd) == 1);

		ASSERT(fwrite("x", 1, 1, stdout) == 1);

		exit(t_status);

	}

	ASSERT(waitpid(pid, &status, 0) == pid);

	ASSERT(WIFEXITED(status) && WEXITSTATUS(status) == 0);

	ASSERT(pread(fd, &c, 1, 0) == 1);

	ASSERT(c == 'x');

	ASSERT(unlink(tmp) == 0);

	return t_status;

}