fseek.cpp
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// RUN: %clangxx -O0 -g %s -o %t && %run %t 2>&1 | FileCheck %s
//
// UNSUPPORTED: linux, darwin, solaris
#include <assert.h>
#include <inttypes.h>
#include <stdio.h>
int main(void) {
printf("fseek\n");
FILE *fp = fopen("/etc/fstab", "r");
assert(fp);
int rv = fseek(fp, 10, SEEK_SET);
assert(!rv);
printf("position: %ld\n", ftell(fp));
rewind(fp);
printf("position: %ld\n", ftell(fp));
rv = fseeko(fp, 15, SEEK_SET);
assert(!rv);
printf("position: %" PRIuMAX "\n", (uintmax_t)ftello(fp));
fpos_t pos;
rv = fgetpos(fp, &pos);
assert(!rv);
rewind(fp);
printf("position: %" PRIuMAX "\n", (uintmax_t)ftello(fp));
rv = fsetpos(fp, &pos);
assert(!rv);
printf("position: %" PRIuMAX "\n", (uintmax_t)ftello(fp));
rv = fclose(fp);
assert(!rv);
// CHECK: fseek
// CHECK: position: 10
// CHECK: position: 0
// CHECK: position: 15
// CHECK: position: 0
// CHECK: position: 15
return 0;
}