blob: b8c1a5f04575fda70ecb1df5966ef982c95b5298 [file] [log] [blame]
// RUN: %clangxx -g %s -o %t && %run %t
// Newer versions of Android have FDSan, and will fail this test as FDSan will
// catch the error instead.
// UNSUPPORTED: android
#include <assert.h>
#include <stdio.h>
#include <unistd.h>
int main(int argc, char **argv) {
FILE *fp = fopen(argv[0], "r");
assert(fp);
// file should be good upon opening
assert(!feof(fp) && !ferror(fp));
// read until EOF
char buf[BUFSIZ];
while (fread(buf, 1, sizeof buf, fp) != 0) {}
assert(feof(fp));
// clear EOF
clearerr(fp);
assert(!feof(fp) && !ferror(fp));
// get file descriptor
int fd = fileno(fp);
assert(fd != -1);
// break the file by closing underlying descriptor
assert(close(fd) != -1);
// verify that an error is signalled
assert(fread(buf, 1, sizeof buf, fp) == 0);
assert(ferror(fp));
// clear error
clearerr(fp);
assert(!feof(fp) && !ferror(fp));
// fclose() will return EBADF because of closed fd
assert(fclose(fp) == -1);
return 0;
}