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glibc/stdio-common/tst-fmemopen2.c
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#include <assert.h> | |
#include <stdio.h> | |
#include <string.h> | |
#include <sys/types.h> | |
static int | |
do_test (void) | |
{ | |
int result = 0; | |
char buf[100]; | |
FILE *fp = fmemopen (buf, sizeof (buf), "w"); | |
if (fp == NULL) | |
{ | |
puts ("fmemopen failed"); | |
return 0; | |
} | |
static const char str[] = "hello world"; | |
#define nstr (sizeof (str) - 1) | |
fputs (str, fp); | |
off_t o = ftello (fp); | |
if (o != nstr) | |
{ | |
printf ("first ftello returned %ld, expected %zu\n", o, nstr); | |
result = 1; | |
} | |
rewind (fp); | |
o = ftello (fp); | |
if (o != 0) | |
{ | |
printf ("second ftello returned %ld, expected 0\n", o); | |
result = 1; | |
} | |
if (fseeko (fp, 0, SEEK_END) != 0) | |
{ | |
puts ("fseeko failed"); | |
return 1; | |
} | |
o = ftello (fp); | |
if (o != nstr) | |
{ | |
printf ("third ftello returned %ld, expected %zu\n", o, nstr); | |
result = 1; | |
} | |
rewind (fp); | |
static const char str2[] = "just hello"; | |
#define nstr2 (sizeof (str2) - 1) | |
assert (nstr2 < nstr); | |
fputs (str2, fp); | |
o = ftello (fp); | |
if (o != nstr2) | |
{ | |
printf ("fourth ftello returned %ld, expected %zu\n", o, nstr2); | |
result = 1; | |
} | |
fclose (fp); | |
static const char str3[] = "just hellod"; | |
if (strcmp (buf, str3) != 0) | |
{ | |
printf ("final string is \"%s\", expected \"%s\"\n", | |
buf, str3); | |
result = 1; | |
} | |
return result; | |
} | |
#define TEST_FUNCTION do_test () | |
#include "../test-skeleton.c" |