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glibc/libio/bug-rewind2.c
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#include <stdio.h> | |
#include <wchar.h> | |
static int fd; | |
static void prepare (void); | |
#define PREPARE(argc, argv) prepare () | |
#define TEST_FUNCTION do_test () | |
static int do_test (void); | |
#include "../test-skeleton.c" | |
static void | |
prepare (void) | |
{ | |
fd = create_temp_file ("wrewind2.", NULL); | |
if (fd == -1) | |
exit (3); | |
} | |
static int | |
do_test (void) | |
{ | |
wchar_t dummy[10]; | |
int ret = 0; | |
FILE *fp; | |
int result = 0; | |
fp = fdopen (fd, "w+"); | |
if (fp == NULL) | |
{ | |
puts ("fopen(""testfile"", ""w+"") returned NULL."); | |
return 1; | |
} | |
else | |
{ | |
fwprintf (fp, L"abcd"); | |
printf ("current pos = %ld\n", ftell (fp)); | |
if (ftell (fp) != 4) | |
result = 1; | |
rewind (fp); | |
ret = fwscanf (fp, L"%c", dummy); | |
if (ret != 1) | |
{ | |
printf ("fwscanf returned %d, expected 1\n", ret); | |
result = 1; | |
} | |
printf ("current pos = %ld\n", ftell (fp)); | |
if (ftell (fp) != 1) | |
result = 1; | |
rewind (fp); | |
printf ("current pos = %ld\n", ftell (fp)); | |
if (ftell (fp) != 0) | |
result = 1; | |
fclose (fp); | |
} | |
return result; | |
} |