| 1 | /* Test program for fsetpos on a wide character stream. */ |
|---|---|
| 2 | |
| 3 | #include <assert.h> |
| 4 | #include <stdio.h> |
| 5 | #include <wchar.h> |
| 6 | |
| 7 | static void do_prepare (void); |
| 8 | #define PREPARE(argc, argv) do_prepare () |
| 9 | static int do_test (void); |
| 10 | #define TEST_FUNCTION do_test () |
| 11 | #include <test-skeleton.c> |
| 12 | |
| 13 | static const char pattern[] = "12345"; |
| 14 | static char *temp_file; |
| 15 | |
| 16 | static void |
| 17 | do_prepare (void) |
| 18 | { |
| 19 | int fd = create_temp_file (base: "bug-wsetpos.", filename: &temp_file); |
| 20 | if (fd == -1) |
| 21 | { |
| 22 | printf (format: "cannot create temporary file: %m\n"); |
| 23 | exit (1); |
| 24 | } |
| 25 | write (fd, pattern, sizeof (pattern)); |
| 26 | close (fd: fd); |
| 27 | } |
| 28 | |
| 29 | static int |
| 30 | do_test (void) |
| 31 | { |
| 32 | FILE *fp = fopen (temp_file, "r"); |
| 33 | fpos_t pos; |
| 34 | wchar_t c; |
| 35 | |
| 36 | if (fp == NULL) |
| 37 | { |
| 38 | printf (format: "fdopen: %m\n"); |
| 39 | return 1; |
| 40 | } |
| 41 | |
| 42 | c = fgetwc (stream: fp); assert (c == L'1'); |
| 43 | c = fgetwc (stream: fp); assert (c == L'2'); |
| 44 | |
| 45 | if (fgetpos (fp, &pos) == EOF) |
| 46 | { |
| 47 | printf (format: "fgetpos: %m\n"); |
| 48 | return 1; |
| 49 | } |
| 50 | |
| 51 | rewind (fp); |
| 52 | if (ferror (stream: fp)) |
| 53 | { |
| 54 | printf (format: "rewind: %m\n"); |
| 55 | return 1; |
| 56 | } |
| 57 | |
| 58 | c = fgetwc (stream: fp); assert (c == L'1'); |
| 59 | |
| 60 | if (fsetpos (fp, &pos) == EOF) |
| 61 | { |
| 62 | printf (format: "fsetpos: %m\n"); |
| 63 | return 1; |
| 64 | } |
| 65 | |
| 66 | c = fgetwc (stream: fp); |
| 67 | if (c != L'3') |
| 68 | { |
| 69 | puts (s: "fsetpos failed"); |
| 70 | return 1; |
| 71 | } |
| 72 | |
| 73 | puts (s: "Test succeeded."); |
| 74 | return 0; |
| 75 | } |
| 76 |