1 | /* Test program for bug in wide streams. */ |
2 | |
3 | #include <stdio.h> |
4 | #include <wchar.h> |
5 | |
6 | #include <support/xunistd.h> |
7 | |
8 | static void do_prepare (void); |
9 | #define PREPARE(argc, argv) do_prepare () |
10 | static int do_test (void); |
11 | #define TEST_FUNCTION do_test () |
12 | #include <test-skeleton.c> |
13 | |
14 | static char *temp_file; |
15 | |
16 | static void |
17 | do_prepare (void) |
18 | { |
19 | int fd = create_temp_file (base: "bug-ungetc." , filename: &temp_file); |
20 | if (fd == -1) |
21 | { |
22 | printf (format: "cannot create temporary file: %m\n" ); |
23 | exit (1); |
24 | } |
25 | xwrite (fd, "1!" , 2); |
26 | close (fd: fd); |
27 | } |
28 | |
29 | static int |
30 | do_test (void) |
31 | { |
32 | FILE *f = fopen (temp_file, "r+" ); |
33 | |
34 | if (f == NULL) |
35 | { |
36 | printf (format: "fopen: %m\n" ); |
37 | return 1; |
38 | } |
39 | |
40 | #define L_(s) L##s |
41 | //#define fwscanf fscanf |
42 | //#define fwprintf fprintf |
43 | |
44 | int i; |
45 | if (fwscanf (stream: f, L_("%d!" ), &i) != 1) |
46 | { |
47 | printf (format: "fwscanf failed\n" ); |
48 | return 1; |
49 | } |
50 | |
51 | rewind (f); |
52 | if (ferror (stream: f)) |
53 | { |
54 | printf (format: "rewind: %m\n" ); |
55 | return 1; |
56 | } |
57 | |
58 | if (fputws (L_("1!" ), stream: f) == EOF) |
59 | { |
60 | printf (format: "fputws: %m\n" ); |
61 | return 1; |
62 | } |
63 | |
64 | if (fflush (f) != 0) |
65 | { |
66 | printf (format: "fflush: %m\n" ); |
67 | return 1; |
68 | } |
69 | |
70 | if (fclose (f) != 0) |
71 | { |
72 | printf (format: "fclose: %m\n" ); |
73 | return 1; |
74 | } |
75 | |
76 | puts (s: "Test succeeded." ); |
77 | return 0; |
78 | } |
79 | |