]>
Commit | Line | Data |
---|---|---|
cae6ebb2 | 1 | /* Derived from the test case in |
a306c790 | 2 | https://sourceware.org/bugzilla/show_bug.cgi?id=1078. */ |
cae6ebb2 UD |
3 | #include <stdio.h> |
4 | #include <stdlib.h> | |
5 | #include <unistd.h> | |
6 | ||
7 | #define OUT_SIZE 10000 | |
8 | ||
9 | ||
10 | static int fd; | |
11 | ||
12 | static void prepare (void); | |
13 | #define PREPARE(argc, argv) prepare () | |
14 | ||
15 | static int do_test (void); | |
16 | #define TEST_FUNCTION do_test () | |
17 | ||
18 | #include "../test-skeleton.c" | |
19 | ||
20 | ||
21 | static void | |
22 | prepare (void) | |
23 | { | |
24 | fd = create_temp_file ("tst-fwrite.", NULL); | |
25 | if (fd == -1) | |
26 | { | |
27 | puts ("cannot create temporary file"); | |
28 | exit (1); | |
29 | } | |
30 | } | |
31 | ||
32 | ||
33 | static int | |
34 | do_test (void) | |
35 | { | |
36 | FILE* f = fdopen (fd, "w+"); | |
37 | if (f == NULL) { | |
38 | puts ("cannot create stream"); | |
39 | return 1; | |
40 | } | |
41 | puts ("Opened temp file"); | |
42 | ||
43 | if (fwrite ("a", 1, 1, f) != 1) | |
44 | { | |
45 | puts ("1st fwrite failed"); | |
46 | return 1; | |
47 | } | |
48 | puts ("Wrote a byte"); | |
49 | fflush (f); | |
50 | ||
51 | char buffer[10000]; | |
52 | size_t i = fread (buffer, 1, sizeof (buffer), f); | |
53 | printf ("Read %zu bytes\n", i); | |
54 | ||
55 | for (i = 0; i < OUT_SIZE; i++) | |
56 | { | |
57 | if (fwrite ("n", 1, 1, f) != 1) | |
58 | { | |
59 | printf ("fwrite in loop round %zu failed\n", i); | |
60 | return 1; | |
61 | } | |
62 | ||
63 | if ((i + 1) % 1000 == 0) | |
64 | printf ("wrote %zu bytes ...\n", i + 1); | |
65 | } | |
66 | ||
67 | printf ("Wrote %i bytes [done]\n", OUT_SIZE); | |
68 | ||
69 | return 0; | |
70 | } |