| 1 | #include <stdio.h> |
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| 2 | #include <string.h> |
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| 3 | |
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| 4 | #include <support/xstdio.h> |
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| 5 | |
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| 6 | char x[4096], z[4096], b[21], m[4096 * 4]; |
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| 7 | |
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| 8 | int |
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| 9 | main (void) |
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| 10 | { |
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| 11 | FILE *f = tmpfile (); |
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| 12 | int i, failed = 0; |
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| 13 | |
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| 14 | memset (x, 'x', 4096); |
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| 15 | memset (z, 'z', 4096); |
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| 16 | b[20] = 0; |
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| 17 | |
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| 18 | for (i = 0; i <= 5; i++) |
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| 19 | { |
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| 20 | fwrite (x, 4096, 1, f); |
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| 21 | fwrite (z, 4096, 1, f); |
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| 22 | } |
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| 23 | rewind (f); |
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| 24 | |
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| 25 | xfread (ptr: m, size: 4096 * 4 - 10, nmemb: 1, stream: f); |
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| 26 | xfread (ptr: b, size: 20, nmemb: 1, stream: f); |
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| 27 | printf (format: "got %s (should be %s)\n" , b, "zzzzzzzzzzxxxxxxxxxx" ); |
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| 28 | if (strcmp (b, "zzzzzzzzzzxxxxxxxxxx" )) |
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| 29 | failed = 1; |
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| 30 | |
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| 31 | fseek (f, -40, SEEK_CUR); |
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| 32 | xfread (ptr: b, size: 20, nmemb: 1, stream: f); |
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| 33 | printf (format: "got %s (should be %s)\n" , b, "zzzzzzzzzzzzzzzzzzzz" ); |
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| 34 | if (strcmp (b, "zzzzzzzzzzzzzzzzzzzz" )) |
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| 35 | failed = 1; |
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| 36 | |
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| 37 | xfread (ptr: b, size: 20, nmemb: 1, stream: f); |
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| 38 | printf (format: "got %s (should be %s)\n" , b, "zzzzzzzzzzxxxxxxxxxx" ); |
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| 39 | if (strcmp (b, "zzzzzzzzzzxxxxxxxxxx" )) |
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| 40 | failed = 1; |
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| 41 | |
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| 42 | xfread (ptr: b, size: 20, nmemb: 1, stream: f); |
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| 43 | printf (format: "got %s (should be %s)\n" , b, "xxxxxxxxxxxxxxxxxxxx" ); |
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| 44 | if (strcmp (b, "xxxxxxxxxxxxxxxxxxxx" )) |
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| 45 | failed = 1; |
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| 46 | |
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| 47 | return failed; |
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| 48 | } |
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| 49 | |
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