| 1 | #include <stdio.h> |
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| 2 | #include <stdlib.h> |
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| 3 | #include <libc-diag.h> |
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| 4 | |
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| 5 | int |
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| 6 | main(int arc, char *argv[]) |
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| 7 | { |
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| 8 | int res; |
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| 9 | unsigned int val; |
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| 10 | |
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| 11 | FILE *fp = fopen ("/dev/null" , "r" ); |
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| 12 | |
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| 13 | val = 0; |
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| 14 | res = fscanf(stream: fp, format: "%n" , &val); |
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| 15 | |
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| 16 | printf(format: "Result of fscanf %%n = %d\n" , res); |
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| 17 | printf(format: "Scanned format = %d\n" , val); |
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| 18 | |
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| 19 | /* We're testing exactly the case the warning is for. */ |
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| 20 | DIAG_PUSH_NEEDS_COMMENT; |
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| 21 | DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wformat-zero-length" ); |
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| 22 | |
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| 23 | res = fscanf(stream: fp, format: "" ); |
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| 24 | |
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| 25 | DIAG_POP_NEEDS_COMMENT; |
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| 26 | |
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| 27 | printf(format: "Result of fscanf \"\" = %d\n" , res); |
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| 28 | if (res != 0) |
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| 29 | abort (); |
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| 30 | |
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| 31 | res = fscanf(stream: fp, format: "BLURB" ); |
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| 32 | printf(format: "Result of fscanf \"BLURB\" = %d\n" , res); |
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| 33 | if (res >= 0) |
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| 34 | abort (); |
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| 35 | |
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| 36 | fclose (fp); |
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| 37 | |
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| 38 | return 0; |
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| 39 | return 0; |
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| 40 | } |
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| 41 | |
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