| 1 | #undef __USE_STRING_INLINES |
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| 2 | #define __USE_STRING_INLINES |
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| 3 | #include <sys/cdefs.h> |
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| 4 | #include <libc-diag.h> |
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| 5 | #if __GNUC_PREREQ (8, 0) |
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| 6 | /* GCC warns about strncat truncating output; this is deliberately |
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| 7 | tested here. If fortify is enabled, it is also triggered by the |
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| 8 | wrappers. */ |
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| 9 | DIAG_IGNORE_NEEDS_COMMENT (8, "-Wstringop-truncation" ); |
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| 10 | #endif |
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| 11 | #include <stdio.h> |
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| 12 | #include <stdlib.h> |
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| 13 | #include <string.h> |
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| 14 | |
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| 15 | char d[3] = "\0\1\2" ; |
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| 16 | |
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| 17 | int |
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| 18 | main (void) |
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| 19 | { |
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| 20 | DIAG_PUSH_NEEDS_COMMENT; |
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| 21 | strncat (dest: d, src: "\5\6" , n: 1); |
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| 22 | DIAG_POP_NEEDS_COMMENT; |
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| 23 | if (d[0] != '\5') |
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| 24 | { |
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| 25 | puts (s: "d[0] != '\\5'" ); |
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| 26 | exit (1); |
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| 27 | } |
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| 28 | if (d[1] != '\0') |
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| 29 | { |
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| 30 | puts (s: "d[1] != '\\0'" ); |
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| 31 | exit (1); |
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| 32 | } |
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| 33 | if (d[2] != '\2') |
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| 34 | { |
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| 35 | puts (s: "d[2] != '\\2'" ); |
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| 36 | exit (1); |
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| 37 | } |
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| 38 | |
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| 39 | return 0; |
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| 40 | } |
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| 41 | |
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