1 /* Copyright (C) 2000, 2005 Free Software Foundation.
3 Ensure all expected transformations of builtin strncpy occur and
6 Written by Kaveh R. Ghazi, 11/25/2000. */
8 extern void abort (void);
9 typedef __SIZE_TYPE__ size_t;
10 extern char *strncpy (char *, const char *, size_t);
11 extern int memcmp (const void *, const void *, size_t);
12 extern void *memset (void *, int, size_t);
14 /* Reset the destination buffer to a known state. */
15 #define RESET_DST memset(dst, 'X', sizeof(dst))
22 const char *const src = "hello world";
27 if (strncpy (dst, src, 4) != dst || memcmp (dst, "hellXXX", 7))
31 if (strncpy (dst+16, src, 4) != dst+16 || memcmp (dst+16, "hellXXX", 7))
35 if (strncpy (dst+32, src+5, 4) != dst+32 || memcmp (dst+32, " worXXX", 7))
40 if (strncpy (++dst2, src+5, 4) != dst+1 || memcmp (dst2, " worXXX", 7)
45 if (strncpy (dst, src, 0) != dst || memcmp (dst, "XXX", 3))
49 dst2 = dst; src2 = src;
50 if (strncpy (++dst2, ++src2, 0) != dst+1 || memcmp (dst2, "XXX", 3)
51 || dst2 != dst+1 || src2 != src+1)
55 dst2 = dst; src2 = src;
56 if (strncpy (++dst2+5, ++src2+5, 0) != dst+6 || memcmp (dst2+5, "XXX", 3)
57 || dst2 != dst+1 || src2 != src+1)
61 if (strncpy (dst, src, 12) != dst || memcmp (dst, "hello world\0XXX", 15))
64 /* Test at least one instance of the __builtin_ style. We do this
65 to ensure that it works and that the prototype is correct. */
67 if (__builtin_strncpy (dst, src, 4) != dst || memcmp (dst, "hellXXX", 7))
71 if (strncpy (dst, i++ ? "xfoo" + 1 : "bar", 4) != dst
72 || memcmp (dst, "bar\0XXX", 7)