/* Copyright (C) 2000, 2005 Free Software Foundation.
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/* Copyright (C) 2000, 2005 Free Software Foundation.
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Ensure all expected transformations of builtin strncpy occur and
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Ensure all expected transformations of builtin strncpy occur and
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perform correctly.
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perform correctly.
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Written by Kaveh R. Ghazi, 11/25/2000. */
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Written by Kaveh R. Ghazi, 11/25/2000. */
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extern void abort (void);
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extern void abort (void);
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typedef __SIZE_TYPE__ size_t;
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typedef __SIZE_TYPE__ size_t;
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extern char *strncpy (char *, const char *, size_t);
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extern char *strncpy (char *, const char *, size_t);
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extern int memcmp (const void *, const void *, size_t);
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extern int memcmp (const void *, const void *, size_t);
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extern void *memset (void *, int, size_t);
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extern void *memset (void *, int, size_t);
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/* Reset the destination buffer to a known state. */
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/* Reset the destination buffer to a known state. */
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#define RESET_DST memset(dst, 'X', sizeof(dst))
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#define RESET_DST memset(dst, 'X', sizeof(dst))
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int i;
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int i;
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void
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void
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main_test (void)
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main_test (void)
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{
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{
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const char *const src = "hello world";
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const char *const src = "hello world";
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const char *src2;
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const char *src2;
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char dst[64], *dst2;
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char dst[64], *dst2;
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RESET_DST;
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RESET_DST;
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if (strncpy (dst, src, 4) != dst || memcmp (dst, "hellXXX", 7))
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if (strncpy (dst, src, 4) != dst || memcmp (dst, "hellXXX", 7))
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abort();
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abort();
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RESET_DST;
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RESET_DST;
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if (strncpy (dst+16, src, 4) != dst+16 || memcmp (dst+16, "hellXXX", 7))
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if (strncpy (dst+16, src, 4) != dst+16 || memcmp (dst+16, "hellXXX", 7))
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abort();
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abort();
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RESET_DST;
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RESET_DST;
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if (strncpy (dst+32, src+5, 4) != dst+32 || memcmp (dst+32, " worXXX", 7))
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if (strncpy (dst+32, src+5, 4) != dst+32 || memcmp (dst+32, " worXXX", 7))
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abort();
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abort();
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RESET_DST;
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RESET_DST;
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dst2 = dst;
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dst2 = dst;
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if (strncpy (++dst2, src+5, 4) != dst+1 || memcmp (dst2, " worXXX", 7)
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if (strncpy (++dst2, src+5, 4) != dst+1 || memcmp (dst2, " worXXX", 7)
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|| dst2 != dst+1)
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|| dst2 != dst+1)
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abort();
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abort();
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RESET_DST;
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RESET_DST;
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if (strncpy (dst, src, 0) != dst || memcmp (dst, "XXX", 3))
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if (strncpy (dst, src, 0) != dst || memcmp (dst, "XXX", 3))
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abort();
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abort();
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RESET_DST;
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RESET_DST;
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dst2 = dst; src2 = src;
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dst2 = dst; src2 = src;
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if (strncpy (++dst2, ++src2, 0) != dst+1 || memcmp (dst2, "XXX", 3)
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if (strncpy (++dst2, ++src2, 0) != dst+1 || memcmp (dst2, "XXX", 3)
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|| dst2 != dst+1 || src2 != src+1)
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|| dst2 != dst+1 || src2 != src+1)
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abort();
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abort();
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RESET_DST;
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RESET_DST;
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dst2 = dst; src2 = src;
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dst2 = dst; src2 = src;
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if (strncpy (++dst2+5, ++src2+5, 0) != dst+6 || memcmp (dst2+5, "XXX", 3)
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if (strncpy (++dst2+5, ++src2+5, 0) != dst+6 || memcmp (dst2+5, "XXX", 3)
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|| dst2 != dst+1 || src2 != src+1)
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|| dst2 != dst+1 || src2 != src+1)
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abort();
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abort();
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RESET_DST;
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RESET_DST;
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if (strncpy (dst, src, 12) != dst || memcmp (dst, "hello world\0XXX", 15))
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if (strncpy (dst, src, 12) != dst || memcmp (dst, "hello world\0XXX", 15))
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abort();
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abort();
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/* Test at least one instance of the __builtin_ style. We do this
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/* Test at least one instance of the __builtin_ style. We do this
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to ensure that it works and that the prototype is correct. */
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to ensure that it works and that the prototype is correct. */
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RESET_DST;
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RESET_DST;
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if (__builtin_strncpy (dst, src, 4) != dst || memcmp (dst, "hellXXX", 7))
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if (__builtin_strncpy (dst, src, 4) != dst || memcmp (dst, "hellXXX", 7))
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abort();
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abort();
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RESET_DST;
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RESET_DST;
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if (strncpy (dst, i++ ? "xfoo" + 1 : "bar", 4) != dst
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if (strncpy (dst, i++ ? "xfoo" + 1 : "bar", 4) != dst
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|| memcmp (dst, "bar\0XXX", 7)
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|| memcmp (dst, "bar\0XXX", 7)
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|| i != 1)
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|| i != 1)
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abort ();
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abort ();
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}
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}
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