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jeremybenn |
/* Copyright (C) 2000, 2003 Free Software Foundation.
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Ensure all expected transformations of builtin strncat occur and
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perform correctly.
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Written by Kaveh R. Ghazi, 11/27/2000. */
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extern void abort (void);
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typedef __SIZE_TYPE__ size_t;
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extern char *strncat (char *, const char *, size_t);
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extern char *strcpy (char *, const char *);
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extern void *memset (void *, int, size_t);
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extern int memcmp (const void *, const void *, size_t);
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int x = 123;
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/* Reset the destination buffer to a known state. */
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#define RESET_DST_WITH(FILLER) \
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do { memset (dst, 'X', sizeof (dst)); strcpy (dst, (FILLER)); } while (0)
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void
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main_test (void)
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{
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const char *const s1 = "hello world";
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const char *const s2 = "";
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char dst[64], *d2;
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RESET_DST_WITH (s1);
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if (strncat (dst, "", 100) != dst || memcmp (dst, "hello world\0XXX", 15))
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abort();
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RESET_DST_WITH (s1);
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if (strncat (dst, s2, 100) != dst || memcmp (dst, "hello world\0XXX", 15))
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abort();
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RESET_DST_WITH (s1); d2 = dst;
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if (strncat (++d2, s2, 100) != dst+1 || d2 != dst+1
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|| memcmp (dst, "hello world\0XXX", 15))
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abort();
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RESET_DST_WITH (s1); d2 = dst;
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if (strncat (++d2+5, s2, 100) != dst+6 || d2 != dst+1
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|| memcmp (dst, "hello world\0XXX", 15))
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abort();
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RESET_DST_WITH (s1); d2 = dst;
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if (strncat (++d2+5, s1+11, 100) != dst+6 || d2 != dst+1
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|| memcmp (dst, "hello world\0XXX", 15))
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abort();
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RESET_DST_WITH (s1); d2 = dst;
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if (strncat (++d2+5, s1, 0) != dst+6 || d2 != dst+1
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|| memcmp (dst, "hello world\0XXX", 15))
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abort();
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RESET_DST_WITH (s1); d2 = dst;
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if (strncat (++d2+5, "", ++x) != dst+6 || d2 != dst+1 || x != 124
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|| memcmp (dst, "hello world\0XXX", 15))
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abort();
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RESET_DST_WITH (s1);
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if (strncat (dst, "foo", 3) != dst || memcmp (dst, "hello worldfoo\0XXX", 18))
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abort();
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RESET_DST_WITH (s1);
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if (strncat (dst, "foo", 100) != dst || memcmp (dst, "hello worldfoo\0XXX", 18))
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abort();
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RESET_DST_WITH (s1);
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if (strncat (dst, s1, 100) != dst || memcmp (dst, "hello worldhello world\0XXX", 26))
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abort();
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RESET_DST_WITH (s1); d2 = dst;
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if (strncat (++d2, s1, 100) != dst+1 || d2 != dst+1
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|| memcmp (dst, "hello worldhello world\0XXX", 26))
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abort();
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RESET_DST_WITH (s1); d2 = dst;
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if (strncat (++d2+5, s1, 100) != dst+6 || d2 != dst+1
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|| memcmp (dst, "hello worldhello world\0XXX", 26))
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abort();
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RESET_DST_WITH (s1); d2 = dst;
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if (strncat (++d2+5, s1+5, 100) != dst+6 || d2 != dst+1
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|| memcmp (dst, "hello world world\0XXX", 21))
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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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to ensure that it works and that the prototype is correct. */
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RESET_DST_WITH (s1);
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if (__builtin_strncat (dst, "", 100) != dst
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|| memcmp (dst, "hello world\0XXX", 15))
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abort();
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}
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