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/* Copyright (C) 2000 Free Software Foundation.
Ensure all expected transformations of builtin strncat occur and
perform correctly.
Written by Kaveh R. Ghazi, 11/27/2000. */
extern void abort (void);
typedef __SIZE_TYPE__ size_t;
extern char *strncat (char *, const char *, size_t);
extern char *strcpy (char *, const char *);
extern char *strcmp (const char *, const char *);
int x = 123;
int main ()
{
const char *const s1 = "hello world";
const char *const s2 = "";
char dst[64], *d2;
strcpy (dst, s1);
if (strncat (dst, "", 100) != dst || strcmp (dst, s1))
abort();
strcpy (dst, s1);
if (strncat (dst, s2, 100) != dst || strcmp (dst, s1))
abort();
strcpy (dst, s1); d2 = dst;
if (strncat (++d2, s2, 100) != dst+1 || d2 != dst+1 || strcmp (dst, s1))
abort();
strcpy (dst, s1); d2 = dst;
if (strncat (++d2+5, s2, 100) != dst+6 || d2 != dst+1 || strcmp (dst, s1))
abort();
strcpy (dst, s1); d2 = dst;
if (strncat (++d2+5, s1+11, 100) != dst+6 || d2 != dst+1 || strcmp (dst, s1))
abort();
strcpy (dst, s1); d2 = dst;
if (strncat (++d2+5, s1, 0) != dst+6 || d2 != dst+1 || strcmp (dst, s1))
abort();
strcpy (dst, s1); d2 = dst;
if (strncat (++d2+5, "", ++x) != dst+6 || d2 != dst+1 || x != 124
|| strcmp (dst, s1))
abort();
strcpy (dst, s1);
if (strncat (dst, "foo", 3) != dst || strcmp (dst, "hello worldfoo"))
abort();
strcpy (dst, s1);
if (strncat (dst, "foo", 100) != dst || strcmp (dst, "hello worldfoo"))
abort();
strcpy (dst, s1);
if (strncat (dst, s1, 100) != dst || strcmp (dst, "hello worldhello world"))
abort();
strcpy (dst, s1); d2 = dst;
if (strncat (++d2, s1, 100) != dst+1 || d2 != dst+1
|| strcmp (dst, "hello worldhello world"))
abort();
strcpy (dst, s1); d2 = dst;
if (strncat (++d2+5, s1, 100) != dst+6 || d2 != dst+1
|| strcmp (dst, "hello worldhello world"))
abort();
strcpy (dst, s1); d2 = dst;
if (strncat (++d2+5, s1+5, 100) != dst+6 || d2 != dst+1
|| strcmp (dst, "hello world world"))
abort();
return 0;
}
#ifdef __OPTIMIZE__
/* When optimizing, all the above cases should be transformed into
something else. So any remaining calls to the original function
should abort. */
static char *
strncat (char *s1, const char *s2, size_t n)
{
abort();
}
#endif
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