Viewing file:  pr59605.c (1.02 KB) -rw-r--r--
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/* { dg-do compile } */
/* { dg-options "-O2" } */
/* { dg-additional-options "-minline-stringops-dynamically" { target { i?86-*-* x86_64-*-* } } } */
extern void abort (void);
#define MAX_OFFSET (sizeof (long long))
#ifndef MAX_COPY
#define MAX_COPY (1024 + 8192)
#endif
#define MAX_EXTRA (sizeof (long long))
#define MAX_LENGTH (MAX_OFFSET + MAX_COPY + MAX_EXTRA)
static union {
char buf[MAX_LENGTH];
long long align_int;
long double align_fp;
} u;
char A[MAX_LENGTH];
int
main ()
{
int off, len, i;
char *p, *q;
for (i = 0; i < MAX_LENGTH; i++)
A[i] = 'A';
for (off = 0; off < MAX_OFFSET; off++)
for (len = 1; len < MAX_COPY; len++)
{
for (i = 0; i < MAX_LENGTH; i++)
u.buf[i] = 'a';
p = __builtin_memcpy (u.buf + off, A, len);
if (p != u.buf + off)
abort ();
q = u.buf;
for (i = 0; i < off; i++, q++)
if (*q != 'a')
abort ();
for (i = 0; i < len; i++, q++)
if (*q != 'A')
abort ();
for (i = 0; i < MAX_EXTRA; i++, q++)
if (*q != 'a')
abort ();
}
return 0;
}
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