Rebase.

[official-gcc.git] / gcc / testsuite / gcc.dg / torture / Wsizeof-pointer-memaccess1.c

/* Test -Wsizeof-pointer-memaccess warnings.  */
/* { dg-do compile } */
/* { dg-options "-Wall -Wno-sizeof-array-argument" } */
/* Test just twice, once with -O0 non-fortified, once with -O2 fortified.  */
/* { dg-skip-if "" { *-*-* }  { "*" } { "-O0" "-O2" } } */
/* { dg-skip-if "" { *-*-* }  { "-flto" } { "" } } */

typedef __SIZE_TYPE__ size_t;
extern void *memset (void *, int, size_t);
extern void *memcpy (void *__restrict, const void *__restrict, size_t);
extern void *memmove (void *__restrict, const void *__restrict, size_t);
extern int memcmp (const void *, const void *, size_t);
extern char *strncpy (char *__restrict, const char *__restrict, size_t);
extern char *strncat (char *__restrict, const char *__restrict, size_t);
extern char *stpncpy (char *__restrict, const char *__restrict, size_t);
extern char *strndup (const char *, size_t);
extern int strncmp (const char *, const char *, size_t);
extern int strncasecmp (const char *, const char *, size_t);

#ifdef __OPTIMIZE__
# define bos(ptr) __builtin_object_size (ptr, 1)
# define bos0(ptr) __builtin_object_size (ptr, 0)

__attribute__((__always_inline__, __gnu_inline__, __artificial__))
extern inline void *
memset (void *dest, int c, size_t len)
{
  return __builtin___memset_chk (dest, c, len, bos0 (dest));
}

__attribute__((__always_inline__, __gnu_inline__, __artificial__))
extern inline void *
memcpy (void *__restrict dest, const void *__restrict src, size_t len)
{
  return __builtin___memcpy_chk (dest, src, len, bos0 (dest));
}

__attribute__((__always_inline__, __gnu_inline__, __artificial__))
extern inline void *
memmove (void *dest, const void *src, size_t len)
{
  return __builtin___memmove_chk (dest, src, len, bos0 (dest));
}

__attribute__((__always_inline__, __gnu_inline__, __artificial__))
extern inline char *
strncpy (char *__restrict dest, const char *__restrict src, size_t len)
{
  return __builtin___strncpy_chk (dest, src, len, bos (dest));
}

__attribute__((__always_inline__, __gnu_inline__, __artificial__))
extern inline char *
strncat (char *dest, const char *src, size_t len)
{
  return __builtin___strncat_chk (dest, src, len, bos (dest));
}

__attribute__((__always_inline__, __gnu_inline__, __artificial__))
extern inline char *
stpncpy (char *__restrict dest, const char *__restrict src, size_t len)
{
  return __builtin___stpncpy_chk (dest, src, len, bos (dest));
}
#endif

struct A { short a, b; int c, d; long e, f; };
typedef struct A TA;
typedef struct A *PA;
typedef TA *PTA;
struct B {};
typedef struct B TB;
typedef struct B *PB;
typedef TB *PTB;
typedef int X[3][3][3];

int
f1 (void *x, int z)
{
  struct A a, *pa1 = &a;
  TA *pa2 = &a;
  PA pa3 = &a;
  PTA pa4 = &a;
  memset (&a, 0, sizeof (&a));              /* { dg-warning "call is the same expression as the destination; did you mean to remove the addressof" } */
  memset (pa1, 0, sizeof (pa1));            /* { dg-warning "call is the same expression as the destination; did you mean to dereference it" } */
  memset (pa2, 0, sizeof pa2);              /* { dg-warning "call is the same expression as the destination; did you mean to dereference it" } */
  memset (pa3, 0, sizeof (pa3));            /* { dg-warning "call is the same expression as the destination; did you mean to dereference it" } */
  memset (pa4, 0, sizeof pa4);              /* { dg-warning "call is the same expression as the destination; did you mean to dereference it" } */
  memset (pa1, 0, sizeof (struct A *));     /* { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } */
  memset (pa2, 0, sizeof (PTA));            /* { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } */
  memset (pa3, 0, sizeof (PA));             /* { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } */
  memset (pa4, 0, sizeof (__typeof (pa4))); /* { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } */

  memcpy (&a, x, sizeof (&a));              /* { dg-warning "call is the same expression as the destination; did you mean to remove the addressof" } */
  memcpy (pa1, x, sizeof (pa1));            /* { dg-warning "call is the same expression as the destination; did you mean to dereference it" } */
  memcpy (pa2, x, sizeof pa2);              /* { dg-warning "call is the same expression as the destination; did you mean to dereference it" } */
  memcpy (pa3, x, sizeof (pa3));            /* { dg-warning "call is the same expression as the destination; did you mean to dereference it" } */
  memcpy (pa4, x, sizeof pa4);              /* { dg-warning "call is the same expression as the destination; did you mean to dereference it" } */
  memcpy (pa1, x, sizeof (struct A *));     /* { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } */
  memcpy (pa2, x, sizeof (PTA));            /* { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } */
  memcpy (pa3, x, sizeof (PA));             /* { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } */
  memcpy (pa4, x, sizeof (__typeof (pa4))); /* { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } */

  memcpy (x, &a, sizeof (&a));              /* { dg-warning "call is the same expression as the source; did you mean to remove the addressof" } */
  memcpy (x, pa1, sizeof (pa1));            /* { dg-warning "call is the same expression as the source; did you mean to dereference it" } */
  memcpy (x, pa2, sizeof pa2);              /* { dg-warning "call is the same expression as the source; did you mean to dereference it" } */
  memcpy (x, pa3, sizeof (pa3));            /* { dg-warning "call is the same expression as the source; did you mean to dereference it" } */
  memcpy (x, pa4, sizeof pa4);              /* { dg-warning "call is the same expression as the source; did you mean to dereference it" } */
  memcpy (x, pa1, sizeof (struct A *));     /* { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } */
  memcpy (x, pa2, sizeof (PTA));            /* { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } */
  memcpy (x, pa3, sizeof (PA));             /* { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } */
  memcpy (x, pa4, sizeof (__typeof (pa4))); /* { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } */

  memmove (&a, x, sizeof (&a));             /* { dg-warning "call is the same expression as the destination; did you mean to remove the addressof" } */
  memmove (pa1, x, sizeof (pa1));           /* { dg-warning "call is the same expression as the destination; did you mean to dereference it" } */
  memmove (pa2, x, sizeof pa2);             /* { dg-warning "call is the same expression as the destination; did you mean to dereference it" } */
  memmove (pa3, x, sizeof (pa3));           /* { dg-warning "call is the same expression as the destination; did you mean to dereference it" } */
  memmove (pa4, x, sizeof pa4);             /* { dg-warning "call is the same expression as the destination; did you mean to dereference it" } */
  memmove (pa1, x, sizeof (struct A *));    /* { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } */
  memmove (pa2, x, sizeof (PTA));           /* { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } */
  memmove (pa3, x, sizeof (PA));            /* { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } */
  memmove (pa4, x, sizeof (__typeof (pa4)));/* { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } */

  memmove (x, &a, sizeof (&a));             /* { dg-warning "call is the same expression as the source; did you mean to remove the addressof" } */
  memmove (x, pa1, sizeof (pa1));           /* { dg-warning "call is the same expression as the source; did you mean to dereference it" } */
  memmove (x, pa2, sizeof pa2);             /* { dg-warning "call is the same expression as the source; did you mean to dereference it" } */
  memmove (x, pa3, sizeof (pa3));           /* { dg-warning "call is the same expression as the source; did you mean to dereference it" } */
  memmove (x, pa4, sizeof pa4);             /* { dg-warning "call is the same expression as the source; did you mean to dereference it" } */
  memmove (x, pa1, sizeof (struct A *));    /* { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } */
  memmove (x, pa2, sizeof (PTA));           /* { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } */
  memmove (x, pa3, sizeof (PA));            /* { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } */
  memmove (x, pa4, sizeof (__typeof (pa4)));/* { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } */

  z += memcmp (&a, x, sizeof (&a));         /* { dg-warning "call is the same expression as the first source; did you mean to remove the addressof" } */
  z += memcmp (pa1, x, sizeof (pa1));       /* { dg-warning "call is the same expression as the first source; did you mean to dereference it" } */
  z += memcmp (pa2, x, sizeof pa2);         /* { dg-warning "call is the same expression as the first source; did you mean to dereference it" } */
  z += memcmp (pa3, x, sizeof (pa3));       /* { dg-warning "call is the same expression as the first source; did you mean to dereference it" } */
  z += memcmp (pa4, x, sizeof pa4);         /* { dg-warning "call is the same expression as the first source; did you mean to dereference it" } */
  z += memcmp (pa1, x, sizeof (struct A *));/* { dg-warning "call is the same pointer type \[^\n\r\]* as the first source; expected \[^\n\r\]* or an explicit length" } */
  z += memcmp (pa2, x, sizeof (PTA));       /* { dg-warning "call is the same pointer type \[^\n\r\]* as the first source; expected \[^\n\r\]* or an explicit length" } */
  z += memcmp (pa3, x, sizeof (PA));        /* { dg-warning "call is the same pointer type \[^\n\r\]* as the first source; expected \[^\n\r\]* or an explicit length" } */

  z += memcmp (x, &a, sizeof (&a));         /* { dg-warning "call is the same expression as the second source; did you mean to remove the addressof" } */
  z += memcmp (x, pa1, sizeof (pa1));       /* { dg-warning "call is the same expression as the second source; did you mean to dereference it" } */
  z += memcmp (x, pa2, sizeof pa2);         /* { dg-warning "call is the same expression as the second source; did you mean to dereference it" } */
  z += memcmp (x, pa3, sizeof (pa3));       /* { dg-warning "call is the same expression as the second source; did you mean to dereference it" } */
  z += memcmp (x, pa4, sizeof pa4);         /* { dg-warning "call is the same expression as the second source; did you mean to dereference it" } */
  z += memcmp (x, pa1, sizeof (struct A *));/* { dg-warning "call is the same pointer type \[^\n\r\]* as the second source; expected \[^\n\r\]* or an explicit length" } */
  z += memcmp (x, pa2, sizeof (PTA));       /* { dg-warning "call is the same pointer type \[^\n\r\]* as the second source; expected \[^\n\r\]* or an explicit length" } */
  z += memcmp (x, pa3, sizeof (PA));        /* { dg-warning "call is the same pointer type \[^\n\r\]* as the second source; expected \[^\n\r\]* or an explicit length" } */

  /* These are correct, no warning.  */
  memset (&a, 0, sizeof a);
  memset (&a, 0, sizeof (a));
  memset (&a, 0, sizeof (struct A));
  memset (&a, 0, sizeof (const struct A));
  memset (&a, 0, sizeof (volatile struct A));
  memset (&a, 0, sizeof (volatile const struct A));
  memset (&a, 0, sizeof (TA));
  memset (&a, 0, sizeof (__typeof (*&a)));
  memset (pa1, 0, sizeof (*pa1));
  memset (pa2, 0, sizeof (*pa3));
  memset (pa3, 0, sizeof (__typeof (*pa3)));
  /* These are probably broken, but obfuscated, no warning.  */
  memset ((void *) &a, 0, sizeof (&a));
  memset ((char *) &a, 0, sizeof (&a));
  memset (&a, 0, sizeof (&a) + 0);
  memset (&a, 0, 0 + sizeof (&a));

  /* These are correct, no warning.  */
  memcpy (&a, x, sizeof a);
  memcpy (&a, x, sizeof (a));
  memcpy (&a, x, sizeof (struct A));
  memcpy (&a, x, sizeof (const struct A));
  memcpy (&a, x, sizeof (volatile struct A));
  memcpy (&a, x, sizeof (volatile const struct A));
  memcpy (&a, x, sizeof (TA));
  memcpy (&a, x, sizeof (__typeof (*&a)));
  memcpy (pa1, x, sizeof (*pa1));
  memcpy (pa2, x, sizeof (*pa3));
  memcpy (pa3, x, sizeof (__typeof (*pa3)));
  /* These are probably broken, but obfuscated, no warning.  */
  memcpy ((void *) &a, x, sizeof (&a));
  memcpy ((char *) &a, x, sizeof (&a));
  memcpy (&a, x, sizeof (&a) + 0);
  memcpy (&a, x, 0 + sizeof (&a));

  /* These are correct, no warning.  */
  memcpy (x, &a, sizeof a);
  memcpy (x, &a, sizeof (a));
  memcpy (x, &a, sizeof (struct A));
  memcpy (x, &a, sizeof (const struct A));
  memcpy (x, &a, sizeof (volatile struct A));
  memcpy (x, &a, sizeof (volatile const struct A));
  memcpy (x, &a, sizeof (TA));
  memcpy (x, &a, sizeof (__typeof (*&a)));
  memcpy (x, pa1, sizeof (*pa1));
  memcpy (x, pa2, sizeof (*pa3));
  memcpy (x, pa3, sizeof (__typeof (*pa3)));
  /* These are probably broken, but obfuscated, no warning.  */
  memcpy (x, (void *) &a, sizeof (&a));
  memcpy (x, (char *) &a, sizeof (&a));
  memcpy (x, &a, sizeof (&a) + 0);
  memcpy (x, &a, 0 + sizeof (&a));

  /* These are correct, no warning.  */
  memmove (&a, x, sizeof a);
  memmove (&a, x, sizeof (a));
  memmove (&a, x, sizeof (struct A));
  memmove (&a, x, sizeof (const struct A));
  memmove (&a, x, sizeof (volatile struct A));
  memmove (&a, x, sizeof (volatile const struct A));
  memmove (&a, x, sizeof (TA));
  memmove (&a, x, sizeof (__typeof (*&a)));
  memmove (pa1, x, sizeof (*pa1));
  memmove (pa2, x, sizeof (*pa3));
  memmove (pa3, x, sizeof (__typeof (*pa3)));
  /* These are probably broken, but obfuscated, no warning.  */
  memmove ((void *) &a, x, sizeof (&a));
  memmove ((char *) &a, x, sizeof (&a));
  memmove (&a, x, sizeof (&a) + 0);
  memmove (&a, x, 0 + sizeof (&a));

  /* These are correct, no warning.  */
  memmove (x, &a, sizeof a);
  memmove (x, &a, sizeof (a));
  memmove (x, &a, sizeof (struct A));
  memmove (x, &a, sizeof (const struct A));
  memmove (x, &a, sizeof (volatile struct A));
  memmove (x, &a, sizeof (volatile const struct A));
  memmove (x, &a, sizeof (TA));
  memmove (x, &a, sizeof (__typeof (*&a)));
  memmove (x, pa1, sizeof (*pa1));
  memmove (x, pa2, sizeof (*pa3));
  memmove (x, pa3, sizeof (__typeof (*pa3)));
  /* These are probably broken, but obfuscated, no warning.  */
  memmove (x, (void *) &a, sizeof (&a));
  memmove (x, (char *) &a, sizeof (&a));
  memmove (x, &a, sizeof (&a) + 0);
  memmove (x, &a, 0 + sizeof (&a));

  /* These are correct, no warning.  */
  z += memcmp (&a, x, sizeof a);
  z += memcmp (&a, x, sizeof (a));
  z += memcmp (&a, x, sizeof (struct A));
  z += memcmp (&a, x, sizeof (const struct A));
  z += memcmp (&a, x, sizeof (volatile struct A));
  z += memcmp (&a, x, sizeof (volatile const struct A));
  z += memcmp (&a, x, sizeof (TA));
  z += memcmp (&a, x, sizeof (__typeof (*&a)));
  z += memcmp (pa1, x, sizeof (*pa1));
  z += memcmp (pa2, x, sizeof (*pa3));
  z += memcmp (pa3, x, sizeof (__typeof (*pa3)));
  /* These are probably broken, but obfuscated, no warning.  */
  z += memcmp ((void *) &a, x, sizeof (&a));
  z += memcmp ((char *) &a, x, sizeof (&a));
  z += memcmp (&a, x, sizeof (&a) + 0);
  z += memcmp (&a, x, 0 + sizeof (&a));

  /* These are correct, no warning.  */
  z += memcmp (x, &a, sizeof a);
  z += memcmp (x, &a, sizeof (a));
  z += memcmp (x, &a, sizeof (struct A));
  z += memcmp (x, &a, sizeof (const struct A));
  z += memcmp (x, &a, sizeof (volatile struct A));
  z += memcmp (x, &a, sizeof (volatile const struct A));
  z += memcmp (x, &a, sizeof (TA));
  z += memcmp (x, &a, sizeof (__typeof (*&a)));
  z += memcmp (x, pa1, sizeof (*pa1));
  z += memcmp (x, pa2, sizeof (*pa3));
  z += memcmp (x, pa3, sizeof (__typeof (*pa3)));
  /* These are probably broken, but obfuscated, no warning.  */
  z += memcmp (x, (void *) &a, sizeof (&a));
  z += memcmp (x, (char *) &a, sizeof (&a));
  z += memcmp (x, &a, sizeof (&a) + 0);
  z += memcmp (x, &a, 0 + sizeof (&a));

  return z;
}

int
f2 (void *x, int z)
{
  struct B b, *pb1 = &b;
  TB *pb2 = &b;
  PB pb3 = &b;
  PTB pb4 = &b;
  memset (&b, 0, sizeof (&b));              /* { dg-warning "call is the same expression as the destination; did you mean to remove the addressof" } */
  memset (pb1, 0, sizeof (pb1));            /* { dg-warning "call is the same expression as the destination; did you mean to dereference it" } */
  memset (pb2, 0, sizeof pb2);              /* { dg-warning "call is the same expression as the destination; did you mean to dereference it" } */
  memset (pb3, 0, sizeof (pb3));            /* { dg-warning "call is the same expression as the destination; did you mean to dereference it" } */
  memset (pb4, 0, sizeof pb4);              /* { dg-warning "call is the same expression as the destination; did you mean to dereference it" } */
  memset (pb1, 0, sizeof (struct B *));     /* { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } */
  memset (pb2, 0, sizeof (PTB));            /* { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } */
  memset (pb3, 0, sizeof (PB));             /* { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } */
  memset (pb4, 0, sizeof (__typeof (pb4))); /* { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } */

  memcpy (&b, x, sizeof (&b));              /* { dg-warning "call is the same expression as the destination; did you mean to remove the addressof" } */
  memcpy (pb1, x, sizeof (pb1));            /* { dg-warning "call is the same expression as the destination; did you mean to dereference it" } */
  memcpy (pb2, x, sizeof pb2);              /* { dg-warning "call is the same expression as the destination; did you mean to dereference it" } */
  memcpy (pb3, x, sizeof (pb3));            /* { dg-warning "call is the same expression as the destination; did you mean to dereference it" } */
  memcpy (pb4, x, sizeof pb4);              /* { dg-warning "call is the same expression as the destination; did you mean to dereference it" } */
  memcpy (pb1, x, sizeof (struct B *));     /* { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } */
  memcpy (pb2, x, sizeof (PTB));            /* { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } */
  memcpy (pb3, x, sizeof (PB));             /* { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } */
  memcpy (pb4, x, sizeof (__typeof (pb4))); /* { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } */

  memcpy (x, &b, sizeof (&b));              /* { dg-warning "call is the same expression as the source; did you mean to remove the addressof" } */
  memcpy (x, pb1, sizeof (pb1));            /* { dg-warning "call is the same expression as the source; did you mean to dereference it" } */
  memcpy (x, pb2, sizeof pb2);              /* { dg-warning "call is the same expression as the source; did you mean to dereference it" } */
  memcpy (x, pb3, sizeof (pb3));            /* { dg-warning "call is the same expression as the source; did you mean to dereference it" } */
  memcpy (x, pb4, sizeof pb4);              /* { dg-warning "call is the same expression as the source; did you mean to dereference it" } */
  memcpy (x, pb1, sizeof (struct B *));     /* { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } */
  memcpy (x, pb2, sizeof (PTB));            /* { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } */
  memcpy (x, pb3, sizeof (PB));             /* { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } */
  memcpy (x, pb4, sizeof (__typeof (pb4))); /* { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } */

  memmove (&b, x, sizeof (&b));             /* { dg-warning "call is the same expression as the destination; did you mean to remove the addressof" } */
  memmove (pb1, x, sizeof (pb1));           /* { dg-warning "call is the same expression as the destination; did you mean to dereference it" } */
  memmove (pb2, x, sizeof pb2);             /* { dg-warning "call is the same expression as the destination; did you mean to dereference it" } */
  memmove (pb3, x, sizeof (pb3));           /* { dg-warning "call is the same expression as the destination; did you mean to dereference it" } */
  memmove (pb4, x, sizeof pb4);             /* { dg-warning "call is the same expression as the destination; did you mean to dereference it" } */
  memmove (pb1, x, sizeof (struct B *));    /* { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } */
  memmove (pb2, x, sizeof (PTB));           /* { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } */
  memmove (pb3, x, sizeof (PB));            /* { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } */
  memmove (pb4, x, sizeof (__typeof (pb4)));/* { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } */

  memmove (x, &b, sizeof (&b));             /* { dg-warning "call is the same expression as the source; did you mean to remove the addressof" } */
  memmove (x, pb1, sizeof (pb1));           /* { dg-warning "call is the same expression as the source; did you mean to dereference it" } */
  memmove (x, pb2, sizeof pb2);             /* { dg-warning "call is the same expression as the source; did you mean to dereference it" } */
  memmove (x, pb3, sizeof (pb3));           /* { dg-warning "call is the same expression as the source; did you mean to dereference it" } */
  memmove (x, pb4, sizeof pb4);             /* { dg-warning "call is the same expression as the source; did you mean to dereference it" } */
  memmove (x, pb1, sizeof (struct B *));    /* { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } */
  memmove (x, pb2, sizeof (PTB));           /* { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } */
  memmove (x, pb3, sizeof (PB));            /* { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } */
  memmove (x, pb4, sizeof (__typeof (pb4)));/* { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } */

  z += memcmp (&b, x, sizeof (&b));         /* { dg-warning "call is the same expression as the first source; did you mean to remove the addressof" } */
  z += memcmp (pb1, x, sizeof (pb1));       /* { dg-warning "call is the same expression as the first source; did you mean to dereference it" } */
  z += memcmp (pb2, x, sizeof pb2);         /* { dg-warning "call is the same expression as the first source; did you mean to dereference it" } */
  z += memcmp (pb3, x, sizeof (pb3));       /* { dg-warning "call is the same expression as the first source; did you mean to dereference it" } */
  z += memcmp (pb4, x, sizeof pb4);         /* { dg-warning "call is the same expression as the first source; did you mean to dereference it" } */
  z += memcmp (pb1, x, sizeof (struct B *));/* { dg-warning "call is the same pointer type \[^\n\r\]* as the first source; expected \[^\n\r\]* or an explicit length" } */
  z += memcmp (pb2, x, sizeof (PTB));       /* { dg-warning "call is the same pointer type \[^\n\r\]* as the first source; expected \[^\n\r\]* or an explicit length" } */
  z += memcmp (pb3, x, sizeof (PB));        /* { dg-warning "call is the same pointer type \[^\n\r\]* as the first source; expected \[^\n\r\]* or an explicit length" } */

  z += memcmp (x, &b, sizeof (&b));         /* { dg-warning "call is the same expression as the second source; did you mean to remove the addressof" } */
  z += memcmp (x, pb1, sizeof (pb1));       /* { dg-warning "call is the same expression as the second source; did you mean to dereference it" } */
  z += memcmp (x, pb2, sizeof pb2);         /* { dg-warning "call is the same expression as the second source; did you mean to dereference it" } */
  z += memcmp (x, pb3, sizeof (pb3));       /* { dg-warning "call is the same expression as the second source; did you mean to dereference it" } */
  z += memcmp (x, pb4, sizeof pb4);         /* { dg-warning "call is the same expression as the second source; did you mean to dereference it" } */
  z += memcmp (x, pb1, sizeof (struct B *));/* { dg-warning "call is the same pointer type \[^\n\r\]* as the second source; expected \[^\n\r\]* or an explicit length" } */
  z += memcmp (x, pb2, sizeof (PTB));       /* { dg-warning "call is the same pointer type \[^\n\r\]* as the second source; expected \[^\n\r\]* or an explicit length" } */
  z += memcmp (x, pb3, sizeof (PB));        /* { dg-warning "call is the same pointer type \[^\n\r\]* as the second source; expected \[^\n\r\]* or an explicit length" } */

  /* These are correct, no warning.  */
  memset (&b, 0, sizeof b);
  memset (&b, 0, sizeof (b));
  memset (&b, 0, sizeof (struct B));
  memset (&b, 0, sizeof (const struct B));
  memset (&b, 0, sizeof (volatile struct B));
  memset (&b, 0, sizeof (volatile const struct B));
  memset (&b, 0, sizeof (TB));
  memset (&b, 0, sizeof (__typeof (*&b)));
  memset (pb1, 0, sizeof (*pb1));
  memset (pb2, 0, sizeof (*pb3));
  memset (pb3, 0, sizeof (__typeof (*pb3)));
  /* These are probably broken, but obfuscated, no warning.  */
  memset ((void *) &b, 0, sizeof (&b));
  memset ((char *) &b, 0, sizeof (&b));
  memset (&b, 0, sizeof (&b) + 0);
  memset (&b, 0, 0 + sizeof (&b));

  /* These are correct, no warning.  */
  memcpy (&b, x, sizeof b);
  memcpy (&b, x, sizeof (b));
  memcpy (&b, x, sizeof (struct B));
  memcpy (&b, x, sizeof (const struct B));
  memcpy (&b, x, sizeof (volatile struct B));
  memcpy (&b, x, sizeof (volatile const struct B));
  memcpy (&b, x, sizeof (TB));
  memcpy (&b, x, sizeof (__typeof (*&b)));
  memcpy (pb1, x, sizeof (*pb1));
  memcpy (pb2, x, sizeof (*pb3));
  memcpy (pb3, x, sizeof (__typeof (*pb3)));
  /* These are probably broken, but obfuscated, no warning.  */
  memcpy ((void *) &b, x, sizeof (&b));
  memcpy ((char *) &b, x, sizeof (&b));
  memcpy (&b, x, sizeof (&b) + 0);
  memcpy (&b, x, 0 + sizeof (&b));

  /* These are correct, no warning.  */
  memcpy (x, &b, sizeof b);
  memcpy (x, &b, sizeof (b));
  memcpy (x, &b, sizeof (struct B));
  memcpy (x, &b, sizeof (const struct B));
  memcpy (x, &b, sizeof (volatile struct B));
  memcpy (x, &b, sizeof (volatile const struct B));
  memcpy (x, &b, sizeof (TB));
  memcpy (x, &b, sizeof (__typeof (*&b)));
  memcpy (x, pb1, sizeof (*pb1));
  memcpy (x, pb2, sizeof (*pb3));
  memcpy (x, pb3, sizeof (__typeof (*pb3)));
  /* These are probably broken, but obfuscated, no warning.  */
  memcpy (x, (void *) &b, sizeof (&b));
  memcpy (x, (char *) &b, sizeof (&b));
  memcpy (x, &b, sizeof (&b) + 0);
  memcpy (x, &b, 0 + sizeof (&b));

  /* These are correct, no warning.  */
  memmove (&b, x, sizeof b);
  memmove (&b, x, sizeof (b));
  memmove (&b, x, sizeof (struct B));
  memmove (&b, x, sizeof (const struct B));
  memmove (&b, x, sizeof (volatile struct B));
  memmove (&b, x, sizeof (volatile const struct B));
  memmove (&b, x, sizeof (TB));
  memmove (&b, x, sizeof (__typeof (*&b)));
  memmove (pb1, x, sizeof (*pb1));
  memmove (pb2, x, sizeof (*pb3));
  memmove (pb3, x, sizeof (__typeof (*pb3)));
  /* These are probably broken, but obfuscated, no warning.  */
  memmove ((void *) &b, x, sizeof (&b));
  memmove ((char *) &b, x, sizeof (&b));
  memmove (&b, x, sizeof (&b) + 0);
  memmove (&b, x, 0 + sizeof (&b));

  /* These are correct, no warning.  */
  memmove (x, &b, sizeof b);
  memmove (x, &b, sizeof (b));
  memmove (x, &b, sizeof (struct B));
  memmove (x, &b, sizeof (const struct B));
  memmove (x, &b, sizeof (volatile struct B));
  memmove (x, &b, sizeof (volatile const struct B));
  memmove (x, &b, sizeof (TB));
  memmove (x, &b, sizeof (__typeof (*&b)));
  memmove (x, pb1, sizeof (*pb1));
  memmove (x, pb2, sizeof (*pb3));
  memmove (x, pb3, sizeof (__typeof (*pb3)));
  /* These are probably broken, but obfuscated, no warning.  */
  memmove (x, (void *) &b, sizeof (&b));
  memmove (x, (char *) &b, sizeof (&b));
  memmove (x, &b, sizeof (&b) + 0);
  memmove (x, &b, 0 + sizeof (&b));

  /* These are correct, no warning.  */
  z += memcmp (&b, x, sizeof b);
  z += memcmp (&b, x, sizeof (b));
  z += memcmp (&b, x, sizeof (struct B));
  z += memcmp (&b, x, sizeof (const struct B));
  z += memcmp (&b, x, sizeof (volatile struct B));
  z += memcmp (&b, x, sizeof (volatile const struct B));
  z += memcmp (&b, x, sizeof (TB));
  z += memcmp (&b, x, sizeof (__typeof (*&b)));
  z += memcmp (pb1, x, sizeof (*pb1));
  z += memcmp (pb2, x, sizeof (*pb3));
  z += memcmp (pb3, x, sizeof (__typeof (*pb3)));
  /* These are probably broken, but obfuscated, no warning.  */
  z += memcmp ((void *) &b, x, sizeof (&b));
  z += memcmp ((char *) &b, x, sizeof (&b));
  z += memcmp (&b, x, sizeof (&b) + 0);
  z += memcmp (&b, x, 0 + sizeof (&b));

  /* These are correct, no warning.  */
  z += memcmp (x, &b, sizeof b);
  z += memcmp (x, &b, sizeof (b));
  z += memcmp (x, &b, sizeof (struct B));
  z += memcmp (x, &b, sizeof (const struct B));
  z += memcmp (x, &b, sizeof (volatile struct B));
  z += memcmp (x, &b, sizeof (volatile const struct B));
  z += memcmp (x, &b, sizeof (TB));
  z += memcmp (x, &b, sizeof (__typeof (*&b)));
  z += memcmp (x, pb1, sizeof (*pb1));
  z += memcmp (x, pb2, sizeof (*pb3));
  z += memcmp (x, pb3, sizeof (__typeof (*pb3)));
  /* These are probably broken, but obfuscated, no warning.  */
  z += memcmp (x, (void *) &b, sizeof (&b));
  z += memcmp (x, (char *) &b, sizeof (&b));
  z += memcmp (x, &b, sizeof (&b) + 0);
  z += memcmp (x, &b, 0 + sizeof (&b));

  return z;
}

int
f3 (void *x, char *y, int z, X w)
{
  unsigned char *y1 = (unsigned char *) __builtin_alloca (z + 16);
  char buf1[7];
  signed char buf2[z + 32];
  long buf3[17];
  int *buf4[9];
  signed char *y2 = buf2;
  char c;
  char *y3;
  memset (y, 0, sizeof (y));                /* { dg-warning "call is the same expression as the destination; did you mean to provide an explicit length" } */
  memset (y1, 0, sizeof (y1));              /* { dg-warning "call is the same expression as the destination; did you mean to provide an explicit length" } */
  memset (y2, 0, sizeof (y2));              /* { dg-warning "call is the same expression as the destination; did you mean to provide an explicit length" } */
  memset (&c, 0, sizeof (&c));              /* { dg-warning "call is the same expression as the destination; did you mean to remove the addressof" } */
  memset (w, 0, sizeof w);                  /* { dg-warning "call is the same expression as the destination; did you mean to dereference it" } */

  memcpy (y, x, sizeof (y));                /* { dg-warning "call is the same expression as the destination; did you mean to provide an explicit length" } */
  memcpy (y1, x, sizeof (y1));              /* { dg-warning "call is the same expression as the destination; did you mean to provide an explicit length" } */
  memcpy (y2, x, sizeof (y2));              /* { dg-warning "call is the same expression as the destination; did you mean to provide an explicit length" } */
  memcpy (&c, x, sizeof (&c));              /* { dg-warning "call is the same expression as the destination; did you mean to remove the addressof" } */
  memcpy (w, x, sizeof w);                  /* { dg-warning "call is the same expression as the destination; did you mean to dereference it" } */

  memcpy (x, y, sizeof (y));                /* { dg-warning "call is the same expression as the source; did you mean to provide an explicit length" } */
  memcpy (x, y1, sizeof (y1));              /* { dg-warning "call is the same expression as the source; did you mean to provide an explicit length" } */
  memcpy (x, y2, sizeof (y2));              /* { dg-warning "call is the same expression as the source; did you mean to provide an explicit length" } */
  memcpy (x, &c, sizeof (&c));              /* { dg-warning "call is the same expression as the source; did you mean to remove the addressof" } */
  memcpy (x, w, sizeof w);                  /* { dg-warning "call is the same expression as the source; did you mean to dereference it" } */

  memmove (y, x, sizeof (y));               /* { dg-warning "call is the same expression as the destination; did you mean to provide an explicit length" } */
  memmove (y1, x, sizeof (y1));             /* { dg-warning "call is the same expression as the destination; did you mean to provide an explicit length" } */
  memmove (y2, x, sizeof (y2));             /* { dg-warning "call is the same expression as the destination; did you mean to provide an explicit length" } */
  memmove (&c, x, sizeof (&c));             /* { dg-warning "call is the same expression as the destination; did you mean to remove the addressof" } */
  memmove (w, x, sizeof w);                 /* { dg-warning "call is the same expression as the destination; did you mean to dereference it" } */

  memmove (x, y, sizeof (y));               /* { dg-warning "call is the same expression as the source; did you mean to provide an explicit length" } */
  memmove (x, y1, sizeof (y1));             /* { dg-warning "call is the same expression as the source; did you mean to provide an explicit length" } */
  memmove (x, y2, sizeof (y2));             /* { dg-warning "call is the same expression as the source; did you mean to provide an explicit length" } */
  memmove (x, &c, sizeof (&c));             /* { dg-warning "call is the same expression as the source; did you mean to remove the addressof" } */
  memmove (x, w, sizeof w);                 /* { dg-warning "call is the same expression as the source; did you mean to dereference it" } */

  z += memcmp (y, x, sizeof (y));           /* { dg-warning "call is the same expression as the first source; did you mean to provide an explicit length" } */
  z += memcmp (y1, x, sizeof (y1));         /* { dg-warning "call is the same expression as the first source; did you mean to provide an explicit length" } */
  z += memcmp (y2, x, sizeof (y2));         /* { dg-warning "call is the same expression as the first source; did you mean to provide an explicit length" } */
  z += memcmp (&c, x, sizeof (&c));         /* { dg-warning "call is the same expression as the first source; did you mean to remove the addressof" } */
  z += memcmp (w, x, sizeof w);             /* { dg-warning "call is the same expression as the first source; did you mean to dereference it" } */

  z += memcmp (x, y, sizeof (y));           /* { dg-warning "call is the same expression as the second source; did you mean to provide an explicit length" } */
  z += memcmp (x, y1, sizeof (y1));         /* { dg-warning "call is the same expression as the second source; did you mean to provide an explicit length" } */
  z += memcmp (x, y2, sizeof (y2));         /* { dg-warning "call is the same expression as the second source; did you mean to provide an explicit length" } */
  z += memcmp (x, &c, sizeof (&c));         /* { dg-warning "call is the same expression as the second source; did you mean to remove the addressof" } */
  z += memcmp (x, w, sizeof w);             /* { dg-warning "call is the same expression as the second source; did you mean to dereference it" } */

  /* These are correct, no warning.  */
  memset (y, 0, sizeof (*y));
  memset (y1, 0, sizeof (*y2));
  memset (buf1, 0, sizeof buf1);
  memset (buf3, 0, sizeof (buf3));
  memset (&buf3[0], 0, sizeof (buf3));
  memset (&buf4[0], 0, sizeof (buf4));
  memset (w, 0, sizeof (X));
  /* These are probably broken, but obfuscated, no warning.  */
  memset ((void *) y, 0, sizeof (y));
  memset ((char *) y1, 0, sizeof (y2));
  memset (y, 0, sizeof (y) + 0);
  memset (y1, 0, 0 + sizeof (y2));
  memset ((void *) &c, 0, sizeof (&c));
  memset ((signed char *) &c, 0, sizeof (&c));
  memset (&c, 0, sizeof (&c) + 0);
  memset (&c, 0, 0 + sizeof (&c));

  /* These are correct, no warning.  */
  memcpy (y, x, sizeof (*y));
  memcpy (y1, x, sizeof (*y2));
  memcpy (buf1, x, sizeof buf1);
  memcpy (buf3, x, sizeof (buf3));
  memcpy (&buf3[0], x, sizeof (buf3));
  memcpy (&buf4[0], x, sizeof (buf4));
  memcpy (&y3, y, sizeof (y3));
  memcpy ((char *) &y3, y, sizeof (y3));
  memcpy (w, x, sizeof (X));
  /* These are probably broken, but obfuscated, no warning.  */
  memcpy ((void *) y, x, sizeof (y));
  memcpy ((char *) y1, x, sizeof (y2));
  memcpy (y, x, sizeof (y) + 0);
  memcpy (y1, x, 0 + sizeof (y2));
  memcpy ((void *) &c, x, sizeof (&c));
  memcpy ((signed char *) &c, x, sizeof (&c));
  memcpy (&c, x, sizeof (&c) + 0);
  memcpy (&c, x, 0 + sizeof (&c));

  /* These are correct, no warning.  */
  memcpy (x, y, sizeof (*y));
  memcpy (x, y1, sizeof (*y2));
  memcpy (x, buf1, sizeof buf1);
  memcpy (x, buf3, sizeof (buf3));
  memcpy (x, &buf3[0], sizeof (buf3));
  memcpy (x, &buf4[0], sizeof (buf4));
  memcpy (y, &y3, sizeof (y3));
  memcpy (y, (char *) &y3, sizeof (y3));
  memcpy (x, w, sizeof (X));
  /* These are probably broken, but obfuscated, no warning.  */
  memcpy (x, (void *) y, sizeof (y));
  memcpy (x, (char *) y1, sizeof (y2));
  memcpy (x, y, sizeof (y) + 0);
  memcpy (x, y1, 0 + sizeof (y2));
  memcpy (x, (void *) &c, sizeof (&c));
  memcpy (x, (signed char *) &c, sizeof (&c));
  memcpy (x, &c, sizeof (&c) + 0);
  memcpy (x, &c, 0 + sizeof (&c));

  /* These are correct, no warning.  */
  memmove (y, x, sizeof (*y));
  memmove (y1, x, sizeof (*y2));
  memmove (buf1, x, sizeof buf1);
  memmove (buf3, x, sizeof (buf3));
  memmove (&buf3[0], x, sizeof (buf3));
  memmove (&buf4[0], x, sizeof (buf4));
  memmove (&y3, y, sizeof (y3));
  memmove ((char *) &y3, y, sizeof (y3));
  memmove (w, x, sizeof (X));
  /* These are probably broken, but obfuscated, no warning.  */
  memmove ((void *) y, x, sizeof (y));
  memmove ((char *) y1, x, sizeof (y2));
  memmove (y, x, sizeof (y) + 0);
  memmove (y1, x, 0 + sizeof (y2));
  memmove ((void *) &c, x, sizeof (&c));
  memmove ((signed char *) &c, x, sizeof (&c));
  memmove (&c, x, sizeof (&c) + 0);
  memmove (&c, x, 0 + sizeof (&c));

  /* These are correct, no warning.  */
  memmove (x, y, sizeof (*y));
  memmove (x, y1, sizeof (*y2));
  memmove (x, buf1, sizeof buf1);
  memmove (x, buf3, sizeof (buf3));
  memmove (x, &buf3[0], sizeof (buf3));
  memmove (x, &buf4[0], sizeof (buf4));
  memmove (y, &y3, sizeof (y3));
  memmove (y, (char *) &y3, sizeof (y3));
  memmove (x, w, sizeof (X));
  /* These are probably broken, but obfuscated, no warning.  */
  memmove (x, (void *) y, sizeof (y));
  memmove (x, (char *) y1, sizeof (y2));
  memmove (x, y, sizeof (y) + 0);
  memmove (x, y1, 0 + sizeof (y2));
  memmove (x, (void *) &c, sizeof (&c));
  memmove (x, (signed char *) &c, sizeof (&c));
  memmove (x, &c, sizeof (&c) + 0);
  memmove (x, &c, 0 + sizeof (&c));

  /* These are correct, no warning.  */
  z += memcmp (y, x, sizeof (*y));
  z += memcmp (y1, x, sizeof (*y2));
  z += memcmp (buf1, x, sizeof buf1);
  z += memcmp (buf3, x, sizeof (buf3));
  z += memcmp (&buf3[0], x, sizeof (buf3));
  z += memcmp (&buf4[0], x, sizeof (buf4));
  z += memcmp (&y3, y, sizeof (y3));
  z += memcmp ((char *) &y3, y, sizeof (y3));
  z += memcmp (w, x, sizeof (X));
  /* These are probably broken, but obfuscated, no warning.  */
  z += memcmp ((void *) y, x, sizeof (y));
  z += memcmp ((char *) y1, x, sizeof (y2));
  z += memcmp (y, x, sizeof (y) + 0);
  z += memcmp (y1, x, 0 + sizeof (y2));
  z += memcmp ((void *) &c, x, sizeof (&c));
  z += memcmp ((signed char *) &c, x, sizeof (&c));
  z += memcmp (&c, x, sizeof (&c) + 0);
  z += memcmp (&c, x, 0 + sizeof (&c));

  /* These are correct, no warning.  */
  z += memcmp (x, y, sizeof (*y));
  z += memcmp (x, y1, sizeof (*y2));
  z += memcmp (x, buf1, sizeof buf1);
  z += memcmp (x, buf3, sizeof (buf3));
  z += memcmp (x, &buf3[0], sizeof (buf3));
  z += memcmp (x, &buf4[0], sizeof (buf4));
  z += memcmp (y, &y3, sizeof (y3));
  z += memcmp (y, (char *) &y3, sizeof (y3));
  z += memcmp (x, w, sizeof (X));
  /* These are probably broken, but obfuscated, no warning.  */
  z += memcmp (x, (void *) y, sizeof (y));
  z += memcmp (x, (char *) y1, sizeof (y2));
  z += memcmp (x, y, sizeof (y) + 0);
  z += memcmp (x, y1, 0 + sizeof (y2));
  z += memcmp (x, (void *) &c, sizeof (&c));
  z += memcmp (x, (signed char *) &c, sizeof (&c));
  z += memcmp (x, &c, sizeof (&c) + 0);
  z += memcmp (x, &c, 0 + sizeof (&c));

  return z;
}

int
f4 (char *x, char **y, int z, char w[64])
{
  const char *s1 = "foobarbaz";
  const char *s2 = "abcde12345678";
  strncpy (x, s1, sizeof (s1));             /* { dg-warning "call is the same expression as the source; did you mean to provide an explicit length" } */
  strncat (x, s2, sizeof (s2));             /* { dg-warning "call is the same expression as the source; did you mean to provide an explicit length" } */
  stpncpy (x, s1, sizeof (s1));             /* { dg-warning "call is the same expression as the source; did you mean to provide an explicit length" } */
  y[0] = strndup (s1, sizeof (s1));         /* { dg-warning "call is the same expression as the source; did you mean to provide an explicit length" } */
  z += strncmp (s1, s2, sizeof (s1));       /* { dg-warning "call is the same expression as the first source; did you mean to provide an explicit length" } */
  z += strncmp (s1, s2, sizeof (s2));       /* { dg-warning "call is the same expression as the second source; did you mean to provide an explicit length" } */
  z += strncasecmp (s1, s2, sizeof (s1));   /* { dg-warning "call is the same expression as the first source; did you mean to provide an explicit length" } */
  z += strncasecmp (s1, s2, sizeof (s2));   /* { dg-warning "call is the same expression as the second source; did you mean to provide an explicit length" } */

  strncpy (w, s1, sizeof (w));              /* { dg-warning "call is the same expression as the destination; did you mean to provide an explicit length" } */
  strncat (w, s2, sizeof (w));              /* { dg-warning "call is the same expression as the destination; did you mean to provide an explicit length" } */
  stpncpy (w, s1, sizeof (w));              /* { dg-warning "call is the same expression as the destination; did you mean to provide an explicit length" } */

  /* These are correct, no warning.  */
  const char s3[] = "foobarbaz";
  const char s4[] = "abcde12345678";
  strncpy (x, s3, sizeof (s3));
  strncat (x, s4, sizeof (s4));
  stpncpy (x, s3, sizeof (s3));
  y[1] = strndup (s3, sizeof (s3));
  z += strncmp (s3, s4, sizeof (s3));
  z += strncmp (s3, s4, sizeof (s4));
  z += strncasecmp (s3, s4, sizeof (s3));
  z += strncasecmp (s3, s4, sizeof (s4));

  return z;
}

/* { dg-prune-output "\[\n\r\]*will always overflow\[\n\r\]*" } */