gcc/testsuite/gcc.dg/Wstringop-overflow-9.c

/* PR middle-end/88771 - Misleading -Werror=array-bounds error
   Verify that the warning issued for calls to "bounded" string
   functions is -Wstringop-overflow with the right wording.
   { dg-do compile }
   { dg-options "-O2 -Wall" } */

#define PTRDIFF_MAX   __PTRDIFF_MAX__
#define SIZE_MAX      __SIZE_MAX__

typedef __SIZE_TYPE__ size_t;

extern void* memcpy (void*, const void*, size_t);
extern void* memmove (void*, const void*, size_t);
extern void* memset (void*, int, size_t);

extern char* stpncpy (char*, const char*, size_t);

extern char* strncat (char*, const char*, size_t);
extern char* strncpy (char*, const char*, 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);

extern size_t strnlen (const char*, size_t);

extern char *d;
extern const char *s;


void test_memcpy (void)
{
  memcpy (d, s, SIZE_MAX);        /* { dg-warning ".memcpy. specified bound \[0-9\]+ exceeds maximum object size \[0-9\]+ \\\[-Wstringop-overflow=\\\]" } */
}

void test_memmove (void)
{
  memmove (d, s, SIZE_MAX - 1);   /* { dg-warning ".memmove. specified bound \[0-9\]+ exceeds maximum object size \[0-9\]+ \\\[-Wstringop-overflow=\\\]" } */
}

void test_memset (void)
{
  memset (d, 0, SIZE_MAX - 2);    /* { dg-warning ".memset. specified \(bound|size\) \[0-9\]+ exceeds maximum object size \[0-9\]+ \\\[-Wstringop-overflow=\\\]" } */
}


char* test_stpncpy (void)
{
  return stpncpy (d, s, SIZE_MAX - 4);   /* { dg-warning ".stpncpy. specified bound \[0-9\]+ exceeds maximum object size \[0-9\]+ \\\[-Wstringop-overflow=\\\]" } */
}


void test_strncat (void)
{
  strncat (d, s, SIZE_MAX - 3);   /* { dg-warning ".strncat. specified bound \[0-9\]+ exceeds maximum object size \[0-9\]+ \\\[-Wstringop-overflow=\\\]" } */
}

void test_strncpy (void)
{
  strncpy (d, s, SIZE_MAX - 4);   /* { dg-warning ".strncpy. specified bound \[0-9\]+ exceeds maximum object size \[0-9\]+ \\\[-Wstringop-overflow=\\\]" } */
}

char* test_strndup (void)
{
  return strndup (s, SIZE_MAX - 5);   /* { dg-warning ".strndup. specified bound \[0-9\]+ exceeds maximum object size \[0-9\]+ \\\[-Wstringop-overread" } */
}

size_t test_strnlen (void)
{
  return strnlen (s, SIZE_MAX - 6);   /* { dg-warning ".strnlen. specified bound \[0-9\]+ exceeds maximum object size \[0-9\]+ \\\[-Wstringop-overread" } */
}