So we choose strncpy(_, _, 0): it requires an extra header,
	but it's standard and should be very efficient.

	GCC 7 has an unfortunate habit of optimizing out strncpy calls (see
	https://golang.org/issue/21196), so the arguments here need to be global
	variables with external linkage in order to ensure that the call traps all the
	way down into libc.
	*/
	strncpy(&x_cgo_yield_strncpy_dst, &x_cgo_yield_strncpy_src,

-   <http://www.gnu.org/licenses/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #include <string.h>
-#include <memcopy.h>
 
 #undef strncpy
 
 #ifndef STRNCPY
-#define STRNCPY strncpy
+ #define STRNCPY strncpy
 #endif
 
 char *
 STRNCPY (char *s1, const char *s2, size_t n)
 {
-  char c;
-  char *s = s1;
-
-  --s1;
-
-  if (n >= 4)
-    {

	printf("\tdesc string\n");
	printf("} {\n");
	qsort(errors, nelem(errors), sizeof errors[0], tuplecmp);
	for(i=0; i<nelem(errors); i++) {
		e = errors[i].num;
		if(i > 0 && errors[i-1].num == e)
			continue;
		strncpy(buf, strerror(e), sizeof(buf) - 1);
		buf[sizeof(buf) - 1] = '\0';
		// lowercase first letter: Bad -> bad, but STREAM -> STREAM.
		if(A <= buf[0] && buf[0] <= Z && a <= buf[1] && buf[1] <= z)
			buf[0] += a - A;

#ifdef _MSC_VER
// Temporarily disable warning 4996 (deprecated function).
# pragma warning(push)
# pragma warning(disable:4996)
#endif

inline const char* StrNCpy(char* dest, const char* src, size_t n) {
  return strncpy(dest, src, n);
}

// ChDir(), FReopen(), FDOpen(), Read(), Write(), Close(), and
// StrError() aren't needed on Windows CE at this time and thus not
// defined there.

#ifdef _MSC_VER
// Temporarily disable warning 4996 (deprecated function).
# pragma warning(push)
# pragma warning(disable:4996)
#endif

inline const char* StrNCpy(char* dest, const char* src, size_t n) {
  return strncpy(dest, src, n);
}

// ChDir(), FReopen(), FDOpen(), Read(), Write(), Close(), and
// StrError() aren't needed on Windows CE at this time and thus not
// defined there.

  const int BUFFER_SIZE = 10;
  char buffer[BUFFER_SIZE];
  std::strncpy(buffer, "VALID", BUFFER_SIZE);
  TFE_OpSetAttrString(op, "padding", buffer, std::strlen(buffer));
  // Overwriting value in "buffer", should be fine since TFE_Op
  // shouldn't be holding on to it.
  std::strncpy(buffer, "NHWC", BUFFER_SIZE);
  TFE_OpSetAttrString(op, "data_format", buffer, std::strlen(buffer));

	// nothing to run, just make sure this compiles
	var x C.size_t

	C.calloc(x, x)
	C.malloc(x)
	C.realloc(nil, x)
	C.memcpy(nil, nil, x)
	C.memcmp(nil, nil, x)
	C.memmove(nil, nil, x)
	C.strncpy(nil, nil, x)
	C.strncmp(nil, nil, x)
	C.strncat(nil, nil, x)
	x = C.strxfrm(nil, nil, x)
	C.memchr(nil, 0, x)
	x = C.strcspn(nil, nil)
	x = C.strspn(nil, nil)
	C.memset(nil, 0, x)

  auto attrs = oper->node.attrs();
  int count = 0;
  AttrValueMap::const_iterator it;
  for (it = attrs.begin(); it != attrs.end(); it++) {
    if (count == i) {
      strncpy(output, it->first.c_str(), it->first.length());
      status->status = absl::OkStatus();
      return;
    }
    count++;
  }
  status->status = OutOfRange("Operation only has ", count,