Method make_clex_string

sql/sql_class.h:1458–1472

Methods to copy a string value on memory root, but also allocate on memory root LEX_CSTRING itself and return a pointer to it. */

    and return a pointer to it.
  */
  LEX_CSTRING *make_clex_string(const char* str, size_t length) const
  {
    LEX_CSTRING *lex_str;
    char *tmp;
    if (unlikely(!(lex_str= (LEX_CSTRING *)alloc_root(mem_root,
                                                      sizeof(LEX_CSTRING) +
                                                      length+1))))
      return 0;
    tmp= (char*) (lex_str+1);
    lex_str->str= tmp;
    memcpy(tmp, str, length);
    tmp[length]= 0;
    lex_str->length= length;
    return lex_str;
  }
  LEX_CSTRING *make_clex_string(const LEX_CSTRING from) const
  {
    return make_clex_string(from.str, from.length);