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       1                 :            : // Copyright (C) 2009  Internet Systems Consortium, Inc. ("ISC")
       2                 :            : //
       3                 :            : // Permission to use, copy, modify, and/or distribute this software for any
       4                 :            : // purpose with or without fee is hereby granted, provided that the above
       5                 :            : // copyright notice and this permission notice appear in all copies.
       6                 :            : //
       7                 :            : // THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
       8                 :            : // REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
       9                 :            : // AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
      10                 :            : // INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
      11                 :            : // LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
      12                 :            : // OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
      13                 :            : // PERFORMANCE OF THIS SOFTWARE.
      14                 :            : 
      15                 :            : #include <string>
      16                 :            : 
      17                 :            : #include <exceptions/exceptions.h>
      18                 :            : 
      19                 :            : using isc::Exception;
      20                 :            : 
      21                 :            : namespace isc {
      22                 :            : 
      23                 :            : const char*
      24                 :        499 : Exception::what() const throw() {
      25                 :        499 :     const char* whatstr = "isc::Exception";
      26                 :            : 
      27                 :            :     // XXX: even though it's very unlikely that c_str() throws an exception,
      28                 :            :     // it's still not 100% guaranteed.  To meet the exception specification
      29                 :            :     // of this function, we catch any unexpected exception and fall back to
      30                 :            :     // the pre-defined constant.
      31                 :            :     try {
      32                 :        998 :         whatstr = what_.c_str();
      33                 :            :     } catch (...) {
      34                 :            :         // no exception handling is necessary.  just have to catch exceptions.
      35                 :            :     }
      36                 :            : 
      37                 :        499 :     return (whatstr);
      38                 :            : }
      39                 :            : 
      40                 :            : }