Re: [Boost-bugs] [ boost-Support Requests-1707948 ] Assertion failed in token_iterator.hpp

SourceForge.net wrote:

Using BOOST.1.33.1 with Borland C++.
I've suddenly got a Message Box saying:
Assertion failed:  valid_, file ...boost/token_iterator.hpp, line 52

Line 52 in token_iterator.hpp is:  assert(valid_);  in void increment(){}.

Could anybody give me a clue as to what might be going on and why it has suddenly started happening, please?

Probably, you're trying to increment an iterator pointing to end() . Even if you check (pos != end) and everithing seems ok, it may be caused by passing a string like "###/#_#" to tokenizer<>. This produces no tokens, that's why your tokenizer.begin() == tokenizer.end(). If you want to tokenize such string and get <###> and <#_#> tokens, try following:

string s("###/#_#");
char_separator<char> sep("/");
tokenizer< char_separator<char> > tok(s, sep);