[Seqan-dev] Empty index crashes

[John Reid <j.reid@mail.cryst.bbk.ac.uk>]

Hi,

Using an empty Index crashes. Should I really have to check if there is
some text in a StringSet before building the index or is it a bug? This
code:

#include <seqan/index.h>

int main( int argc, char * argv[] ) {
    using namespace seqan;

    typedef StringSet< String< Dna5 > > string_set_t;
    typedef Index< string_set_t > index_t;

    string_set_t seqs;
    index_t index( seqs );
    Iterator<
        index_t,
        TopDown<>
    >::Type iterator( index );

    return 0;
}

gives the following for a debug build:

.... core/include/seqan/sequence/string_base.h:461 Assertion failed :
static_cast<TStringPos>(pos) < static_cast<TStringPos>(length(me)) was:
0 >= 0 (Trying to access an element behind the last one!)
Aborted (core dumped)

I'm using svn version 14052

Regards,
John.