> Hi,
>
> I do this:
>
> const char *table_structure = "CREATE TABLE network (vertex_id INTEGER);";
> if (sqlite3_declare_vtab(db, table_structure) == SQLITE_OK) {
> nr = (NiuRouting*) sqlite3_malloc(sizeof (NiuRouting));
>
> if (nr == NULL) {
> //*pzErr = sqlite3_mprintf("[NiuRouting module] CREATE
> VIRTUAL: No memory \n");
> return SQLITE_NOMEM;
> }
>
> *ppVTab = (sqlite3_vtab*) nr;
> ((sqlite3_vtab*) nr)->zErrMsg = NULL;
>
> } else {
> //*pzErr = sqlite3_mprintf("[NiuRouting module] CREATE
> VIRTUAL:
> invalid SQL statement \n");
> return SQLITE_ERROR;
> }
>
> and continue.
>
> i do somethig more comment all the code inside the functions and get the
> same error. when try to load extension i just see the first debug message
> i
> can see any more i think, that the program do no enter to any method.
Just a guess:
It looks you are compiling/using c++, on Windows that wouldn't work
if the sqlite library is compiled as C (which is the usual case).
So, you might have a calling convencion issue...
Just a guess, though.
Marcus
>
> 2012/2/3 Stephan Beal <sgb...@googlemail.com>
>
>> 2012/2/3 Jorge Eliécer Osorio Caro <jorgeliecer.oso...@gmail.com>
>>
>> > Yes, that's my code:
>> >
>> > http://paste.ideaslabs.com/show/OPNHBY7xPG
>> >
>> > this the backtrace:
>> >
>> > #0 0x00000001001701d3 in initialize_niurouting ()
>> >
>>
>> Can you try the following (but i'm just guessing here);
>>
>> std::cerr << "virtual_table_name="<<virtual_table_name
>> << ", network_structure_table="
>> <<network_structure_table<< '\n';
>>
>> after those vars are initialized, and change:
>>
>> std::string table_structure(...)
>>
>> to
>> const static std::string table_structure(...)
>>
>> sqlite3_declare_vtab()[1] does not document the lifetime requirements of
>> the string passed to it, and it's "conceivable" that the lifetime of the
>> table_structure string is the problem.
>>
>> :-?
>>
>> [1] = http://www.sqlite.org/c3ref/declare_vtab.html
>>
>> --
>> ----- stephan beal
>> http://wanderinghorse.net/home/stephan/
>> http://gplus.to/sgbeal
>> _______________________________________________
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>>
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