BSON on arm cpu

[Claudio Bisegni]

Hi,

i have compiled succesfully bson cpp on arm but i have problem when i ho to read string key. I receive the error:

terminate called after throwing an instance of 'bson::assertion'

  what():  BsonAssertion id: 13111 field not found, expected type 2

Aborted

the other type seem to work. Any ints about that? where i can search to try to resolve the issue?

thank sin advanced

[Dwight Merriman]

big or little endian

?

[Claudio Bisegni]

I use the ts-7800 sbc it's an armel so little-endian with eabi gcc.

Saluti

     Claudio

[Dwight Merriman]

see bsontypes.h - type 2 is string

so you are probably tring to pull a string from a bosnelement

yet it isn't a string

you could do something like

  cout << myelement.type();

to see what it is.

[Bisegni Claudio]

hi,

i have tested and it return:  type 0 so, somenthing goes wrong on insert of the string

[Dwight Merriman]

that means there is no such element

test the following code with your compilation let me know if it works:

{

 BSONObjBuilder b;

 b.append("x","y");

 cout << b.obj()["x"].String();

[Bisegni Claudio]

hi,
i have tryed and i receive the same error:

terminate called after throwing an instance of 'bson::assertion'
what(): BsonAssertion id: 13111 field not found, expected type 2

0Aborted

where i can put some output debug string to debug this issue on arm?

thank sin advance

[Dwight Merriman]

cout << b.obj().toString() << endl;

post that here?

[Claudio Bisegni]

hi,
here is the output:
0assertion failure in bson library: 10330 Element extends past end of object

terminate called after throwing an instance of 'bson::assertion'

what(): BsonAssertion id: 10330 Element extends past end of object
Aborted

for the main.cpp
int main (int argc, char* argv[] )
{
bson::BSONObjBuilder b;

b.append("x","y");

std::cout << b.obj().toString() << std::endl;
return 0;
}

thanks in advanced

[Dwight Merriman]

i'm out of ideas without digging in and debugging fully

sorry

run in debugger?

dump the byte output and see if it matches what non-arm generates?

[Claudio Bisegni]

Hi,

with a my coworker, we had debugged the bson source code on our arm board. The problem is the gcc and byte write alignment. But i have no idea how resolve it.

The problem appear on:

 void appendNum(int j) {

int* tmpPtr = (int*)grow(sizeof(int));

             *tmpPtr = j;

        }

if the tmpPtr point to a location inside the boundary of a word(4 byte), the write begin always ah the first byte of the involved word.

Someone have some hint to correct this?

thanks in advanced.

Il giorno martedì 24 aprile 2012 19:44:57 UTC+2, Dwight Merriman ha scritto:

i'm out of ideas without digging in and debugging fully

sorry

run in debugger?

dump the byte output and see if it matches what non-arm generates?

hi,

here is the output:
0assertion failure in bson library: 10330 Element extends past end of object

terminate called after throwing an instance of 'bson::assertion'

 what():  BsonAssertion id: 10330 Element extends past end of object
Aborted

for the main.cpp
int main (int argc, char* argv[] )
{
 bson::BSONObjBuilder b;

 b.append("x","y");

 std::cout << b.obj().toString() << std::endl;
return 0;
}


thanks in advanced

On 24/apr/2012, at 18:54, Dwight Merriman wrote:

> cout << b.obj().toString() << endl;
>
> post that here?
>