vectorName.clear() causing problems?

[wmbuRn]

This works:

for (unsigned int i = 0; i < 30; ++i)
            {

EditBoxNames[i] = Group1->get("Ime" + tgui::to_string(i));  // call EditBox named Ime
GroupNames.push_back(EditBoxNames[i]->getText());         // Take values from
saveGroup1Names(GroupNames);    // call function to save Names to file

EditBoxLastNames[i] = Group1->get("Prezime" + tgui::to_string(i));
GroupLastNames.push_back(EditBoxLastNames[i]->getText());
saveGroup1LastNames(GroupLastNames);

EditBoxBrojTelefona[i] = Group1->get("BrojTelefona" + tgui::to_string(i));
GroupBrojTelefona.push_back(EditBoxBrojTelefona[i]->getText());
saveGroup1BrojTelefona(GroupBrojTelefona);

EditBoxDatumRodjenja[i] = Group1->get("DatumRodjenja" + tgui::to_string(i));
GroupDatumRodjenja.push_back(EditBoxDatumRodjenja[i]->getText());
saveGroup1DatumRodjenja(GroupDatumRodjenja);

TextBoxGrupaNapomene[i] = Group1Napomene->get("Group1NapomeneUcenik" + tgui::to_string(i));
GroupNapomene.push_back(TextBoxGrupaNapomene[i]->getText());
saveGroup1Napomene(GroupNapomene);

}
 

After that i called:

// here was for loop from prevoius code

// here was cout about vector size and capacity [ see picture ]
EditBoxNames.clear();
EditBoxLastNames.clear();
EditBoxBrojTelefona.clear();
EditBoxDatumRodjenja.clear();
// here was cout about new size and capacity [see picture ]

// new for loop starts here
 

So i clear those vectors to use them again in new for loop [ if needed i will post new for loop ] . And just before new for loop program crashes with core dumped. dbg says:
-------------------------------------------------------------------
nr: Adress:        Func:    File:
#0 0xb7d587b8 ??()     (/lib/i386-linux-gnu/libc.so.6:??)
#1 ??             ?? ()    (??:??)
--------------------------------------------------------------------
picture:  http://s16.postimg.org/ro920dvd1/Screenshot_from_2013_07_25_16_18_44.png .

Have i done vectorName.clear wrong? Or it is something else?

Using gcc 4.6.3
code blocks 12.11
elementary os Luna Beta 2

if need more details ask and i will post

thank you in advance
wmbuRn


EDIT: When i comment entire new for loop with /* */ program doesnt crash. And it does do whatever is suposed to do. New for loop uses same vectors just like for loop i posted

[G.]

Since you identified that something is probably wrong in your "new for loop" (obviously, the error happens after the cout after the clear) you could have at least showed us that part of code.

[wmbuRn]

This is how they are declared as global variables.

std::vector<sf::String> GroupNames;
std::vector<tgui::EditBox::Ptr> EditBoxNames;
std::vector<sf::String> GroupLastNames;
std::vector<tgui::EditBox::Ptr> EditBoxLastNames;
std::vector<sf::String> GroupBrojTelefona;
std::vector<tgui::EditBox::Ptr> EditBoxBrojTelefona;
std::vector<sf::String> GroupDatumRodjenja;
std::vector<tgui::EditBox::Ptr> EditBoxDatumRodjenja;
std::vector<sf::String> GroupNapomene;
std::vector<tgui::TextBox::Ptr> TextBoxGrupaNapomene;
 

for (unsigned int i = 0; i < 30; ++i)
            {

            EditBoxNames[i] = Group2->get("Ime" + tgui::to_string(i));
            GroupNames.push_back(EditBoxNames[i]->getText());
            saveGroup2Names(GroupNames);

            EditBoxLastNames[i] = Group2->get("Prezime" + tgui::to_string(i));
            GroupLastNames.push_back(EditBoxLastNames[i]->getText());
            saveGroup2LastNames(GroupLastNames);

            EditBoxBrojTelefona[i] = Group2->get("BrojTelefona" + tgui::to_string(i));
            GroupBrojTelefona.push_back(EditBoxBrojTelefona[i]->getText());
            saveGroup2BrojTelefona(GroupBrojTelefona);

            EditBoxDatumRodjenja[i] = Group2->get("DatumRodjenja" + tgui::to_string(i));
            GroupDatumRodjenja.push_back(EditBoxDatumRodjenja[i]->getText());
            saveGroup2DatumRodjenja(GroupDatumRodjenja);

            TextBoxGrupaNapomene[i] = Group2Napomene->get("Group2NapomeneUcenik" + tgui::to_string(i));
            GroupNapomene.push_back(TextBoxGrupaNapomene[i]->getText());
            saveGroup2Napomene(GroupNapomene);

            }

 

It is almost the same loop as before. Except this loop calls Group2 instead Group1

EDIT: Give me a second to test code again i havent erased all of the vectors.

I cleared all the vector i am using [10 of them)

EditBoxNames.clear();
            EditBoxLastNames.clear();
            EditBoxBrojTelefona.clear();
            EditBoxDatumRodjenja.clear();
            TextBoxGrupaNapomene.clear();
            GroupNames.clear();
            GroupLastNames.clear();
            GroupDatumRodjenja.clear();
            GroupBrojTelefona.clear();
            GroupNapomene.clear();
 

Same error happends

[Atani]

not having a complete example of the code or any of its dependencies makes it hard to determine the cause of the exception here...

However, something that I can suggest is verify that Group1/Group2 are not-null and that the Get method returns something not-null before you attempt to use it (one headache of using pointers everywhere)

[G.]

Obivously when you clear vectors, you can't access them with [ i] anymore.

[wmbuRn]

However, something that I can suggest is verify that Group1/Group2 are not-null and that the Get method returns something not-null before you attempt to use it (one headache of using pointers everywhere)

Group1 and Group2 works as they should.




I want to remove items that are stored in vectors after first for loop, so i can use same vectors to input new data, instead of creating new vectors.

So i should go with vectorName.erase(vectorName.begin(), vectorName.end()) ?

i did .erase on all vectors, same error

[Laurent]

After clearing the vector, it is empty. Therefore the_vector[i] accesses an invalid element. You must push_back to add elements to your cleared vector.

[wmbuRn]

OK. Thank you guys.