How can i overcome "unsafe" error?

Question

I'm working on a project that is basically controlling a parking lot. And in some point of my code I use the function strcpy(), but I am getting an error saying that this function may be unsafe.
Here's the part of the code I'm using strcpy():

Automovel::Automovel(char * matr, Data ent, double comp) {
    //CONSTRUTOR POR ENUMERAÇAO:
    //RECEBE A MATRICULA, A DATA DE ENTRADA E O COMPRIMENTO DO CARRO
    //POSIÇAO E VALOR PAGO FICA INDEFINIDO
    matricula = new char[11];
    entry = new Data(ent);

    strcpy(matricula, matr);
    comprimento = comp;
    pos[0] = -1; pos[1] = -1;
    pago = -1;
}

I need to use the function, so, how can I solve this error?

Well, that post didn't answer how can i solve it, still using the strcpy() function — César Pereira, Jul 03 '16 at 01:37
It's not an error to use an unsafe function. I'm assuming your error is that `comprimento` was never declared. — Eli Sadoff, Jul 03 '16 at 01:38
@CésarPereira, it seems to me that you could use the safe `strncpy` instead of `strcpy`. — zneak, Jul 03 '16 at 01:38
If there is an `unsafe warning` follow [these steps](http://stackoverflow.com/questions/21873048/getting-an-error-fopen-this-function-or-variable-may-be-unsafe-when-complin). — Eli Sadoff, Jul 03 '16 at 01:39
@zneak i already tried to use strncpy() and it gives the same error — César Pereira, Jul 03 '16 at 01:40
I'm afraid you're going to need a person who can read ~~Spanish~~Portuguese then. — zneak, Jul 03 '16 at 01:41
@EliSadoff thanks, that did it. If you want post it on an answer and i will aprove you to give you reputation — César Pereira, Jul 03 '16 at 01:42
@zneak portuguese actually xD but that are all variables, so no matter the language xD — César Pereira, Jul 03 '16 at 01:42
I think this might work - Place the following right below your `#include<>` lines: `#define _CRT_SECURE_NO_WARNINGS 1` — , Jul 03 '16 at 01:48

score 1 · Answer 1 · answered Jul 03 '16 at 01:41

1

You didn't say, but I'll assume you're using Visual Studio; that's where I've encountered the error.

Either bite the bullet and use strcpy_s etc., or do this:

#pragma warning(disable : 4996)

This disables the "feature" that makes strcpy an error.

answered Jul 03 '16 at 01:41

Topological Sort

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And i should do this in every file i get the error? I have many .cpp files in my project – César Pereira Jul 03 '16 at 01:43
I would. But you can also do this through the IDE. Go to Project Properties, C/C++, Advanced, then Disable Specific Warnings. https://msdn.microsoft.com/en-us/library/jj715718.aspx – Topological Sort Jul 03 '16 at 01:47

score 0 · Accepted Answer · edited May 23 '17 at 12:19

0

Your issue is that strcpy is an 'unsafe' function so you need to disable the unsafe warning in Visual Studio so follow these steps.

edited May 23 '17 at 12:19

Community

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answered Jul 03 '16 at 01:45

Eli Sadoff

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How can i overcome "unsafe" error?

2 Answers2