What will be happened if I change big_len to ->

Question

What will be happened if I change big_len to ->

UINT_MAX - 1 and little_len to UINT_MAX - 2? Still safe? Not. If you're supporting API or functionality to users, you have to give flexibility to them but not too much.

0

03.01.2021

14 ответов

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Cengizhan Pasaoglu Автор вопроса

Aakash Saini
Did you try out UINT_Max?

No need to try, you're not checking that memory boundaries in your function call, you're expecting that string and string length has to be matched.

0

03.01.2021

Cengizhan Pasaoglu Автор вопроса

Cengizhan Pasaoglu
No need to try, you're not checking that memory bo...

Also, there is no NULL checking for strings in the function. So. not safe for usage, open for overflow problems.

0

03.01.2021

Aakash Saini

Cengizhan Pasaoglu
No need to try, you're not checking that memory bo...

This my moby stack size! int main(void) { char string[1024*510] = "stack size"; } Beyond is stack overflow; program run fine!!

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03.01.2021

Aakash Saini

Cengizhan Pasaoglu
No need to try, you're not checking that memory bo...

0

03.01.2021

Aakash Saini

Cengizhan Pasaoglu
No need to try, you're not checking that memory bo...

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03.01.2021

Aakash Saini

Checkout their stack size higher than mine! I haven’t tested online! You may test.

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03.01.2021

Aakash Saini

Cengizhan Pasaoglu
Also, there is no NULL checking for strings in the...

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03.01.2021

Aakash Saini

This checks NULL beyond string! Mapping is on elements.

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03.01.2021

Daniele°

Aakash Saini

that doesn't do what you think

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03.01.2021

Daniele°

Aakash Saini

start[curr_pos] Is Better than *(start+curr_pos)

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03.01.2021

Daniele°

Aakash Saini

On the for you have buffer overflow in start[curr_pos+i]

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03.01.2021

bumbread.rs

Daniele°
start[curr_pos] Is Better than *(start+curr_pos)

it's literally the same

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03.01.2021

Daniele°

bumbread.rs
it's literally the same

Yes

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03.01.2021

Aakash Saini · Accepted Answer

Aakash Saini

Did you try out UINT_Max?

0

03.01.2021

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What will be happened if I change big_len to ->

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