strncpy Questions
4
Solved
I'm unpacking several structs that contain 's' type fields from C. The fields contain zero-padded UTF-8 strings handled by strncpy in the C code (note this function's vestigial behaviour). If I dec...
11
Solved
Edit: I've added the source for the example.
I came across this example:
char source[MAX] = "123456789";
char source1[MAX] = "123456789";
char destination[MAX] = "abcdefg";
char destination1[MAX]...
Pga asked 11/8, 2009 at 5:17
6
How can I access s[7] in s?
I didn't observe any difference between strncpy and memcpy. If I want to print the output s, along with s[7] (like qwertyA), what are the changes I have to made in the f...
8
I understand that strlcpy and strlcat were designed as secure replacements for strncpy and strncat. However, some people are still of the opinion that they are insecure, and simply cause a differen...
7
Solved
I am using the code below
char call[64] = {'\0'} /* clean buffer */
strncpy(call, info.called, sizeof(call));
I always use the sizeof for the destination for protecting a overflow, incase source...
4
Solved
I can see many sprintf's used in my applications for copying a string.
I have a character array:
char myarray[10];
const char *str = "mystring";
Now if I want want to copy the string str into m...
5
Solved
how would you get the last word of a string, starting from the '\0' newline character to the rightmost space? For example, I could have something like this where str could be assigned a string:
ch...
3
Solved
I know strncpy is a safer version of strcpy as said here.
However, when I want to copy from src to dst and dst is not a clean buffer, I get unwanted results, which can be avoided by strcpy:
char ...
5
I am looking to find out why strncpy is considered insecure. Does anybody have any sort of documentation on this or examples of an exploit using it?
6
Solved
The function strncpy() doesn't always null terminate so I want to know what is the best alternative that always null terminates?
I want a function that if:
strlen(src) >= n /*n is the number of...
6
Solved
what should I use when I want to copy src_str to dst_arr and why?
char dst_arr[10];
char *src_str = "hello";
PS: my head is spinning faster than the disk of my computer after reading a lot of t...
6
Solved
At the following regarding strncpy: http://www.cplusplus.com/reference/clibrary/cstring/strncpy/, it mentions the following:
No null-character is implicitly appended to the end of destination, s...
7
Solved
Is there an exact equivalent to strncpy in the C++ Standard Library? I mean a function, that copies a string from one buffer to another until it hits the terminating 0? For instance when I have to ...
6
Solved
I'm wondering if there's a cleaner and more efficient way of doing the following strncpy considering a max amount of chars. I feel like am overdoing it.
int main(void)
{
char *string = "hello wo...
5
Solved
I have the following sample code that mimics the code in the application.
#include <iostream>
#include <string.h>
#include <cstring>
#include <atlstr.h>
using namespace std...
6
Solved
I find it hard to believe I'm the first person to run into this problem but searched for quite some time and didn't find a solution to this.
I'd like to use strncpy but have it be UTF8 aware so it ...
3
Solved
What is the significant difference between memcpy() and strncpy()? I ask this because we can easily alter strncpy() to copy any type of data we want, not just characters, simply by casting the firs...
4
Solved
I am just messing around with strncpy.
My program looks like this
typedef struct
{
char from_str[10];
}test;
main ()
{
test s1;
memset(&s1,0,sizeof(test));
char src[10]="himansh";
cha...
Broadbrim asked 28/12, 2012 at 6:12
4
Solved
I am trying to use strncpy to only copy part of a string to another string in C.
Such as:
c[] = "How the heck do I do this";
Then copy "do this" to the other string, such that:
d[] = "do this...
3
Solved
I have been chasing this bug around, and I just don't get it. Have I forgotten some basic C or something?
==28357== Conditional jump or move depends on uninitialised value(s)
==28357== at 0x4C261E...
11
Solved
strncpy() supposedly protects from buffer overflows. But if it prevents an overflow without null terminating, in all likelihood a subsequent string operation is going to overflow. So to protect aga...
1
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