Some "safe" languages like Swift and Go offer "unsafe" pointers for use with APIs written in languages like C and Objective-C. Questions using this tag should also have the relevant language tag, e.g. [swift] or [go].
Questions tagged [unsafe-pointers]
250 questions
-1
votes
2 answers
Copy slice with reflect and unsafe package
I understand that usage of unsafe package of golang is unsafe, but I'm doing it only for education purposes.
The idea is to copy a slice field of structure, copy it with reflect package and unsafe.pointer, modify and replace the original slice with…
Paul
- 6,641
- 8
- 41
- 56
-1
votes
1 answer
Hex string to UnsafePointer swift
I am looking a better way to convert a hex string to an array of UnsafePointer. here is my current code:
let pointer: UnsafePointer? = NSString(string: "d0c6a560de2e60b6ac55386defefdf93b0c907290c2ad1b4dbd3338186bfdc68").utf8String
// or
let…
Payam Khaninejad
- 7,692
- 6
- 45
- 55
-1
votes
1 answer
Create CGImage from Data multiple times results with previous image override
When generating a CGImage one can choose between an initializer using JPEG-encoded data, PNG-encoded data or just data. I'm generating an image from a Data object containing 16 bit grayscale values.
The initializer required a CGDataProvider which…
Yonatan Vainer
- 453
- 5
- 15
-1
votes
1 answer
Strange behavior of UnsafeMutablePointer
I've built a little structure which holds a pseudo-C-String UnsafeMutablePointer. Now I wanted to add a way to get the length of the String, but something behaved very strange:
struct Char {
let value: CChar
init(_ char: CChar) {
…
Josef Zoller
- 921
- 2
- 8
- 24
-1
votes
1 answer
Copy Int to UnsafeMutablePointer
I have an Int which I want to copy to a pointer of type UnsafeMutablePointer?
I tried to cast it to Data and then copy it, but the copy function param is of type UnsafeMutablePointer
This is what I've tried:
var sizePointer:…
Witterquick
- 6,048
- 3
- 26
- 50
-1
votes
1 answer
How to use UnsafePointer with Swift 3
I am trying to use the function made by Martin R as an answer to this question: Get terminal output after a command swift
However, the UnsafePointer line no longer works with Swift 3 and I'm having trouble figuring it out. How would I adapt this…
Narwhal
- 744
- 1
- 8
- 22
-1
votes
3 answers
system crash after declaring global object of the class
I am very new to c++. I am getting system crash (not compilation error) in doing following:
I am declaring global pointer of class.
BGiftConfigFile *bgiftConfig;
class BGiftConfigFile : public EftBarclaysGiftConfig { }
in this class I am reading…
coming out of void
- 1,454
- 2
- 12
- 12
-2
votes
2 answers
How to convert VB.net unsafe pointers?
How to transfer this code from C# to VB.net?
This is from C#
if (local > 0)
{ //Local patches set offsets to data located elsewhere in this section
IntPtr start = data + section->_localPatchesOffset;
LocalPatch* patch =…
John76
- 1
- 2
-2
votes
1 answer
i dont get the unsafe pointer in swift
i use an api in swift that provide me a function to send data to some destination ,the function has a parameter of type UnsafeMutablePointer < astruct >. astruct is a structure and has three variable, first one is the data , that is of type…
user8058965
- 67
- 8
-4
votes
1 answer
Is "unsafe.Pointer(&x)" unsafe to call?
I am working on a project in Go. I used "unsafe.Pointer(&x)" and while checking with some bug checker and vulnerability checker program, I am getting this warning that I should avoid using this. So I want to know is it really a vulnerability or how…
Subhash Rawat
- 451
- 6
- 13