Questions tagged [weak]
128 questions
0
votes
1 answer
When linking with --no-undefined and --as-needed, how should weak symbols be handled
When I link a shared library with --as-needed and --no-undefined, I see an error that indicates pthread_create is missing and is referenced by libstdc++_nonshared.a. If I remove --as-needed, the library links and ldd indicates that pthread.so is a…
daltairwalter
- 23
- 3
0
votes
0 answers
Code stuck at ".thumb_func .weak HardFault_HandlerHardFault_Handler" on NRF52840 using PCA10056
I'm working on a project using an NRF52840 microcontroller and the PCA10056 development board. When I debug my code, it gets stuck at the following line:
.thumb_func
.weak HardFault_Handler
HardFault_Handler:
b
when i build the project i get no eror
0
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0 answers
using ELF weak symbols to enable a feature if two other features need it
I'm developing a static library (*.a file) with GCC and an ELF target.
I need the following (AND12 setup):
the data part must be linked into the executable iff both features feature1 and feature2 are linked in (because they are used)
feature3…
pts
- 80,836
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why no error message when alias function with different prototype?
test.c
void __f () { /* Do something. */; }
int f (int) __attribute__ ((weak, alias ("__f")));
test.h
void f ();
main.c
//call f
f();
the __f() and alias f() has different prototype.
use build tools gcc-arm-none-eabi-4_9, no error or warning…
yyd
- 33
- 5
0
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0 answers
How to retain lazy instance in cross ref objects
Given two classes which reference each other and one of the refs is weak, how do I retain it when initialising locally? This is the structure of the code:
class Generator {
weak var machine: Machine!
public init(for machine: Machine) {
…
NikoDiYana
- 31
- 9
0
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0 answers
How to set GUI options for three.js globe texture? Weakmap error
I've added gui options for my globe to change textures but I get the error "TypeError: Attempted to set a non-object key in a WeakMap" I think the error is related to the textures I'm using. what can I do to fix the gui error?
here is my code:
…
shange
- 77
- 7
0
votes
1 answer
In Javascript, is there a way to make strict comparison "greater than" or "smaller than" operations?
Is there a way in Javascript to make strict comparison operations other than the one allowed with '===', i.e., a strict '<', '>', '<=' and '>='?
The code below using '<' performs a weak operation between a string and an integer. I would like to know…
Alejandro
- 37
- 9
0
votes
1 answer
Can I use RunLoop for realtime object observing in Swift?
I have a Process object (is kind of Model). Inside a process, I have an array of tuples
var listeners: [(WeakContainer, (S) -> ())]
WeakContainer handles a weak ref inside. I need to remove an element from the listeners array when…
Ihor M.
- 184
- 10
0
votes
1 answer
assembly weak symbol not working as (I) expected
I am cross compiling with riscv-corev32-elf-gcc.
In a first file 'generic.S'
I have the following code:
.section .text.handlers
.weak u_sw_irq_handler
.weak __no_irq_handler
.section .vectors, "ax"
vector_table:
jal x0, u_sw_irq_handler
…
Guillaume D
- 2,202
- 2
- 10
- 37
0
votes
1 answer
Java WeakReference is still holding valid reference when referent is no longer valid
I'm confused with this program:
class Point {
private final int x;
private final int y;
}
public class App
{
WeakReference newPoint() {
Point referent = new Point();
return new WeakReference(referent); //…
Troskyvs
- 7,537
- 7
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- 115
0
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0 answers
swift how to store a weak reference to a class & protocol in a generic
I have a bunch of classes derived from UIView derivatives. Those clases also conform to protocol commonFunctions. I store them for further use in a dictionary, like this:
var elementsStore:[String:UIView & commonFunctions]
and protocol…
Alfredo Meraz
- 139
- 1
- 7
0
votes
1 answer
Use [weak self] in the nested block in swift
I'm working on calling an animation in Swift and I'm a bit confused with using [weak self] in the nested block. I saw some other posts related to this question, but it confused me because some say they need the weak self, and some don't.
My…
Yuuu
- 715
- 1
- 9
- 32
0
votes
2 answers
Android app with weak reference and singleton
I'm in the process of completely redesigning my Android app. Before, EVERYTHING was in the same class.
So I tried to redraw everything so that the code is clearer apart Admob than the doc advice to put in the Main thread, I separate the…
0
votes
1 answer
How to force user implement __weak functions
I'm writing a library and have some __weak functions which need to be overwritten by the programmers. I want to make sure they do so, so I did this:
__weak void checkButtons(){
#warning "Implement this"
}
And put the prototype in the…
Mohammad Kholghi
- 533
- 2
- 7
- 21
0
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0 answers
Weak Encryption: Inadequate RSA Padding
The security check tool Fortify has detected vulnerability on the lines
RSAPKCS1SignatureDeformatter deformatter = new RSAPKCS1SignatureDeformatter(key);
deformatter.SetHashAlgorithm("SHA256");
The CreateDeformatter() method performs public key RSA…
dilla
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