I'm trying to make an analogue of sscanf with a specifier %p. I use this: int res = ahex2num(buf); *va_arg(ap, void **) = (void *) res; It works correctly, i a
parent: volatile int signalval = 0; void signal_handle_c(int sig_num) { printf("child SIGUSR1 ok\n"); signalval = 1; }; int main(int argc,char**argv){
Recently I have migrated my app from OpenSSL 1.0 to OpenSSL 3.0. And now my connection is not working anymore. The methods which perform private encryption and
Does anybody have a simple example on how to call a C function from Java 17 that includes creating a C library and how to setup a MethodHandle? The JEP descript
While testing things around Compiler Explorer, I tried out the following overflow-free function for calculating the average of 2 unsigned 32-bit integers: uint3
Does the c standard provide a thread safe random number generator where instead of using a global state the generator uses and modifies the provided state buffe
#include <stdio.h> void hello() { printf("hello world\n"); } int main() { void *(*gibberish)() = (void *(*)())hello; (*gibberish)(); voi
So I've been practicing to write simple subroutines in FASMW using the CDECL and STDCALL calling conventions and it got me wondering about what the printf funct
Hi I have the following struct typedef struct mystruct_s { int* array; } mystruct; and I want to create a function that initializes it. I have two ways of
I am having difficulty comparing a string passed from usermode type LPWSTR to a LDR table entry type UNICODE_STRING Kernel C: struct { int pid; int user
According to C99 Standard: The order of evaluation of the function designator, the actual arguments, and subexpressions within the actual arguments is unspe
I'm experimenting with generic-like code and I have a function like this (a lot of not relevant code removed): typedef uint8_t (*struct_converter_t)(void *, cha
I'm quite new to font rendering and I'm trying to generate signed distance field with freetype so that it can be used in fragment shader in OpenGL. Here is the
I'm experimenting with generic-like code and I have a function like this (a lot of not relevant code removed): typedef uint8_t (*struct_converter_t)(void *, cha
I'm quite new to font rendering and I'm trying to generate signed distance field with freetype so that it can be used in fragment shader in OpenGL. Here is the
I am trying to compile nginx on Ubuntu machine with GCC. My Glibc version is 2.31. m@feynman:~/Junk/nginx-1.9.9 $ /lib/x86_64-linux-gnu/libc.so.6 --version GNU
I am using a software, which modifies some bytes in an executable. I don't know what it does exactly, but I use it for license protection of the already built b
I know the variables in function are using stack space. When function exit, the space are freed. That's why we should declare the pointer variable as static in
So im learning about pointers and dynamic memory and how am experimenting with fgets. So i want to take in a string input into a pointer using fgets, but i want
So I am trying to do a program where it shows a menu and asks what will the user do. I am stuck in where I cant get the return value in case 1 and use it in cas