fay59

Here's a list of mildly interesting things about the C language that I learned mostly by consuming Clang's ASTs. Although surprises are getting sparser, I might continue to update this document over time.

There are many more mildly interesting features of C++, but the language is literally known for being weird, whereas C is usually considered smaller and simpler, so this is (almost) only about C.

1. Combined type and variable/field declaration, inside a struct scope [https://godbolt.org/g/Rh94Go]

struct foo {
   struct bar {
 int x;

mgeeky

CloseFile
CreateFile
CreateFileMapping
DeviceIoControl
FileSystemControl
FlushBuffersFile
Load Image
LockFile
NotifyChangeDirectory
Process Create

acapola

#include <stdint.h>     //for int8_t
#include <string.h>     //for memcmp
#include <wmmintrin.h>  //for intrinsics for AES-NI
//compile using gcc and following arguments: -g;-O0;-Wall;-msse2;-msse;-march=native;-maes

//internal stuff

//macros
#define DO_ENC_BLOCK(m,k) \
	do{\

Cr4sh

#include "stdafx.h"

#define DB(_val_) __asm __emit (_val_)

#define INVALID_SYSCALL (DWORD)(-1)

// code selectors
#define CS_32   0x23
#define CS_64   0x33

boxmein

// Queries the computer for the cpuid bits and tries detailing the results.
//# vcvars32 & cl __cpuid.c
// See http://msdn.microsoft.com/en-us/library/hskdteyh(v=vs.90).aspx
// Not sure what to do for Linux.

#include <stdio.h>
#include <intrin.h>

int main(int argc, char *argv[]) {