Saadat mass1ve-err0r

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;

How to add a collapsible section in markdown

1. Example

Click me

Heading

Foo
Bar
- Baz

Qux

	struct ContentView: View {
	var body: some View {
	let names = [
	["appstore.app.dashed", "buildings.3d", "emoji.chicken.face"],
	["person.text.rectangle.and.nfc", "secure.element", "laugh.bubble.tapback.2.he"],
	["apple.news", "apple.podcasts.square.stack", "apple.slice"],
	]
	VStack(spacing: 20) {
	Grid(horizontalSpacing: 20, verticalSpacing: 20) {
	ForEach(names, id: \.self) { nameRow in

	.extern _objc_getClass
	.extern _sel_registerName
	.extern _MSHookMessageEx

	.section __TEXT,__text,regular,pure_instructions

	.align 16
	_init:

	stp x29, x30, [sp, #-16]!

	9254835974458887629672873635789957411886024698554157393849494864228024962939550688297074527198420261051675205999609689838587412
	7948702662533481896767559573369920938242346354580061545409242090168773727371802699309443935396635866263937828773324526334321892
	7929250312741837331511829643632683169694074912332726993582394725302853411901337696207186358524323117172520907433878952968176465
	9486937364148093931718552300016332142708943190856638524388888569011747617956915519539025796115901484762122047712200094207683584
	0703675740855407318047361595661595146837376373951978537785605481083388906490085533348547865459237835407372374738389274773789264
	3524314516560200536698529022539598732463389124803873184044464663165630452635665559603483233341839268186056673186867104904449866
	3388466377320953222057779182433549144340237502432464295061371141084500222833875925546082542869030852833895137466510262849050187
	2359980877010447170873386178573828860442255448874794721230413368694441497441338856684036949118353204002591974711928301953002372

	@commands.guild_only()
	# Command cannot be used in private messages.

	@commands.dm_only()
	# Command can only be used in private messages.

	@commands.is_owner()
	# Command can only be used by the bot owner.

	@commands.is_nsfw()

	static BOOL tweakEnBOOL;
	#define SETTINGSFILENEW "com.imokhles.Prefs"
	#define PREFERENCES_CHANGED_NOTIFICATION "com.imokhles.Prefs.preferences-changed"

	// non ARC

	static void iMoLoadPreferences() {
	CFPreferencesAppSynchronize(CFSTR(SETTINGSFILENEW));
	tweakEnBOOL = !CFPreferencesCopyAppValue(CFSTR("Enabled"), CFSTR(SETTINGSFILENEW)) ? YES : [(id)CFBridgingRelease(CFPreferencesCopyAppValue(CFSTR("Enabled"), CFSTR(SETTINGSFILENEW))) boolValue];
	}

	#import <CoreData/CoreData.h>

	@interface NSManagedObjectContext (SafeMerge)

	@end

	# Xcode 4.3.3
	Apple clang version 3.1 (tags/Apple/clang-318.0.61) (based on LLVM 3.1svn)
	Target: x86_64-apple-darwin11.4.0
	Thread model: posix

	# Xcode 4.3.2
	Apple clang version 3.1 (tags/Apple/clang-318.0.58) (based on LLVM 3.1svn)
	Target: x86_64-apple-darwin11.4.0
	Thread model: posix