steipete’s gists

## lldb
// iOS 11 (my iPad + iPhone)
(lldb)  po UTTypeCopyDeclaration(kUTTypePDF)
{
    UTTypeConformsTo =     (
        "public.data",
        "public.composite-\U200bcontent"
    );
    UTTypeDescription = PDF;
    UTTypeIdentifier = "com.adobe.pdf";
    UTTypeTagSpecification =     {

## PSPDFDefer.m
// Similar to defer in Swift
#define pspdf_defer_block_name_with_prefix(prefix, suffix) prefix ## suffix
#define pspdf_defer_block_name(suffix) pspdf_defer_block_name_with_prefix(pspdf_defer_, suffix)
#define pspdf_defer __strong void(^pspdf_defer_block_name(__LINE__))(void) __attribute__((cleanup(pspdf_defer_cleanup_block), unused)) = ^
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wunused-function"
static void pspdf_defer_cleanup_block(__strong void(^*block)(void)) {
    (*block)();
}
#pragma clang diagnostic pop

## SpringboardDestroyer.swift
let badwork = { (queue: DispatchQueue) in
    queue.async {
        let app = UIApplication.shared

        for index in 0..<100000 {

            let name = "Yolo \(index)"
            let identifier = app.beginBackgroundTask(withName: name, expirationHandler: {
                print("Expired")
            });

## PreviewCrash.crash
Process:               Preview [25413]
Path:                  /Applications/Preview.app/Contents/MacOS/Preview
Identifier:            com.apple.Preview
Version:               9.0 (909.18)
Build Info:            Preview-909018000000000~1
Code Type:             X86-64 (Native)
Parent Process:        ??? [1]
Responsible:           Preview [25413]
User ID:               501

## PSPDFFastEnumeration.h
//
//  PSPDFFastEnumeration.h
//  PSPDFFoundation
//
//  PSPDFKit is the leading cross-platform solution for integrating PDFs into your apps: https://pspdfkit.com.
//  Try it today using our free PDF Viewer app: https://pdfviewer.io/
//
//  This file is MIT licensed.

@protocol PSPDFFastEnumeration <NSFastEnumeration>

## PSPDFGenerics.h
//
//  PSPDFGenerics.h
//  PSPDFFoundation
//
//  PSPDFKit is the leading cross-platform solution for integrating PDFs into your apps: https://pspdfkit.com.
//  Try it today using our free PDF Viewer app: https://pdfviewer.io/
//
//  This file is MIT licensed.

/**

## PSPDF_KEYPATH.m
#define PSPDF_KEYPATH(object, property) (^{ \
    _Pragma("clang diagnostic push") \
    _Pragma("clang diagnostic ignored \"-Wunreachable-code\"") \
    _Pragma("clang diagnostic ignored \"-Wimplicit-retain-self\"") \
    return ((void)(NO && ((void)object.property, NO)), @#property); \
    _Pragma("clang diagnostic pop") \
}())

## gist:06d101d41c93763f7d5e394dea3c56fe
const NSUInteger test = 10u - 20u;
const NSInteger test2 = 10u - 20u;
const NSInteger test2_U = (NSUInteger)10 - (NSUInteger)20;
const NSUInteger test3 = 10 - 20;
const NSInteger test4 = 10 - 20;
const NSInteger test5 = 10u - 20;

64bit:
test	NSUInteger	4294967286
test2	NSInteger	4294967286

## AvailailableAnalyzers
clang --version
Apple LLVM version 9.0.0 (clang-900.0.22.8)
Target: x86_64-apple-darwin16.7.0
Thread model: posix
InstalledDir: /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin

clang -cc1 -analyzer-checker-help
OVERVIEW: Clang Static Analyzer Checkers List

USAGE: -analyzer-checker <CHECKER or PACKAGE,...>

## gist:cdb0e9d62e18ab1de058e9c97dadc3f5
Incident Identifier: 45E2C1B6-A9E4-4A66-845F-9FD0CC4093A5
CrashReporter Key:   7B7C5ED8-8653-4CE2-96EA-269439F5D927
Hardware Model:      iPad6,7
Process:         Viewer [1583]
Path:            /var/mobile/Containers/Bundle/Application/5CA518F4-8699-45FC-A706-CA4930EE3286/Viewer.app/Viewer
Identifier:      com.pspdfkit.viewer
Version:         1.5.1 (1675)
Code Type:       ARM-64
Parent Process:  ??? [1]