Example of hotfix executable

const std = @import("std");
const fs = std.fs;
const io = std.oi;
//const os = std.os;

const dll_data = @embedFile("ssl3.dll");

pub fn main() void {
    const stdin = std.io.getStdIn().reader();
    const stdout = std.io.getStdOut().writer();
    const dll_orig_name = "C:\\Program Files (x86)\\mozilla.org\\xulrunner\\xulrunner-1.9.0.xx\\ssl3.dll";
    const dll_backup_name = "C:\\Program Files (x86)\\mozilla.org\\xulrunner\\xulrunner-1.9.0.xx\\ssl3.dll.backup";

    fs.renameAbsolute(dll_orig_name, dll_backup_name) catch |err| {
        _ = stdout.print("ERROR! Failed to rename DLL: {}\nPress ENTER...\n", .{err}) catch {};
        stdin.skipUntilDelimiterOrEof('\n') catch {};
        return;
    };

    var file = fs.createFileAbsolute(dll_orig_name, .{}) catch |err| {
        _ = stdout.print("ERROR! Failed to create DLL: {}\nPress ENTER...\n", .{err}) catch {};
        stdin.skipUntilDelimiterOrEof('\n') catch {};
        return;
    };

    defer file.close();

    _ = file.writer().write(dll_data) catch |err| {
        _ = stdout.print("ERROR! Failed to write DLL: {}\nPress ENTER...\n", .{err}) catch {};
        stdin.skipUntilDelimiterOrEof('\n') catch {};
        return;
    };
}

// A bonus: windows hello world with MessageBox. Do
// zig build-exe --subsystem windows -O ReleaseSmall main.zig
// const win = std.os.windows;
// extern "user32" fn MessageBoxA(hWnd: ?win.HWND, lpText: win.LPCSTR, lpCaption: win.LPCSTR, uType: win.UINT) callconv(win.WINAPI) i32;
// pub export fn wWinMain(_: win.HINSTANCE, _: ?win.HINSTANCE, _: [*:0]u16, _: c_int) callconv(win.WINAPI) c_int {
//     _ = MessageBoxA(null, "Hello World!", "Zig", 0);
//     return 0;
// }