mrnugget

{
  "name": "Snazzy",
  "appearance": "dark",
  "style": {
    "background.appearance": "opaque",
    "border": "#1d2433",
    "border.variant": "#1d2433",
    "border.focused": "#8695b777",
    "border.selected": "#1d2433",
    "border.transparent": "#1d2433",

mrnugget

package main

import (
        "fmt"
        "log"
        "os/exec"
        "time"
)

func main() {

mrnugget

Buy my Star Labs Starbook 14-inch

Short version: I'm selling my Star Labs Starbook. I'm just not using it enough.

Specs

• Model: Star Labs Starbook 14-inch
• OS: Ubuntu (I'll wipe and reinstall Ubuntu)
• CPU: 2.10GHz 12-core Intel i7-1260P, Turbo Boost up to 4.70GHz
• RAM: 32GB 3200MHz DDR4

mrnugget

// Compile with:
//     gcc $(pkg-config --cflags gtk4)  -o main ./main.c $(pkg-config --libs gtk4) && ./main
//
// Run with:
//     ./main
//
// Reproduce issue:
//
//     1. Click on Page 2
//     2. Select "view3" and type something.

mrnugget

import SwiftUI

struct ContentView: View {
    @EnvironmentObject private var appDelegate: AppDelegate
    
    var body: some View {
        let confirmQuitting = Binding<Bool>(get: {
            self.appDelegate.confirmQuit
        }, set: {

mrnugget

use std::{
    alloc::{self, Layout},
    mem::size_of,
};

use crate::{
    heap::{AllocError, AllocResult},
    object::ObjectHeader,
    raw::RawPtr,
};

mrnugget

[gchb]: https://gchandbook.org/
[clawing]: https://blog.mozilla.org/javascript/2013/07/18/clawing-our-way-back-to-precision/
[gsgc]: https://piumarta.com/software/gsgc/index.shtml
[migc]: https://github.com/playXE/migc
[yarpenruntime]: https://github.com/mdlugajczyk/yarpen/blob/master/runtime/yarpen_runtime.c
[bdwgc]: https://www.hboehm.info/gc/
[bdwgcslides]: https://www.hboehm.info/gc/04tutorial.pdf
[bdwdescr]: https://hboehm.info/gc/gcdescr.html
[writinginterpretersinrust]: https://rust-hosted-langs.github.io/book/introduction.html
[gcandrustpart0]: http://blog.pnkfx.org/blog/2015/10/27/gc-and-rust-part-0-how-does-gc-work/

mrnugget

Compile and run both files with (on Linux x86):

rustc --crate-type=staticlib gc_experiment4.rs && \
   gcc -O0 -g -o gc_experiment4 gc_experiment4.c -lgc_experiment4 -L. && \
  ./gc_experiment4

This will output the following:

mrnugget

UPDATE: See "Update" below

Problem

What can cause unaligned pointers to end up on my stack? Or: what, on my stack, can look like unaligned pointers?

Context is that I'm trying to write a conservative GC. I want to scan the stack for things that look like pointers (and then mark them, but I'm not at that point yet). I copied & hacked together some code from other GCs I found, which essentially does the following:

1. At program start: save the current %rbp away as the "stack bottom" (highest address)
2. When scanning stack: save now-current %rbp away as "stack top" (lowest address)

mrnugget

begin;
  -- create two tables
  drop table if exists a;
  create table a (
    id bigserial NOT NULL primary key,
    value text
  );

  drop table if exists stats;
  create table stats (