pervognsen

I was told by @mmozeiko that Address Sanitizer (ASAN) works on Windows now. I'd tried it a few years ago with no luck, so this was exciting news to hear.

It was a pretty smooth experience, but with a few gotchas I wanted to document.

First, download and run the LLVM installer for Windows: https://llvm.org/builds/

Then download and install the VS extension if you're a Visual Studio 2017 user like I am.

It's now very easy to use Clang to build your existing MSVC projects since there's a cl compatible frontend:

mlabbe

/* clang-format off */
/* ftg_core.h - v0.6  - Frogtoss Toolbox.  Public domain-like license below.

   ftg libraries are copyright (C) 2015-2021 Frogtoss Games, Inc.
   http://github.com/mlabbe/ftg_toolbox
   
   ftg header files are single file header files intended to be useful
   in C/C++.  ftg_core contains generally useful functions
   
   Special thanks to STB for the inspiration.

pervognsen

// assume sequential consistency.

// this technique prevents frequent synchronization (cache line thrashing) of the read/write positions
// in the case where the ring buffer is running neither too close to full or too close to empty. it
// relies on the fact that an out of date notion of the read/write positions are conservative approximations.

// globals in shared memory. assume in different cache lines to prevent false sharing.
int read_pos, write_pos;

// reader

mlabbe

// usage: FTG_STATIC_ASSERT(1==0)
// error message contains "assertion_at_line_xxx"
//
// usage: FTG_STATIC_ASSERT_MSG(1==0, one_is_not_zero)
// error message contains: "one_is_not_zero"
//
// tested on GCC, Clang, MSVC 98 and MSVC 2015
//

tomnomnom

package main

import (
  "log"
  "fmt"
  "encoding/json"
)

func main() {
  b := []byte(`{"name": "tom", "favNum": 6, "interests": ["knives", "computers"], "usernames": {"github": "TomNomNom", "twitter": "@TomNomNom"}}`)