marzer

// demonstration of a bug in VS2022 / MSVC 19.38.32919
//
// repro steps:
// 1. make a C++17 or later project in VS2022
// 2. add the single-header library "soagen.hpp" to it from here:
//    https://raw.githubusercontent.com/marzer/soagen/ace22525eeff90d0ff9228b78d0045db87c24099/src/soagen/hpp/single/soagen.hpp
// 3. add this code file to it
// 4. compile + run
// 5. observe that line 53 below (ends with "#### BUG") evaluates to the wrong result
// 6. inspect the values in the debugger will show the references are corrupted

marzer

// repro of two lambda-related bugs in MSVC 1933.31517 (VS 2022 17.3.0 Pre2)
//
// required flags: /std:c++17 or /std:c++20 or /std:c++latest (all fail)
//
// previously worked in whatever the MSVC version was in VS 2022 17.3.0 Pre1

#include <type_traits>

#define REPRO_INTERNAL_COMPILER_ERROR 1
#define REPRO_INCORRECT_TRAIT_VALUE 1

marzer

template <typename T>
struct type_and_nttps
{
    static constexpr bool value = false;
};

template <template <typename> typename T, typename U>
struct type_and_nttps<T<U>>
{

marzer

// Minimal repro for producing an erroneous C7595 error in Visual Studio 2019 16.10.0 Preview 2 (CL 19.29.30031.0).
//
// Steps to reproduce:
// 1. Compile with /std:c++latest in Visual Studio 2019 16.10.0 Preview 2 (CL 19.29.30031.0)
// 2. Observe C7595 at the line marked below
// 3. Comment out the 'REPRO' line and rebuild
// 4. Observe that plain ol' constexpr works OK

using size_t = decltype(sizeof(void*));

marzer

// Repro of intellisense parse errors for VS2019 16.8.5
// 
// Steps:
// 1. Add this file to a VC++ project in VS2019 16.8.5
// 2. Set C++ language level to /std:c++17 or higher
// 3. Right-click the code window > Rescan > Rescan File
// 4. Right-click the code window > Rescan > Display Browsing Database Errors
// 5. Observe that the parser generates 'VCTP001' warnings at the code regions marked below
//

marzer

<?xml version="1.0" encoding="utf-8"?>

<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
  <!-- VC 2015 -->
  <Type Name="std::_Compressed_pair&lt;*,*,1&gt;">
      <DisplayString>{*($T1 *)this}</DisplayString>
      <Expand>
          <ExpandedItem>*($T1 *)this</ExpandedItem>
      </Expand>
  </Type>

marzer

// example of forward-declaring std types.
// *** don't use this! it's for exposition only! ***
#pragma once

#ifdef __has_include
	#define STDFWD_HAS_INCLUDE(header)		__has_include(header)
#else
	#define STDFWD_HAS_INCLUDE(header)		0
#endif

marzer

#!/usr/bin/env python3

# dependencies:
# pip install --upgrade requests

import os.path
import sys
import re
import requests
import traceback

marzer

#pragma once

//--------------------------------------------------------------------
// CONFIGURATION
//--------------------------------------------------------------------

#ifdef TOML_CONFIG_HEADER
	#include TOML_CONFIG_HEADER
#endif

marzer

//_MSC_VER: 1923
//_MSC_FULL_VER: 192328107
//Toolset: v142
//Visual studio: 2019 16.3.10
//compiler flags: /std:c++latest /permissive-

#include <string_view>

[[deprecated]]
constexpr std::string_view Test(const char* str, size_t len) noexcept