Call to consteval function "std::source_location::current()" did not produce a valid constant expression

Bug type: Language Service

Describe the bug

• OS and Version: Windows 10
• VS Code Version: 1.65.0
• C/C++ Extension Version: v1.9.2 Pre-Release
• Compiler: MinGW-w64 x64 from MSYS2
• Other extensions you installed (and if the issue persists after disabling them): CMakeTools
• A clear and concise description of what the bug is, including information about the workspace (i.e. is the workspace a single project or multiple projects, size of the project, etc).

Small CMake project with C++20.

When using std::source_location::current() as a default parameter, IntelliSense throws this warning:
call to consteval function "std::source_location::current" did not produce a valid constant expression

However, the code compiles without errors and follows the examples from https://en.cppreference.com/w/cpp/utility/source_location

Steps to reproduce

1. Install and activate C/C++ Extension Pack
2. Create a .cpp file containing a sample program using std::source_location::current()
3. If IntelliSense for C++ is set up, you should see the error message shown in the screenshot.

Expected behavior
IntelliSese should not throw an error, as this is valid C++ code: https://en.cppreference.com/w/cpp/utility/source_location

Code sample and logs

• Code sample

// Reproduce std::source_location::current IntelliSense Bug

#include <iostream>
#include <source_location>

void reproduce(const std::source_location t_loc = std::source_location::current()) {
    std::cout << t_loc.file_name() << std::endl;
}

int main() {
    reproduce();
    return 0;
}

• Configurations in c_cpp_properties.json
  Didn't find c_cpp_properties.json. Everything stored in settings.json, I guess.

• Logs from running C/C++: Log Diagnostics from the VS Code command palette
  -------- Diagnostics - 7.3.2022, 11:28:13
  Version: 1.9.2
  Current Configuration:
  {
  "name": "Win32",
  "includePath": [
  "${workspaceFolder}/"
  ],
  "defines": [
  "_DEBUG",
  "UNICODE",
  "_UNICODE"
  ],
  "windowsSdkVersion": "10.0.19041.0",
  "compilerPath": "C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/MSVC/14.28.29910/bin/Hostx64/x64/cl.exe",
  "intelliSenseMode": "windows-msvc-x64",
  "compilerArgs": [],
  "cStandard": "c17",
  "cppStandard": "c++20",
  "intelliSenseModeIsExplicit": false,
  "cStandardIsExplicit": true,
  "cppStandardIsExplicit": true,
  "mergeConfigurations": false,
  "compilerPathIsExplicit": false,
  "configurationProvider": "ms-vscode.cmake-tools",
  "browse": {
  "path": [
  "${workspaceFolder}/"
  ],
  "limitSymbolsToIncludedHeaders": true
  }
  }
  Custom browse configuration:
  {
  "browsePath": [
  "d:/entwicklung/working/molog/build/test/cmakefiles",
  "d:/entwicklung/working/molog/src/"./"",
  "d:/entwicklung/working/molog/src",
  "d:/entwicklung/working/molog/src/molog",
  "d:/entwicklung/working/molog/sample"
  ],
  "standard": "gnu++20",
  "compilerPath": "d:/programme/msys2/mingw64/bin/g++.exe",
  "compilerArgs": [
  "-Wall",
  "-Wextra",
  "-g",
  "-DDebug",
  "-std=gnu++20"
  ]
  }
  Custom configurations:
  [ D:\Entwicklung\working\molog\sample\temp.cpp ]
  {
  "defines": [
  "Debug"
  ],
  "standard": "gnu++20",
  "includePath": [
  "d:/entwicklung/working/molog/src"
  ],
  "compilerPath": "d:/programme/msys2/mingw64/bin/g++.exe",
  "compilerArgs": [
  "-Wall",
  "-Wextra",
  "-g",
  "-DDebug",
  "-std=gnu++20"
  ]
  }
  Translation Unit Mappings:
  [ D:\Entwicklung\working\molog\sample\temp.cpp ]:
  D:\Entwicklung\working\molog\sample\temp.cpp
  Translation Unit Configurations:
  [ D:\Entwicklung\working\molog\sample\temp.cpp ]:
  Process ID: 2040
  Memory Usage: 74 MB
  Compiler Path: d:/programme/msys2/mingw64/bin/g++.exe
  Includes:
  D:\ENTWICKLUNG\WORKING\MOLOG\SRC
  D:\PROGRAMME\MSYS2\MINGW64\INCLUDE\C++\11.2.0
  D:\PROGRAMME\MSYS2\MINGW64\INCLUDE\C++\11.2.0\X86_64-W64-MINGW32
  D:\PROGRAMME\MSYS2\MINGW64\INCLUDE\C++\11.2.0\BACKWARD
  D:\PROGRAMME\MSYS2\MINGW64\LIB\GCC\X86_64-W64-MINGW32\11.2.0\INCLUDE
  D:\PROGRAMME\MSYS2\MINGW64\INCLUDE
  D:\PROGRAMME\MSYS2\MINGW64\LIB\GCC\X86_64-W64-MINGW32\11.2.0\INCLUDE-FIXED
  D:\PROGRAMME\MSYS2\MINGW64\X86_64-W64-MINGW32\INCLUDE
  Defines:
  Debug
  Debug
  Standard Version: c++20
  IntelliSense Mode: windows-gcc-x64
  Other Flags:
  --g++
  --gnu_version=110200
  Total Memory Usage: 74 MB

------- Workspace parsing diagnostics -------
Number of files discovered (not excluded): 5809

• Logs from the language server logging

loggingLevel: Information
Code browsing service initialized
Folder: C:/PROGRAM FILES (X86)/MICROSOFT VISUAL STUDIO/2019/COMMUNITY/VC/TOOLS/MSVC/14.28.29910/ATLMFC/INCLUDE/* will be indexed
Folder: C:/PROGRAM FILES (X86)/MICROSOFT VISUAL STUDIO/2019/COMMUNITY/VC/TOOLS/MSVC/14.28.29910/INCLUDE/* will be indexed
Folder: C:/PROGRAM FILES (X86)/WINDOWS KITS/10/INCLUDE/10.0.19041.0/CPPWINRT/ will be indexed
Folder: C:/PROGRAM FILES (X86)/WINDOWS KITS/10/INCLUDE/10.0.19041.0/SHARED/ will be indexed
Folder: C:/PROGRAM FILES (X86)/WINDOWS KITS/10/INCLUDE/10.0.19041.0/UCRT/ will be indexed
Folder: C:/PROGRAM FILES (X86)/WINDOWS KITS/10/INCLUDE/10.0.19041.0/UM/ will be indexed
Folder: C:/PROGRAM FILES (X86)/WINDOWS KITS/10/INCLUDE/10.0.19041.0/WINRT/ will be indexed
Folder: D:/ENTWICKLUNG/WORKING/MOLOG/ will be indexed
Discovering files...
Querying compiler for default C++ language standard using command line: "d:/programme/msys2/mingw64/bin/g++.exe" -x c++ -E -dM nul
Processing folder (non-recursive): C:/PROGRAM FILES (X86)/MICROSOFT VISUAL STUDIO/2019/COMMUNITY/VC/TOOLS/MSVC/14.28.29910/ATLMFC/INCLUDE
Processing folder (non-recursive): C:/PROGRAM FILES (X86)/MICROSOFT VISUAL STUDIO/2019/COMMUNITY/VC/TOOLS/MSVC/14.28.29910/INCLUDE
Processing folder (recursive): C:/PROGRAM FILES (X86)/WINDOWS KITS/10/INCLUDE/10.0.19041.0/CPPWINRT/
Processing folder (recursive): C:/PROGRAM FILES (X86)/WINDOWS KITS/10/INCLUDE/10.0.19041.0/SHARED/
Processing folder (recursive): C:/PROGRAM FILES (X86)/WINDOWS KITS/10/INCLUDE/10.0.19041.0/UCRT/
Processing folder (recursive): C:/PROGRAM FILES (X86)/WINDOWS KITS/10/INCLUDE/10.0.19041.0/UM/
Detected language standard version: gnu++17
Querying compiler for default C language standard using command line: "d:/programme/msys2/mingw64/bin/g++.exe" -x c -E -dM nul
Processing folder (recursive): C:/PROGRAM FILES (X86)/WINDOWS KITS/10/INCLUDE/10.0.19041.0/WINRT/
Detected language standard version: gnu17
Querying compiler's default target using command line: "d:/programme/msys2/mingw64/bin/g++.exe" -dumpmachine
Processing folder (recursive): D:/ENTWICKLUNG/WORKING/MOLOG/
Discovering files: 4954 file(s) processed
Compiler returned default target value: x86_64-w64-mingw32

Custom configuration provider 'CMake Tools' registered
Unable to retrieve file system information for d:/entwicklung/working/molog/src/"./". error = -1
Folder: D:/PROGRAMME/MSYS2/MINGW64/LIB/GCC/X86_64-W64-MINGW32/11.2.0/INCLUDE/ will be indexed
Folder: D:/PROGRAMME/MSYS2/MINGW64/INCLUDE/ will be indexed
Folder: D:/PROGRAMME/MSYS2/MINGW64/LIB/GCC/X86_64-W64-MINGW32/11.2.0/INCLUDE-FIXED/ will be indexed
Folder: D:/PROGRAMME/MSYS2/MINGW64/X86_64-W64-MINGW32/INCLUDE/ will be indexed
Folder: D:/ENTWICKLUNG/WORKING/MOLOG/BUILD/TEST/CMAKEFILES/ will be indexed
Folder: D:/ENTWICKLUNG/WORKING/MOLOG/SRC/ will be indexed
Folder: D:/ENTWICKLUNG/WORKING/MOLOG/SAMPLE/ will be indexed
0 file(s) removed from database
IntelliSense Engine = Default.
Enhanced Colorization is enabled.
Error squiggles are enabled if all header dependencies are resolved.
Autocomplete is enabled.
Done discovering files.
Discovering files...
IntelliSense Engine = Default.
Enhanced Colorization is enabled.
Error squiggles are enabled if all header dependencies are resolved.
Autocomplete is enabled.
IntelliSense Engine = Default.
Enhanced Colorization is enabled.
Error squiggles are enabled if all header dependencies are resolved.
Autocomplete is enabled.
Processing folder (recursive): D:/PROGRAMME/MSYS2/MINGW64/LIB/GCC/X86_64-W64-MINGW32/11.2.0/INCLUDE/
Processing folder (recursive): D:/PROGRAMME/MSYS2/MINGW64/INCLUDE/
Processing folder (recursive): D:/PROGRAMME/MSYS2/MINGW64/LIB/GCC/X86_64-W64-MINGW32/11.2.0/INCLUDE-FIXED/
Processing folder (recursive): D:/PROGRAMME/MSYS2/MINGW64/X86_64-W64-MINGW32/INCLUDE/
Processing folder (recursive): D:/ENTWICKLUNG/WORKING/MOLOG/BUILD/TEST/CMAKEFILES/
Processing folder (recursive): D:/ENTWICKLUNG/WORKING/MOLOG/SRC/
Processing folder (recursive): D:/ENTWICKLUNG/WORKING/MOLOG/SAMPLE/
Discovering files: 5809 file(s) processed
4945 file(s) removed from database
Done discovering files.
Populating include completion cache.
Parsing remaining files...
Parsing: 0 files(s) processed
Done parsing remaining files.
Checking for syntax errors: D:\Entwicklung\working\molog\src\molog\Logger.hpp
Shutting down IntelliSense server: D:\Entwicklung\working\molog\sample\temp.cpp
Checking for syntax errors: D:\Entwicklung\working\molog\src\molog\Logger.hpp
Shutting down IntelliSense server: D:\Entwicklung\working\molog\sample\temp.cpp
Shutting down IntelliSense server: D:\Entwicklung\working\molog\sample\temp.cpp
Checking for syntax errors: D:\Entwicklung\working\molog\src\molog\Logger.hpp
Shutting down IntelliSense server: D:\Entwicklung\working\molog\sample\temp.cpp
Checking for syntax errors: D:\Entwicklung\working\molog\src\molog\Logger.hpp
Checking for syntax errors: D:\Entwicklung\working\molog\src\molog\Logger.hpp
Checking for syntax errors: D:\Entwicklung\working\molog\src\molog\Log.hpp
Checking for syntax errors: D:\Entwicklung\working\molog\src\molog\Log.hpp
Checking for syntax errors: D:\Entwicklung\working\molog\src\molog\Log.hpp
Checking for syntax errors: D:\Entwicklung\working\molog\src\molog\Log.hpp
Checking for syntax errors: D:\Entwicklung\working\molog\src\molog\Log.hpp
Checking for syntax errors: D:\Entwicklung\working\molog\src\molog\Log.hpp
Checking for syntax errors: D:\Entwicklung\working\molog\src\molog\Log.hpp
Checking for syntax errors: D:\Entwicklung\working\molog\src\molog\Log.hpp
IntelliSense Engine = Default.
Enhanced Colorization is enabled.
Error squiggles are enabled if all header dependencies are resolved.
Autocomplete is enabled.
IntelliSense Engine = Default.
Enhanced Colorization is enabled.
Error squiggles are enabled if all header dependencies are resolved.
Autocomplete is enabled.
IntelliSense Engine = Default.
Enhanced Colorization is enabled.
Error squiggles are enabled if all header dependencies are resolved.
Autocomplete is enabled.
IntelliSense Engine = Default.
Enhanced Colorization is enabled.
Error squiggles are enabled if all header dependencies are resolved.
Autocomplete is enabled.
Checking for syntax errors: D:\Entwicklung\working\molog\sample\temp.cpp
Checking for syntax errors: D:\Entwicklung\working\molog\src\molog\Log.hpp
IntelliSense Engine = Default.
Enhanced Colorization is enabled.
Error squiggles are enabled if all header dependencies are resolved.
Autocomplete is enabled.
Checking for syntax errors: D:\Entwicklung\working\molog\sample\temp.cpp
Checking for syntax errors: D:\Entwicklung\working\molog\sample\temp.cpp
Checking for syntax errors: D:\Entwicklung\working\molog\sample\temp.cpp
...

Screenshots

Riproducete la diagnostica con l’esempio C++20 fornito utilizzando la configurazione MinGW-w64 e CMake Tools indicata. Iniziate dalla gestione di std::source_location::current() in un parametro predefinito da parte del servizio linguistico C++, e verificate che IntelliSense non segnali più alcun errore mentre l’esempio continua a compilare correttamente.