hover over static constexpr variables does not show evaluation result

[diablodale]

Environment

• OS and Version: Microsoft Windows [Version 10.0.22631.3447]
• VS Code Version: 1.89.0 (system setup)
• C/C++ Extension Version: 1.19.9
• If using SSH remote, specify OS of remote machine:

Bug Summary and Steps to Reproduce

Summary

Some combinations of static/not for constexpr formula are not evaluated by intellisense hover. Statements as static constexpr... sometimes do not evaluate.

Setup

• as above
• VS 2022 Community 17.9.6

Repro

1. Create vscode folder, cmakelists.txt, to configure and compile below c++17 code
2. Over over the 8 variable names to see which are evaluated and show their result

int main() {

    // hover over both variable names, left side of operator=() ...

    // shows 5 and 10
    constexpr int case1a = 5;
    constexpr int case1b = case1a * 2;

    // shows 5 and 10
    static constexpr int case2a = 5;
    constexpr int case2b = case2a * 2;

    // shows only 5
    constexpr int case3a = 5;
    static constexpr int case3b = case3a * 2;

    // shows only 5
    static constexpr int case4a = 5;
    static constexpr int case4b = case4a * 2;

    return 0;
}

Result

Only 6 of 8 variables have their results evaluated on hover. Two of the static constexpr... fail to show their result.

Expected

All 8 variables show their evaluated result on hover.

Configuration and Logs

No c_cpp_properties.json

-------- Diagnostics - 5/6/2024, 3:25:47 PM
Version: 1.19.9
Current Configuration:
{
    "name": "Win32",
    "includePath": [
        "c:/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/**"
    ],
    "defines": [
        "_DEBUG",
        "UNICODE",
        "_UNICODE"
    ],
    "windowsSdkVersion": "10.0.22621.0",
    "compilerPath": "cl.exe",
    "cStandard": "c17",
    "cppStandard": "c++17",
    "intelliSenseMode": "windows-msvc-x64",
    "compilerPathInCppPropertiesJson": "cl.exe",
    "intelliSenseModeIsExplicit": false,
    "cStandardIsExplicit": false,
    "cppStandardIsExplicit": false,
    "mergeConfigurations": false,
    "compilerPathIsExplicit": false,
    "configurationProvider": "ms-vscode.cmake-tools",
    "browse": {
        "path": [
            "c:/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/**",
            "${workspaceFolder}"
        ],
        "limitSymbolsToIncludedHeaders": true
    }
}
Custom browse configuration: 
{
    "browsePath": [
        "c:/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src",
        "c:/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/include"
    ],
    "compilerPath": "c:/program files/microsoft visual studio/2022/community/vc/tools/msvc/14.39.33519/bin/hostx64/x64/cl.exe",
    "compilerArgs": [],
    "compilerFragments": [
        "/DWIN32 /D_WINDOWS /EHsc /Ob0 /Od /RTC1 -std:c++17 -MDd -Zi"
    ]
}
cpptools version (native): 1.19.9.0
Translation Unit Mappings:
[ C:\repos-nobackup\cpptools-bug-hover-constexpr\my-cpp-project\include\other_classes.h - source TU]:
[ C:\repos-nobackup\cpptools-bug-hover-constexpr\my-cpp-project\src\main.cpp - source TU]:
Translation Unit Configurations:
[ C:\repos-nobackup\cpptools-bug-hover-constexpr\my-cpp-project\include\other_classes.h ]:
    Process ID: 11512
    Memory Usage: 49 MB
    Compiler Path: C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.39.33519\bin\Hostx64\x64\cl.exe
    Includes:
        C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.39.33519\include
        C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.39.33519\atlmfc\include
        C:\Program Files (x86)\Windows Kits\10\Include\10.0.22621.0\um
        C:\Program Files (x86)\Windows Kits\10\Include\10.0.22621.0\ucrt
        C:\Program Files (x86)\Windows Kits\10\Include\10.0.22621.0\shared
        C:\Program Files (x86)\Windows Kits\10\Include\10.0.22621.0\winrt
        C:\Program Files (x86)\Windows Kits\10\Include\10.0.22621.0\cppwinrt
    Defines:
        WIN32
        _WINDOWS
    Standard Version: ms_c++17
    IntelliSense Mode: windows-msvc-x64
[ C:\repos-nobackup\cpptools-bug-hover-constexpr\my-cpp-project\src\main.cpp ]:
    Process ID: 31836
    Memory Usage: 54 MB
    Compiler Path: C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.39.33519\bin\Hostx64\x64\cl.exe
    Includes:
        C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.39.33519\include
        C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.39.33519\atlmfc\include
        C:\Program Files (x86)\Windows Kits\10\Include\10.0.22621.0\um
        C:\Program Files (x86)\Windows Kits\10\Include\10.0.22621.0\ucrt
        C:\Program Files (x86)\Windows Kits\10\Include\10.0.22621.0\shared
        C:\Program Files (x86)\Windows Kits\10\Include\10.0.22621.0\winrt
        C:\Program Files (x86)\Windows Kits\10\Include\10.0.22621.0\cppwinrt
    Defines:
        WIN32
        _WINDOWS
    Standard Version: ms_c++17
    IntelliSense Mode: windows-msvc-x64
Total Memory Usage: 103 MB

------- Workspace parsing diagnostics -------
Number of files discovered (not excluded): 5032

loggingLevel: Debug
loggingLevel has changed to: Debug
LSP: (received) cpptools/fileCreated: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/.vscode
LSP: (invoked) cpptools/didChangeCppProperties (id: 1206)
LSP: Sending response (id: 1206)
LSP: (invoked) cpptools/fileCreated: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/.vscode
LSP: (received) cpptools/fileCreated: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/.vscode/settings.json
LSP: (invoked) cpptools/fileCreated: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/.vscode/settings.json
LSP: (received) cpptools/didChangeVisibleTextEditors
LSP: (invoked) cpptools/didChangeVisibleTextEditors
LSP: (received) cpptools/didChangeVisibleTextEditors
LSP: (invoked) cpptools/didChangeVisibleTextEditors
LSP: (received) cpptools/didChangeVisibleTextEditors
LSP: (invoked) cpptools/didChangeVisibleTextEditors
LSP: (received) cpptools/didChangeVisibleTextEditors
LSP: (invoked) cpptools/didChangeVisibleTextEditors
LSP: (received) cpptools/didChangeVisibleTextEditors
LSP: (invoked) cpptools/didChangeVisibleTextEditors
Intellisense update pending for: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp
LSP: (received) cpptools/didChangeActiveEditor: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp
LSP: (received) cpptools/getCodeActions: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp (id: 1207)
LSP: (invoked) cpptools/didChangeActiveEditor: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp
LSP: (received) cpptools/didChangeTextEditorSelection
LSP: (invoked) cpptools/getCodeActions: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp (id: 1207)
LSP: Sending response (id: 1207)
LSP: (invoked) cpptools/didChangeTextEditorSelection
IntelliSense update scheduled and TU acquisition started for: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp
Update IntelliSense time (sec): 0.002
LSP: (received) cpptools/getFoldingRanges: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp (id: 1208)
LSP: (invoked) cpptools/getFoldingRanges: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp (id: 1208)
LSP: Sending response (id: 1208)
LSP: (received) cpptools/getCodeActions: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp (id: 1209)
LSP: (invoked) cpptools/getCodeActions: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp (id: 1209)
LSP: Sending response (id: 1209)
LSP: (received) cpptools/getDocumentSymbols: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp (id: 1210)
LSP: (invoked) cpptools/getDocumentSymbols: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp (id: 1210)
LSP: Sending response (id: 1210)
LSP: (received) cpptools/didChangeVisibleTextEditors
LSP: (invoked) cpptools/didChangeVisibleTextEditors
LSP: (received) cpptools/didChangeActiveEditor: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp
LSP: (invoked) cpptools/didChangeActiveEditor: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp
LSP: (received) cpptools/didChangeVisibleTextEditors
LSP: (invoked) cpptools/didChangeVisibleTextEditors
LSP: (received) textDocument/hover: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp (id: 1211)
LSP: (invoked) textDocument/hover: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp (id: 1211)
LSP: Sending response (id: 1211)
LSP: $/cancelRequest (<unknown/completed>, id: 1211)
LSP: (received) textDocument/hover: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp (id: 1212)
LSP: (invoked) textDocument/hover: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp (id: 1212)
LSP: Sending response (id: 1212)
LSP: (received) textDocument/hover: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp (id: 1213)
LSP: (invoked) textDocument/hover: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp (id: 1213)
LSP: Sending response (id: 1213)
LSP: (received) textDocument/hover: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp (id: 1214)
LSP: (invoked) textDocument/hover: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp (id: 1214)
LSP: Sending response (id: 1214)
LSP: (received) textDocument/hover: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp (id: 1215)
LSP: (invoked) textDocument/hover: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp (id: 1215)
LSP: Sending response (id: 1215)
LSP: (received) textDocument/hover: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp (id: 1216)
LSP: (invoked) textDocument/hover: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp (id: 1216)
LSP: Sending response (id: 1216)
LSP: (received) textDocument/hover: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp (id: 1217)
LSP: (invoked) textDocument/hover: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp (id: 1217)
LSP: Sending response (id: 1217)
LSP: (received) textDocument/hover: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp (id: 1218)
LSP: (invoked) textDocument/hover: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp (id: 1218)
LSP: Sending response (id: 1218)
LSP: (received) textDocument/hover: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp (id: 1219)
LSP: (invoked) textDocument/hover: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp (id: 1219)
LSP: Sending response (id: 1219)
LSP: (received) textDocument/hover: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp (id: 1220)
LSP: (invoked) textDocument/hover: file:///c%3A/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp (id: 1220)
LSP: Sending response (id: 1220)

### Other Extensions

_No response_

### Additional context

_No response_

[diablodale]

Also reproduces with same OP except...

• Open VSCode to WSL Ubuntu 20.04 LTS
• Use kit gcc-9

-------- Diagnostics - 5/6/2024, 3:42:18 PM
Version: 1.19.9
Current Configuration:
{
    "name": "Linux",
    "includePath": [
        "/mnt/c/repos-nobackup/cpptools-bug-hover-constexpr/**"
    ],
    "defines": [],
    "compilerPath": "/usr/bin/gcc",
    "cStandard": "c17",
    "cppStandard": "gnu++14",
    "intelliSenseMode": "linux-gcc-x64",
    "compilerPathInCppPropertiesJson": "/usr/bin/gcc",
    "intelliSenseModeIsExplicit": false,
    "cStandardIsExplicit": false,
    "cppStandardIsExplicit": false,
    "mergeConfigurations": false,
    "compilerPathIsExplicit": false,
    "browse": {
        "path": [
            "/mnt/c/repos-nobackup/cpptools-bug-hover-constexpr/**",
            "${workspaceFolder}"
        ],
        "limitSymbolsToIncludedHeaders": true
    }
}
cpptools version (native): 1.19.9.0
Translation Unit Mappings:
[ /mnt/c/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp - source TU]:
Translation Unit Configurations:
[ /mnt/c/repos-nobackup/cpptools-bug-hover-constexpr/my-cpp-project/src/main.cpp ]:
    Process ID: 57904
    Memory Usage: 11 MB
    Compiler Path: /usr/bin/gcc
    Includes:
        /usr/include/c++/9
        /usr/include/x86_64-linux-gnu/c++/9
        /usr/include/c++/9/backward
        /usr/lib/gcc/x86_64-linux-gnu/9/include
        /usr/local/include
        /usr/include/x86_64-linux-gnu
        /usr/include
    Standard Version: c++14
    IntelliSense Mode: linux-gcc-x64
    Other Flags:
        --g++
        --gnu_version=90400
Total Memory Usage: 11 MB

------- Workspace parsing diagnostics -------
Number of files discovered (not excluded): 2498

[sean-mcmanus]

@diablodale I've filed a bug on our shared VS implementation at https://developercommunity.visualstudio.com/t/C-IntelliSense-doesnt-show-the-hover/10653170 .

[diablodale]

got it. Does that team also own the code that is used in WSL with GCC? I thought there were separate components provided by the GCC project for hover/parsing.

[sean-mcmanus]

@diablodale Sorry, I missed your earlier comment -- our team/extension owns the IntelliSense code that is used with WSL/gcc (although it is still shared with VS and depends on the EDG parser at the lowest layer).

@diablodale This is fixed with https://github.com/microsoft/vscode-cpptools/releases/tag/v1.22.1 .

[diablodale]

yay. confirmed fix using cpptools v1.22.9 with kits

• msvc 17.11.5 on win x64
• gcc 13.2.0 on linux x64