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Locals/Watch window displays std::map<enum, struct> incorrectly

Environment

  • OS and version: Ubuntu 22.04.3 LTS (WSL2)
  • VS Code: 1.87.2
  • C/C++ extension: 1.19.8
  • GDB / LLDB version: 12.1

Bug Summary and Steps to Reproduce

Bug Summary:
When an std::map is instantiated with an enum class as the key and a struct as a value, the map displays "improperly" in the watch or local window, meaning that the key does not render properly. An std::map<int, struct> or std::map<enum, int> displays as expected.

Steps to reproduce:

Minimum reproducible example:

#include <map>

enum class foo {A, B};

struct bar {
    int x = 5;
    int y = 6;
};


int main(int argc, char * argv[]) {
    std::map<foo, bar> m1;
    std::map<foo, int> m2;
    std::map<int, bar> m3;

    m1[foo::A] = bar();
    m1[foo::B] = bar();
    m2[foo::A] = 0;
    m2[foo::B] = 0;
    m3[0] = bar();
    return 0;
}

Compile and check view m1, m2, and m3 in watch or local window.
image

Debugger Configurations

tasks.json:


{
    "tasks": [
        {
            "type": "cppbuild",
            "label": "C/C++: g++ build active file",
            "command": "/usr/bin/g++",
            "args": [
                "-fdiagnostics-color=always",
                "-g",
                "${file}",
                "-o",
                "${fileDirname}/${fileBasenameNoExtension}"
            ],
            "options": {
                "cwd": "${fileDirname}"
            },
            "problemMatcher": [
                "$gcc"
            ],
            "group": {
                "kind": "build",
                "isDefault": true
            },
            "detail": "compiler: /usr/bin/g++"
        }
    ]
}

launch.json

{
"version": "2.0.0",
"configurations": [
        {
            "name": "(gdb) Launch",
            "type": "cppdbg",
            "request": "launch",
            "program": "${workspaceFolder}/test",
            "args": [],
            "stopAtEntry": false,
            "cwd": "${workspaceFolder}",
            "environment": [],
            "externalConsole": false,
            "MIMode": "gdb",
            "setupCommands": [
                {
                    "description": "Enable pretty-printing for gdb",
                    "text": "-enable-pretty-printing",
                    "ignoreFailures": true
                },
                {
                    "description": "Set Disassembly Flavor to Intel",
                    "text": "-gdb-set disassembly-flavor intel",
                    "ignoreFailures": true
                }
            ]
        }
}

Debugger Logs

Other Extensions

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Additional Information

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