Skip to content

Locals/Watch window displays std::map<enum, struct> incorrectly #12102

@william-simon

Description

@william-simon

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

No response

Additional Information

No response

Metadata

Metadata

Assignees

No one assigned

    Labels

    debuggerhelp wantedCan be fixed in the public (open source) repo.

    Type

    No type

    Projects

    No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions