Printing characters for file.peek() in watch window - debug

[jenmueller]

Typing file.peek() in the watch window under debug mode prints this message while stepping in my code: file.peek(): Couldn't find method std::ifstream::peek.

I have added a .natvis file but I am still unable to see what the peek method is analyzing in the watch window.

I also get the error Unable to step out. Operation failed with error code 0x80004004 while trying to step out (SHIFT+F11) in my code which is probably due to gdb according to this post: #215. EDIT: I corrected the link.

• OS : Ubuntu 16.04.2 LTS
• VSCode : Version 1.14.2
• gdb : GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.04) 7.11.1
• vscode.cpptools-0.12.2

Any ideas on how to have file.peek() in the watch window show the strings?

Here is a sample code along with my natvis and json files:
debugFct.cpp:

#include <iostream>
#include <fstream>
using namespace std; // using only on test code

int main(){
    int numChar = 0;
    char numb;
    do {
        ++numChar;
        if (file.peek() == '\n')
            break;
        cout << numb << " ";
    }
    while(file.get(numb));
    return 0;
}

debug.natvis file placed in /usr/share/code/ folder:

<?xml version="1.0" encoding="utf-8"?>  
<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">  
<Type Name="file.peek()">
    <DisplayString>{file.peek(),[1]su}</DisplayString>
</Type>
</AutoVisualizer>

launch.json:

"version": "0.2.0",
"configurations": [
        {
            "name": "(gdb) Launch",
            "type": "cppdbg",
            "request": "launch",
            "program": "${workspaceRoot}/debugFct",
            "args": ["-D_GLIBCXX_DEBUG"],
            "stopAtEntry": false,
            "cwd": "${workspaceRoot}",
            "environment": [],
            "externalConsole": true,
            "MIMode": "gdb",
            "miDebuggerPath": "/usr/bin/gdb",
            "showDisplayString": true,
            "setupCommands": [
                {
                    "description": "Enable pretty-printing for gdb",
                    "text": "-exec -enable-pretty-printing",
                    "ignoreFailures": true
                },
                { 
                    "text": "handle SIGPIPE nostop noprint pass", 
                    "description": "ignore SIGPIPE", 
                    "ignoreFailures": true 
                }
            ]
        }
    ]

settings.json:

"files.associations": {
    "string": "cpp",
    "iostream": "cpp",
    "istream": "cpp",
    "iosfwd": "cpp"
},
"C_Cpp.intelliSenseEngine": "Default",
"code-runner.executorMap":{
    "cpp": "cd $dir && g++ $fileName -std=c++11 -o $fileNameWithoutExt && $dir$fileNameWithoutExt"
},
"editor.minimap.enabled": false,
"vsicons.presets.tsOfficial": true,
"workbench.iconTheme": "vscode-icons"

Thank you

[pieandcakes]

I also get the error Unable to step out. Operation failed with error code 0x80004004 while trying to step out (SHIFT+F11) in my code which is probably due to gdb according to this post

This seems to be because you are attempting to step out on the last frame. in the Debug Console window, you should see the gdb error. The post you referenced doesn't seem to have anything to do with that error.

[jenmueller]

I'm sorry, I made an error while referencing another post : should have been this issue.