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General / Problem with debugging in VSCode+gdb

« on: July 31, 2023, 09:35:56 pm »

Hey everyone,
I used the CMake Tools VSCode extension to set up a debugging environment (I hardly did anything) using the gcc kit. It was all going fine until I tried to inspect the contents of a vector and it shows empty even though I know (almost for certain) it isn't. Here's the relevant code:

void squares(std::vector<sf::RectangleShape> &squares_vec)
{
    for (size_t i = 0; i < 81; i++)
    {
        sf::Color grey(140,140,140);
        sf::Color gainsboro_grey(207,208,207);
        sf::RectangleShape square(sf::Vector2f(70,70));
        square.setFillColor(gainsboro_grey);
        square.setOutlineColor(grey);
        square.setOutlineThickness(3);
        squares_vec.push_back(square);
    }
    std::cout<<"Number of squares in vec: "<<squares_vec.size()<<std::endl;
    place_squares(squares_vec);        
}
 

The std::cout prints 81 squares in vec (as intended) so everything in that function seems okay  but I need the debugger to be working well to debug the subsequent function ( place_squares() ) which is not working okay. What I mean by the debugger is telling me the vector is empty is that is what it shows in the VSCode debugging GUI on the left panel of VSCode, which I am using. Below are some more documents you may find useful.

CMakeLists.txt:

#This CMakeLists.txt is a frankenstein mixture between what CMake Tools auto generates and some changes I made based on
#this Example CMake script (so it would link the libraries): https://en.sfml-dev.org/forums/index.php?topic=24070.0

cmake_minimum_required(VERSION 3.0.0)
project(sfml-app VERSION 0.1.0 LANGUAGES C CXX)

include(CTest)
enable_testing()

find_package(SFML 2.5 COMPONENTS graphics audio REQUIRED)
add_executable(sfml-app main.cpp)
target_link_libraries(sfml-app sfml-graphics sfml-audio)

set(CPACK_PROJECT_NAME ${PROJECT_NAME})
set(CPACK_PROJECT_VERSION ${PROJECT_VERSION})
set(SFML_DIR "<sfml root prefix>/lib/cmake/SFML")
include(CPack)

cmake_minimum_required(VERSION 3.1)

project(SFMLTest)

## If you want to link SFML statically
# set(SFML_STATIC_LIBRARIES TRUE)

## In most cases better set in the CMake cache

compile_commands.json:

[
{
  "directory": "/home/dudefellaman/Desktop/SFML Code/Sudoku/build",
  "command": "/usr/bin/g++   -g -o CMakeFiles/sfml-app.dir/main.cpp.o -c \"/home/dudefellaman/Desktop/SFML Code/Sudoku/main.cpp\"",
  "file": "/home/dudefellaman/Desktop/SFML Code/Sudoku/main.cpp"
}
]

If you need anymore info, ask away!