C++17 path configuration problem in vscode

Question

When I try to use the round() function, while passing a double as the parameter, VSCode shows me this error:

more than one instance of overloaded function "round" matches the argument list:

function "std::round(float __x)" (declared at line 1756 of "C:\msys64\usr\lib\gcc\x86_64-pc-msys\11.3.0\include\c++\cmath")

function "std::round(long double __x)" (declared at line 1760 of "C:\msys64\usr\lib\gcc\x86_64-pc-msys\11.3.0\include\c++\cmath")

argument types are: (double)

I'm using C++17 standard, as the __cplusplus macro expands to 201703L. And according to the information I found, round(double) should exists in this version.

Here's my code:

#include <iostream>
#include <cmath>

int main() {
    std::cout << round(double(0)) << std::endl;
}

Judging from the error message, I suspect that maybe something is wrong with my c_cpp_properties:

{
    "configurations": [
        {
            "name": "Win32",
            "includePath": [
                "${workspaceFolder}/**",
                "C:\\msys64\\usr\\lib\\gcc\\x86_64-pc-msys\\11.3.0\\include\\**",
                "C:\\msys64\\usr\\lib\\gcc\\x86_64-pc-msys\\11.3.0\\include-fixed\\**",
                "C:\\msys64\\usr\\include\\**"
            ],
            "defines": [
                "_DEBUG",
                "UNICODE",
                "_UNICODE"
            ],
            "cStandard": "c17",
            "cppStandard": "gnu++17",
            "intelliSenseMode": "linux-gcc-x64",
            "compilerPath": "C:/msys64/usr/bin/g++.exe"
        }
    ],
    "version": 4
}

Answer 1

I just solve this problem for myself. I changed includePath in c_cpp_properties.json from

"${workspaceFolder}/**",
"C:\\msys64\\usr\\lib\\gcc\\x86_64-pc-msys\\11.3.0\\include\\**",
"C:\\msys64\\usr\\lib\\gcc\\x86_64-pc-msys\\11.3.0\\include-fixed\\**",
"C:\\msys64\\usr\\include\\**"

to

"${workspaceFolder}/**",
"C:/msys64/usr/lib/gcc/x86_64-pc-msys/11.3.0/include/c++",
"C:/msys64/usr/lib/gcc/x86_64-pc-msys/11.3.0/include/c++/x86_64-pc-msys",
"C:/msys64/usr/lib/gcc/x86_64-pc-msys/11.3.0/include/c++/backward",
"C:/msys64/usr/lib/gcc/x86_64-pc-msys/11.3.0/include",
"C:/msys64/usr/lib/gcc/x86_64-pc-msys/11.3.0/include-fixed",
"C:/msys64/usr/include",
"C:/msys64/usr/lib/gcc/x86_64-pc-msys/11.3.0/../../../../lib/../include/w32api"

. I get this list from typing gcc -v -E -x c++ - in the terminal.

Edit: I found an answered question regarding the meaning of the command: What are the GCC default include directories?