[C++] data flow node not found

g++ version: 4.8.2
codeql version: 2.23.6

main.cpp:

#include "stdint.h"
#include <string>

class Test {
public:
    explicit Test(const uint64_t &id) : id_(id) {}
    
private:
    uint64_t id_;
};

int main(int argc, char* argv[]){
    Test test(123456);
    return 0;
}

create database command:

codeql database create testdb --language=cpp --command='g++ main.cpp -std=c++11' -j 0

query:

from DataFlow::Node n
where n.getLocation().getFile().getBaseName() = "main.cpp"
select n

I can find the data flow node "*constructor init of field id_":

and then i add a string member variable str_ like this(line 9):

#include "stdint.h"
#include <string>

class Test {
public:
    explicit Test(const uint64_t &id) : id_(id) {}
    
private:
    std::string str_{};
    uint64_t id_;
};

int main(int argc, char* argv[]){
    Test test(123456);
    return 0;
}

use the same command to create a new database and the same query to analyze, it seems that i can not find the data flow node "*constructor init of field id_" in the new database.

@hello123leo

Hi @hello123leo 👋🏻

I have been able to confirm this behaviour. I'll check with the relevant team to see whether this is a bug or somehow intentional.

@hello123leo

Hi again @hello123leo,

I have checked with the team and they can confirm that this is a bug. They will look at getting this fixed, but we can't currently provide a timeline for when a fix might be ready. We will post an update here when there is one.

@mbg

Thanks @mbg .
Looking forward to a fix.

This will be fixed by #21611

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[C++] data flow node not found #21032

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[C++] data flow node not found #21032

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rusoprivate883-prog commented on Dec 13, 2025

praveenkumarlodhi979-tech commented on Dec 13, 2025

nunubetrappin commented on Dec 13, 2025

mbg commented on Dec 17, 2025

mbg commented on Dec 17, 2025

hello123leo commented on Dec 19, 2025

nunubetrappin commented on Jan 24, 2026

jketema commented on Mar 30, 2026

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