Calling run multiple times while filenamesAsTags is set changes behaviour of program.

[itacud95]

Calling run multiple times while filenamesAsTags is set changes behaviour of program.

[itacud95]

Might be because applyFilenamesAsTags is called for each run. If I wrap it in a call_once it seems to fix the issue

// src/catch2/catch_session.cpp:308
if (m_configData.filenamesAsTags) {
    static std::once_flag flag;
    std::call_once(flag, []{
        applyFilenamesAsTags();
    });
}

[itacud95]

So a workaround for this is setting the filenamesAsTags flag to false after the first run.
The code would look something like this

int main() {
    Catch::Session session = Catch::Session();

    // Get a list of tags
    Catch::ConfigData conf;
    conf.filenamesAsTags = true;
    conf.listTests = true;  // Avoid running tests
    session.useConfigData(conf);
    session.run();

    // Run the actual tests, without filenameAsTags
    session.useConfigData(Catch::ConfigData{});
    auto config = session.configData();
    config.testsOrTags = {"[myTag]"};

    for (int i = 0; i < 4; i++) session.run();
}

I am closing the issue with this, since this solves my problem.