Bug 31646: Update abicheck to require GLIBCXX_3.4.25

/*

 * Bug 25485: Browser/TorBrowser/Tor/libstdc++.so.6: version `CXXABI_1.3.11' not found

 * This program is borrowed from

 * https://en.cppreference.com/w/cpp/error/uncaught_exception and is useful in

 * determining the latest C++ ABI. Specifically this program requires

 * `GLIBCXX_3.4.22` which we use to compare the version of the installed

 * libstdc++.so.6 and the bundled version. If the program executes

 * successfully, that means we should use the system version of libstdc++.so.6

 * and if not, that means we should use the bundled version.

 * Bug 31646: Update abicheck to require newer libstdc++.so.6

 * This program is useful in determining if the libstdc++.so.6 installed

 * on the system is recent enough. Specifically this program requires

 * `GLIBCXX_3.4.25` which should be provided by libstdc++.so.6 from

 * gcc >= 8.0.0. If the program executes successfully, that means we

 * should use the system version of libstdc++.so.6 and if not, that means

 * we should use the bundled version.

 *

 * We use std::random_device::entropy() in order to require GLIBCXX_3.4.25:

 * https://github.com/gcc-mirror/gcc/blob/gcc-8_3_0-release/libstdc%2B%2B-v3/config/abi/pre/gnu.ver#L1978

 */

#include <iostream>

#include <exception>

#include <stdexcept>

struct Foo {

    int count = std::uncaught_exceptions();

    ~Foo() {

        std::cout << (count == std::uncaught_exceptions()

            ? "~Foo() called normally\n"

            : "~Foo() called during stack unwinding\n");

    }

};

#include <random>

int main()

{

    Foo f;

    try {

        Foo f;

        std::cout << "Exception thrown\n";

        throw std::runtime_error("test exception");

    } catch (const std::exception& e) {

        std::cout << "Exception caught: " << e.what() << '\n';

    }

    std::random_device rd;

    std::cout << "entropy: " << rd.entropy() << std::endl;

    return 0;

}

# vim: filetype=yaml sw=2

filename: '[% project %]-[% c("version") %]-[% c("var/build_id") %].tar.gz'

# Note: When updating the gcc version, if this includes a libstdc++

# ABI change we should also update projects/firefox/abicheck.cc to

# require the new version.

version: 8.3.0

var:

  container: