Fuzz target for `parseXML` with 2 crashing testcases about dxml HOT 7 CLOSED

// RUN: ~/ldc/ldc2-1.8.0-osx-x86_64/bin/ldc2 -g -fsanitize=fuzzer fuzz_dxml.d dxml/*.d

import std.typecons : Flag, Yes;


mixin template DefineTestOneInput(alias FuzzTarget, Flag!"initializeDRuntime" initializeDRuntime = Yes.initializeDRuntime)
    if (is(typeof(&FuzzTarget) == int function(in ubyte[])))
{
    static if (initializeDRuntime)
    {
        // Do druntime initialization and de-initialization through module ctor/dtor.
        // Choose a low priority = 10, to hopefully init before (de-init after) standard D module ctors (dtors).
        __gshared static bool runtimeInitialized = false;
        pragma(crt_constructor, 10)
        void initDRuntime()
        {
            import core.runtime : rt_init;
            rt_init();
            runtimeInitialized = true;
        }

        pragma(crt_destructor, 10)
        void terminateDRuntime()
        {
            import core.runtime : rt_term;
            if (runtimeInitialized)
                runtimeInitialized = !rt_term();
        }
    }

    // libFuzzer's user entry point
    pragma(mangle, "LLVMFuzzerTestOneInput") // Work around https://issues.dlang.org/show_bug.cgi?id=12575
    extern (C) int LLVMFuzzerTestOneInput(const(ubyte*) data, size_t size)
    {
        try
        {
            // Call the user's function
            return FuzzTarget(data[0 .. size]);
        }
        catch (Throwable t)
        {
            _d_print_throwable(t);
        }
        // We only reach here when an exception was caught.
        assert(0);
    }

    pragma(mangle, "_d_print_throwable") // Work around https://issues.dlang.org/show_bug.cgi?id=12575
    extern (C) void _d_print_throwable(Throwable t);
}

mixin DefineTestOneInput!fuzzMe;

int fuzzMe(in ubyte[] data)
{
    import dxml.parser;
    try
    {
        int sum;
        auto range = parseXML(cast(char[])data);
        foreach (elem; range) {
            // Do something unpredictable to actually test the parser
            sum += cast(int) elem.type;
        }
        return sum > 1;
    }
    catch (XMLParsingException)
    {
        return 0;
    }
}