Find the following code in file 'mtype.d' at line 4561:
bool overflow = false;
if (mulu(tbn.size(loc), d2, overflow) >=
0x1000000 || overflow) // put a 'reasonable' limit on it
goto Loverflow;
And change it to:
bool overflow = false;
mulu(tbn.size(loc), d2, overflow);
if (overflow)
goto Loverflow;
I would make a PR if I had the time (anyone?)...
