Comment 2 for bug 1749393

This appears to be a problem in all PIE-compiled executables that use sbrk in qemu-user due to the way that position-independent code gets mmapped into adjacent ranges meaning there is no room for expansion. I've hacked my version of QEMU to force the program binary to mmap in a different range allowing for the region to be resized which fixes this issue. I don't know the most appropriate way to determine what range to use in generate though.