Just to say it's a huge time saver for programmers. It allows to test optimisations and new features much faster. So it would be really helpful to add it at least as an experimental feature to master.
Together with D2254, it allows to build the simplest kernels in 2sec and the most advanced one in 11seconds compared to 20 to 38sec on master.
Could we just do the math and alloc the memory we need? just allocating 10k on the stack and hoping it's enough feels sloppy and a buffer overflow exploit waiting to happen.