https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105747
--- Comment #5 from David Binderman <dcb314 at hotmail dot com> --- Created attachment 53097 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53097&action=edit C source code This source code file takes something over ten minutes, with compiler flags -fno-var-tracking -g -Wall -O3 -march=native on a 32 bit ARM machine, like raspberry PI 3.