Hi - I get the following warning when compiling printf.c (master [8b831c1]):

printf.c:899:47: warning: 'abs_exp10_covered_by_powers_table' may be used uninitialized in this function [-Wmaybe-uninitialized]

I've not done any in-depth analysis of how print_exponential_number works, so I'm not sure if this really matters. Still, it would be nice if abs_exp10_covered_by_powers_table could be initialised with a default value to get rid of this warning.