mruby/mruby — pull request #2563 by cremno (2014-08-25 22:36:14+00:00)
Title: printf: cast variables to the expected type

%x expects unsigned int and %p expects void *

GCC emits a diagnostic about %p/void* in pedantic mode:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=26542